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Batch fix for WPT layout - #44

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Batch fix for WPT layout#44
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@ldm0 ldm0 commented Aug 12, 2026

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Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture contract is clean.

Common ancestor f85f2fa7a14e → HEAD 481d6f18966b; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 184 / 240 0 (0.00%)
Contract fill 76.67% 76.67% 0.00 pp (0.00%)
Sites with rows 38 / 48 38 / 48 0 (0.00%)
Sites meeting row contract 36 / 48 36 / 48 0 (0.00%)
Unexpected empty sites 10 10 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 36; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 2 extracted: 37; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 2
Observed duration 49.44 s 41.97 s -7.47 s (-15.11%)
Estimated CPU 44.77 s 42.12 s -2.66 s (-5.94%)
Peak PSS 248.03 MiB 190.10 MiB -57.93 MiB (-23.35%)
Peak RSS 251.48 MiB 193.38 MiB -58.10 MiB (-23.10%)
Peak threads 26 26 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 37 / 40 37 / 40 0
life 30 / 40 30 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.534, 2.536, 3.036, 4.039, 5.539, 6.039, 7.041, 8.544, 9.545, 11.049, 12.552, 14.053, 15.055, 16.556, 18.06, 19.561, 20.561, 22.064, 23.567, 25.067, 26.069, 27.57, 29.071, 30.573, 31.574, 33.076, 34.576, 36.079, 37.08, 38.584, 39.584, 40.086, 41.588, 42.589, 44.091, 45.593, 47.095, 48.096]
    y-axis "CPU percent" 0 --> 200
    line [111.93, 115.85, 129.82, 107.7, 177.97, 189.93, 143.9, 133.75, 183.78, 107.73, 135.66, 133.76, 73.95, 33.93, 0, 79.99, 57.98, 55.89, 95.89, 113.92, 135.94, 119.87, 59.97, 129.87, 139.8, 7.99, 99.97, 9.99, 9.98, 111.73, 113.89, 99.76, 79.76, 9.99, 35.97, 115.85, 19.99, 137.89]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.534, 2.536, 3.036, 4.039, 5.539, 6.039, 7.041, 8.544, 9.545, 11.049, 12.552, 14.053, 15.055, 16.556, 18.06, 19.561, 20.561, 22.064, 23.567, 25.067, 26.069, 27.57, 29.071, 30.573, 31.574, 33.076, 34.576, 36.079, 37.08, 38.584, 39.584, 40.086, 41.588, 42.589, 44.091, 45.593, 47.095, 48.096, 49.444]
    y-axis "Memory MiB" 0 --> 500
    line [11.77, 94.75, 116.55, 128.87, 142.39, 174.2, 160.73, 198.91, 156.09, 188.73, 170.52, 178.43, 173.47, 158.22, 139.17, 139.99, 154.9, 145.83, 139.38, 151.26, 152.16, 170.96, 198.1, 161.48, 203.98, 188.21, 144.39, 152.1, 150, 146.72, 186.03, 251.48, 249.79, 188.25, 163.18, 164.18, 180.89, 157.2, 169.96, 0]
    line [9.28, 92.03, 113.12, 126.35, 139.5, 171.52, 157.99, 196.37, 153.25, 185.88, 167.77, 175.53, 170.63, 155.38, 136.33, 137.15, 152.06, 142.99, 136.54, 148.42, 149.36, 168.13, 193.87, 158.64, 201.14, 185.48, 141.55, 149.27, 147.17, 144, 183.85, 248.03, 246.01, 185.14, 159.95, 161.04, 176.63, 153.97, 166.73, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.034, 2.035, 2.536, 3.037, 3.537, 4.537, 5.038, 6.039, 7.04, 8.042, 9.544, 10.545, 11.546, 13.048, 14.05, 15.052, 16.555, 17.557, 18.559, 20.062, 21.063, 22.065, 23.567, 24.566, 25.567, 27.068, 28.07, 29.07, 30.572, 31.573, 32.574, 34.076, 35.077, 36.079, 37.58, 38.581, 39.582, 41.083]
    y-axis "CPU percent" 0 --> 500
    line [59.87, 123.87, 141.81, 133.78, 110, 171.84, 249.46, 155.95, 141.85, 113.75, 145.79, 77.82, 97.93, 115.93, 25.94, 97.87, 63.85, 41.92, 9.98, 51.96, 113.73, 107.94, 121.86, 122.04, 113.88, 125.81, 21.98, 45.96, 103.95, 23.98, 101.89, 117.79, 4, 49.98, 115.97, 197.83, 19.98, 119.9]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.033, 1.034, 2.035, 2.536, 3.037, 3.537, 4.537, 5.038, 6.039, 7.04, 8.042, 9.544, 10.545, 11.546, 13.048, 14.05, 15.052, 16.555, 17.557, 18.559, 20.062, 21.063, 22.065, 23.567, 24.566, 25.567, 27.068, 28.07, 29.07, 30.572, 31.573, 32.574, 34.076, 35.077, 36.079, 37.58, 38.581, 39.582, 41.083, 41.975]
    y-axis "Memory MiB" 0 --> 500
    line [11.82, 90.84, 109.63, 128.77, 130.74, 132.57, 161.25, 175.99, 188.57, 163.06, 177.79, 170.17, 170.68, 161.46, 161.51, 154.64, 144.63, 146.28, 141.93, 138.77, 150.02, 156.7, 184.31, 193.38, 167.05, 161.13, 175.48, 145.64, 144.34, 149.06, 150.16, 186.33, 178.3, 169.91, 165.41, 183.6, 168.84, 157.19, 176.31, 0]
    line [8.92, 87.61, 106.55, 125.54, 127.57, 127.15, 158.09, 172.71, 185.56, 159.78, 174.74, 166.92, 167.44, 158.28, 158.13, 151.36, 141.69, 143, 139.01, 135.49, 146.79, 153.72, 181.05, 190.1, 163.77, 157.86, 172.24, 142.4, 141.06, 145.78, 147.45, 183.4, 174.72, 166.63, 161.32, 180.32, 165.56, 153.94, 173.24, 0]
Loading

Deterministic fixture · required contract

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.90 s 19.89 s -0.00 s (-0.02%)
Estimated CPU 0.41 s 0.42 s +0.01 s (+2.43%)
Peak PSS 58.55 MiB 58.55 MiB +0.00 MiB (+0.01%)
Peak RSS 61.04 MiB 61.14 MiB +0.11 MiB (+0.17%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

The public-web A/B is informational. The exact HEAD fixture contract runs as a separate required CI check; timing and public-site content deltas remain non-blocking.

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Spider Bench A/B

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 30594c4fdea2 → HEAD 07c07c39e9ab; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 184 / 240 0 (0.00%)
Contract fill 76.67% 76.67% 0.00 pp (0.00%)
Sites with rows 38 / 48 38 / 48 0 (0.00%)
Sites meeting row contract 36 / 48 36 / 48 0 (0.00%)
Unexpected empty sites 10 10 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 36; HTTP error + rows: 2; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 46.88 s 46.79 s -0.09 s (-0.19%)
Estimated CPU 37.33 s 36.76 s -0.57 s (-1.52%)
Peak PSS 480.26 MiB 445.61 MiB -34.66 MiB (-7.22%)
Peak RSS 478.43 MiB 447.65 MiB -30.78 MiB (-6.43%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 32 / 40 32 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.537, 2.539, 4.041, 5.042, 6.544, 7.545, 8.046, 9.047, 10.55, 12.051, 13.052, 14.553, 15.554, 17.055, 17.555, 18.557, 19.559, 21.063, 22.064, 23.565, 25.067, 26.067, 27.57, 28.571, 29.572, 30.072, 31.574, 32.574, 34.077, 35.58, 36.58, 38.081, 39.083, 40.585, 42.086, 43.087, 44.589, 45.59]
    y-axis "CPU percent" 0 --> 200
    line [61.9, 117.79, 149.95, 135.93, 149.79, 159.67, 135.83, 81.89, 139.84, 89.87, 65.98, 24.01, 7.98, 2, 0, 0, 0, 49.86, 55.91, 155.77, 101.91, 129.94, 109.96, 99.89, 119.85, 137.95, 99.86, 116.03, 89.82, 37.94, 94.01, 11.99, 13.99, 117.84, 13.97, 66.01, 143.78, 117.82]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.537, 2.539, 4.041, 5.042, 6.544, 7.545, 8.046, 9.047, 10.55, 12.051, 13.052, 14.553, 15.554, 17.055, 17.555, 18.557, 19.559, 21.063, 22.064, 23.565, 25.067, 26.067, 27.57, 28.571, 29.572, 30.072, 31.574, 32.574, 34.077, 35.58, 36.58, 38.081, 39.083, 40.585, 42.086, 43.087, 44.589, 45.59, 46.885]
    y-axis "Memory MiB" 0 --> 1000
    line [23.71, 137.12, 160.59, 202.22, 253.64, 222.65, 252.05, 252.63, 240.78, 241.48, 225.56, 211.12, 195.28, 194.21, 191.29, 191.2, 191.14, 191.14, 216.49, 229.63, 236.57, 273.35, 312.89, 324.2, 369.52, 478.43, 342.21, 211.37, 261.68, 245.5, 237.3, 205.92, 204.48, 212.1, 257.13, 235.24, 244.58, 217.82, 242.09, 0]
    line [21.95, 135.02, 158.55, 200.13, 254.73, 220.49, 249.89, 250.48, 238.62, 239.31, 223.4, 208.96, 193.12, 192.04, 189.13, 189.04, 188.98, 188.98, 214.33, 227.47, 234.41, 271.24, 310.53, 322.04, 367.47, 480.26, 334.54, 209.22, 259.52, 243.34, 235.16, 203.76, 202.32, 209.94, 254.97, 233.08, 242.42, 215.66, 239.93, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.035, 1.536, 2.538, 4.04, 5.042, 6.542, 7.544, 9.046, 10.047, 11.551, 12.552, 14.055, 15.055, 16.555, 18.058, 19.059, 20.562, 21.563, 23.066, 24.067, 25.568, 26.57, 28.072, 28.572, 29.072, 30.574, 32.074, 33.077, 34.577, 35.577, 37.08, 38.082, 39.584, 40.584, 42.088, 43.089, 44.591, 45.592]
    y-axis "CPU percent" 0 --> 200
    line [29.96, 0, 9.98, 3.99, 53.92, 97.93, 141.94, 133.74, 111.83, 121.73, 83.83, 123.85, 62.02, 84.02, 107.79, 63.89, 107.91, 65.93, 123.79, 99.97, 131.89, 103.92, 99.84, 148.01, 114.05, 89.83, 141.93, 127.66, 14, 77.98, 5.98, 47.86, 39.95, 34.01, 57.91, 35.96, 7.99, 97.88]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.035, 1.536, 2.538, 4.04, 5.042, 6.542, 7.544, 9.046, 10.047, 11.551, 12.552, 14.055, 15.055, 16.555, 18.058, 19.059, 20.562, 21.563, 23.066, 24.067, 25.568, 26.57, 28.072, 28.572, 29.072, 30.574, 32.074, 33.077, 34.577, 35.577, 37.08, 38.082, 39.584, 40.584, 42.088, 43.089, 44.591, 45.592, 46.794]
    y-axis "Memory MiB" 0 --> 500
    line [23.73, 114.61, 114.61, 128.88, 122.93, 135.28, 189.28, 220.14, 248.61, 250.79, 243.72, 218.05, 243, 225.04, 224.63, 220.6, 212.95, 240.43, 212.16, 233.46, 315.38, 328.52, 330.73, 414.48, 447.65, 391.48, 239.2, 239.82, 249.21, 236.53, 241.53, 194.03, 207.57, 206.55, 208.05, 214.2, 205.35, 198.36, 228.78, 0]
    line [21.99, 112.55, 112.55, 126.82, 120.88, 132.85, 187.23, 218.09, 246.56, 250.23, 241.67, 216, 240.97, 222.98, 222.57, 218.54, 212.9, 238.37, 210.12, 231.51, 313.22, 326.48, 328.69, 412.42, 445.61, 388.29, 237.14, 237.76, 247.15, 234.47, 239.49, 191.97, 205.51, 204.5, 205.99, 212.14, 203.65, 196.31, 226.77, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.91 s 19.92 s +0.01 s (+0.04%)
Estimated CPU 0.45 s 0.42 s -0.03 s (-6.43%)
Peak PSS 86.75 MiB 87.75 MiB +1.01 MiB (+1.16%)
Peak RSS 88.77 MiB 89.80 MiB +1.03 MiB (+1.16%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

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Spider Bench A/B

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 30594c4fdea2 → HEAD 41e7c61ab957; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 184 / 240 0 (0.00%)
Contract fill 76.67% 76.67% 0.00 pp (0.00%)
Sites with rows 38 / 48 38 / 48 0 (0.00%)
Sites meeting row contract 36 / 48 36 / 48 0 (0.00%)
Unexpected empty sites 10 10 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 36; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 2
Observed duration 37.63 s 52.43 s +14.80 s (+39.32%)
Estimated CPU 33.20 s 43.85 s +10.65 s (+32.09%)
Peak PSS 431.33 MiB 489.00 MiB +57.67 MiB (+13.37%)
Peak RSS 432.99 MiB 484.59 MiB +51.60 MiB (+11.92%)
Peak threads 26 27 +1 (+3.85%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 32 / 40 32 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.038, 3.039, 4.039, 5.039, 5.539, 6.04, 6.541, 7.042, 7.543, 8.544, 9.545, 10.546, 11.548, 12.548, 13.55, 15.052, 16.053, 17.055, 18.055, 19.057, 20.058, 21.06, 22.061, 23.063, 24.566, 25.567, 26.568, 27.569, 28.57, 29.572, 30.574, 31.576, 32.576, 34.078, 35.079, 36.08, 37.08]
    y-axis "CPU percent" 0 --> 200
    line [55.93, 111.86, 95.95, 163.97, 142.03, 138.03, 93.84, 149.82, 121.76, 97.81, 97.95, 133.83, 49.93, 53.93, 100.04, 57.83, 127.65, 71.91, 131.82, 100.01, 115.69, 101.93, 137.82, 79.91, 133.82, 53.91, 13.98, 77.94, 5.99, 2, 101.68, 115.65, 127.7, 98.05, 9.99, 129.87, 79.91, 130.04]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.038, 3.039, 4.039, 5.039, 5.539, 6.04, 6.541, 7.042, 7.543, 8.544, 9.545, 10.546, 11.548, 12.548, 13.55, 15.052, 16.053, 17.055, 18.055, 19.057, 20.058, 21.06, 22.061, 23.063, 24.566, 25.567, 26.568, 27.569, 28.57, 29.572, 30.574, 31.576, 32.576, 34.078, 35.079, 36.08, 37.08, 37.633]
    y-axis "Memory MiB" 0 --> 500
    line [23.82, 120.91, 150.21, 181.79, 222.9, 246.14, 238.02, 226.33, 255.79, 249.05, 229.09, 240.86, 230.72, 209.43, 225.37, 184, 188.63, 230.46, 210.58, 224.59, 299.54, 294.27, 363.52, 432.99, 217.2, 242.24, 216.54, 210.18, 200.45, 197.59, 200.57, 260.88, 341.78, 247.59, 250.32, 226.76, 237.57, 224.33, 243.6, 0]
    line [22.36, 119.26, 148.56, 180.15, 223.6, 244.47, 236.39, 224.73, 254.15, 247.39, 227.38, 239.19, 229.04, 207.86, 223.68, 182.31, 186.94, 228.79, 208.9, 222.91, 297.95, 292.59, 361.88, 431.33, 215.51, 240.56, 214.85, 208.77, 198.76, 195.96, 198.88, 259.2, 340.09, 245.9, 248.63, 225.08, 235.88, 222.64, 241.79, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.535, 3.037, 4.539, 5.541, 6.042, 7.543, 9.044, 10.045, 11.547, 13.049, 14.552, 16.053, 17.554, 19.057, 20.558, 22.059, 23.56, 25.062, 25.563, 26.564, 27.565, 29.067, 30.567, 32.07, 33.571, 34.573, 35.073, 36.576, 38.078, 39.58, 41.081, 42.583, 44.086, 45.087, 46.59, 48.091, 49.592, 51.094]
    y-axis "CPU percent" 0 --> 500
    line [91.89, 87.79, 193.73, 201.54, 159.88, 71.93, 11.99, 13.99, 67.91, 5.99, 135.84, 71.92, 127.74, 75.85, 107.88, 69.98, 41.96, 47.98, 0, 63.99, 34, 125.81, 109.97, 123.89, 101.86, 137.74, 127.93, 103.85, 121.73, 17.98, 100.07, 17.96, 127.78, 101.86, 47.91, 11.99, 101.94, 105.75]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.535, 3.037, 4.539, 5.541, 6.042, 7.543, 9.044, 10.045, 11.547, 13.049, 14.552, 16.053, 17.554, 19.057, 20.558, 22.059, 23.56, 25.062, 25.563, 26.564, 27.565, 29.067, 30.567, 32.07, 33.571, 34.573, 35.073, 36.576, 38.078, 39.58, 41.081, 42.583, 44.086, 45.087, 46.59, 48.091, 49.592, 51.094, 52.43]
    y-axis "Memory MiB" 0 --> 1000
    line [23.99, 143.1, 179.97, 257, 328.1, 344.66, 343.54, 341.82, 343.38, 342.48, 342.32, 334.79, 320.45, 322.2, 284.72, 267.81, 273.53, 263.62, 176.5, 172.55, 186.68, 215.82, 228.92, 351.76, 324.55, 377.36, 484.59, 285.47, 225.08, 243.37, 215.43, 220.83, 222, 306.53, 346.87, 254.39, 218.83, 222.36, 226.32, 0]
    line [22.61, 141.48, 178.33, 255.51, 326.58, 343.01, 341.89, 340.19, 341.75, 340.8, 340.74, 333.13, 318.84, 319.45, 283.06, 266.15, 271.73, 261.98, 174.84, 170.89, 185.05, 200.01, 227.48, 347.04, 322.89, 375.72, 489, 283.82, 223.42, 241.71, 213.77, 219.18, 220.34, 305.09, 344.83, 252.73, 217.15, 220.7, 224.66, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 20.02 s 20.03 s +0.01 s (+0.05%)
Estimated CPU 0.47 s 0.47 s 0.00 s (0.00%)
Peak PSS 86.97 MiB 87.79 MiB +0.83 MiB (+0.95%)
Peak RSS 88.55 MiB 90.32 MiB +1.77 MiB (+2.00%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@ldm0
ldm0 force-pushed the layout-wpt-main branch from 41e7c61 to 356a922 Compare August 12, 2026 19:28
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Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD 356a92297fb4; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 179 / 240 -5 (-2.72%)
Contract fill 76.67% 74.58% -2.09 pp (-2.73%)
Sites with rows 38 / 48 37 / 48 -1 (-2.63%)
Sites meeting row contract 36 / 48 35 / 48 -1 (-2.78%)
Unexpected empty sites 10 11 +1 (+10.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 36; HTTP error + rows: 2; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 40.91 s 35.65 s -5.27 s (-12.87%)
Estimated CPU 34.52 s 31.31 s -3.21 s (-9.31%)
Peak PSS 503.98 MiB 513.71 MiB +9.73 MiB (+1.93%)
Peak RSS 505.55 MiB 518.39 MiB +12.84 MiB (+2.54%)
Peak threads 27 26 -1 (-3.70%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 32 / 40 27 / 40 -5
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 2.537, 3.539, 4.039, 4.54, 5.541, 7.043, 8.044, 9.046, 10.546, 11.548, 12.548, 13.549, 15.052, 16.052, 17.053, 18.054, 19.556, 20.558, 21.56, 23.061, 23.562, 24.063, 25.063, 26.065, 27.567, 28.569, 29.57, 31.07, 32.072, 33.072, 34.074, 35.576, 36.578, 37.58, 38.581, 40.082]
    y-axis "CPU percent" 0 --> 200
    line [45.97, 105.93, 107.82, 91.96, 175.91, 127.86, 137.72, 125.81, 143.82, 133.83, 113.84, 37.95, 66.01, 121.64, 5.99, 19.99, 0, 81.92, 111.67, 99.83, 111.7, 97.84, 129.83, 127.78, 39.95, 125.86, 65.85, 15.99, 77.93, 10, 13.97, 107.81, 99.8, 45.94, 2, 63.84, 144.09, 109.84]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.037, 2.537, 3.539, 4.039, 4.54, 5.541, 7.043, 8.044, 9.046, 10.546, 11.548, 12.548, 13.549, 15.052, 16.052, 17.053, 18.054, 19.556, 20.558, 21.56, 23.061, 23.562, 24.063, 25.063, 26.065, 27.567, 28.569, 29.57, 31.07, 32.072, 33.072, 34.074, 35.576, 36.578, 37.58, 38.581, 40.082, 40.913]
    y-axis "Memory MiB" 0 --> 1000
    line [23.22, 119.13, 146.56, 168.93, 183.58, 220.96, 244.75, 238.7, 251.93, 231.74, 239.37, 253.67, 218.96, 192.04, 200.61, 195.25, 194.72, 188.76, 225.41, 220.17, 290.92, 323.59, 406.48, 505.55, 227.89, 218.79, 235.96, 230.89, 219.63, 217.43, 211.66, 223.41, 284.56, 345.02, 248.18, 222.63, 212.16, 219.21, 240.59, 0]
    line [21.77, 117.49, 144.91, 167.28, 181.95, 219.32, 243.1, 237.06, 250.28, 230.1, 237.72, 252.03, 217.31, 189.12, 198.96, 193.6, 193.07, 187.11, 223.76, 218.63, 289.35, 321.94, 404.84, 503.98, 226.26, 216.92, 234.31, 229.25, 217.97, 215.78, 210.01, 221.76, 282.96, 343.37, 246.54, 220.97, 210.51, 217.56, 238.99, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 3.037, 3.539, 4.039, 4.54, 5.041, 6.043, 7.044, 8.046, 9.048, 10.049, 11.051, 12.052, 13.053, 14.055, 15.055, 16.056, 17.057, 18.058, 19.06, 20.062, 21.063, 22.065, 23.067, 24.067, 25.068, 26.07, 27.072, 28.074, 28.575, 29.075, 30.078, 31.079, 32.08, 33.082, 34.083, 35.083]
    y-axis "CPU percent" 0 --> 200
    line [49.93, 109.83, 95.94, 103.71, 171.78, 129.77, 147.75, 105.85, 129.74, 111.82, 79.82, 115.95, 33.96, 85.91, 37.93, 23.93, 87.94, 54.02, 101.86, 102, 107.71, 99.69, 123.8, 133.71, 139.79, 113.86, 19.97, 55.87, 95.86, 25.96, 2, 45.93, 89.76, 11.98, 31.99, 109.83, 61.92, 118.01]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.037, 3.037, 3.539, 4.039, 4.54, 5.041, 6.043, 7.044, 8.046, 9.048, 10.049, 11.051, 12.052, 13.053, 14.055, 15.055, 16.056, 17.057, 18.058, 19.06, 20.062, 21.063, 22.065, 23.067, 24.067, 25.068, 26.07, 27.072, 28.074, 28.575, 29.075, 30.078, 31.079, 32.08, 33.082, 34.083, 35.083, 35.646]
    y-axis "Memory MiB" 0 --> 1000
    line [23.84, 124.33, 148.49, 180.09, 187.29, 199.21, 238.28, 239.83, 216.57, 242.86, 229.33, 212.68, 224.5, 220.37, 226.7, 188.8, 194.44, 228.51, 198.26, 217.45, 284.16, 328.59, 368.38, 518.39, 222.05, 231.17, 231.82, 217.38, 219.32, 214.89, 227.24, 218, 208.79, 209.45, 217.25, 217.1, 216.91, 217.58, 238.71, 0]
    line [22.38, 122.63, 146.79, 178.39, 191.33, 197.51, 236.44, 238.14, 214.98, 241.16, 227.64, 210.98, 222.79, 218.65, 224.99, 187.1, 192.72, 226.79, 196.54, 215.75, 282.47, 326.87, 366.67, 513.71, 220.34, 229.46, 230.11, 215.66, 217.6, 213.18, 225.52, 216.29, 207.08, 207.74, 215.53, 215.38, 215.19, 215.87, 237.03, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 20.15 s 19.98 s -0.17 s (-0.85%)
Estimated CPU 0.52 s 0.44 s -0.08 s (-15.13%)
Peak PSS 86.09 MiB 86.87 MiB +0.78 MiB (+0.91%)
Peak RSS 88.58 MiB 88.72 MiB +0.14 MiB (+0.15%)
Peak threads 20 18 -2 (-10.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

Copy link
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Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD aeee44e9a143; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 179 / 240 -5 (-2.72%)
Contract fill 76.67% 74.58% -2.09 pp (-2.73%)
Sites with rows 38 / 48 37 / 48 -1 (-2.63%)
Sites meeting row contract 36 / 48 35 / 48 -1 (-2.78%)
Unexpected empty sites 10 11 +1 (+10.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 38.09 s 37.82 s -0.27 s (-0.71%)
Estimated CPU 33.99 s 32.37 s -1.63 s (-4.78%)
Peak PSS 505.20 MiB 418.66 MiB -86.54 MiB (-17.13%)
Peak RSS 506.91 MiB 420.42 MiB -86.48 MiB (-17.06%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 32 / 40 27 / 40 -5
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.038, 3.039, 3.54, 4.541, 5.543, 6.544, 7.546, 9.048, 10.049, 11.05, 12.052, 13.053, 14.556, 15.557, 16.558, 17.56, 18.561, 20.064, 21.064, 21.565, 22.065, 23.066, 24.068, 25.569, 26.57, 27.57, 28.572, 29.574, 31.076, 32.078, 33.077, 34.078, 34.579, 35.08, 36.581, 37.582, 38.083]
    y-axis "CPU percent" 0 --> 200
    line [41.95, 107.82, 97.79, 121.69, 137.78, 129.76, 161.95, 109.82, 67.81, 99.89, 61.96, 73.83, 59.97, 55.94, 45.97, 45.97, 107.76, 97.89, 111.91, 99.92, 119.8, 129.84, 51.93, 107.85, 62.01, 21.99, 64, 7.99, 51.91, 123.82, 89.88, 47.96, 71.96, 0, 1.99, 69.91, 129.93, 69.82]
Loading
xychart-beta
    title "Base memory: RSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.038, 3.039, 3.54, 4.541, 5.543, 6.544, 7.546, 9.048, 10.049, 11.05, 12.052, 13.053, 14.556, 15.557, 16.558, 17.56, 18.561, 20.064, 21.064, 21.565, 22.065, 23.066, 24.068, 25.569, 26.57, 27.57, 28.572, 29.574, 31.076, 32.078, 33.077, 34.078, 34.579, 35.08, 36.581, 37.582, 38.083, 38.094]
    y-axis "Memory MiB" 0 --> 1000
    line [23.92, 123.43, 168.69, 183.34, 197.76, 235.2, 237.24, 264.84, 240.2, 207.27, 229.42, 214.31, 224.94, 187.2, 179.15, 220.93, 188.94, 207.87, 285.05, 343.33, 399.15, 506.91, 268.53, 216.13, 261.21, 218.04, 213.37, 203.59, 203.77, 205.05, 346.7, 264.55, 258.87, 270.64, 256.38, 249.54, 251.88, 267.48, 0, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.037, 2.039, 3.041, 4.042, 5.044, 5.545, 6.046, 6.546, 7.547, 8.548, 9.55, 10.551, 11.552, 12.554, 13.555, 15.057, 16.059, 17.059, 18.06, 19.061, 20.062, 21.063, 22.065, 23.066, 24.568, 25.57, 26.572, 27.571, 28.573, 29.575, 30.577, 31.579, 32.58, 33.08, 34.08, 35.08, 36.081, 37.082]
    y-axis "CPU percent" 0 --> 200
    line [51.92, 105.82, 93.82, 173.8, 135.77, 135.79, 123.79, 118, 131.68, 121.97, 111.72, 110, 21.95, 69.86, 73.9, 43.94, 117.84, 95.85, 141.74, 101.94, 109.84, 101.84, 141.64, 59.95, 103.92, 73.84, 31.95, 74.02, 7.98, 39.92, 119.69, 61.86, 8, 2, 37.99, 158.01, 63.9, 125.97]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.037, 2.039, 3.041, 4.042, 5.044, 5.545, 6.046, 6.546, 7.547, 8.548, 9.55, 10.551, 11.552, 12.554, 13.555, 15.057, 16.059, 17.059, 18.06, 19.061, 20.062, 21.063, 22.065, 23.066, 24.568, 25.57, 26.572, 27.571, 28.573, 29.575, 30.577, 31.579, 32.58, 33.08, 34.08, 35.08, 36.081, 37.082, 37.822]
    y-axis "Memory MiB" 0 --> 500
    line [23.68, 123.81, 150.38, 183.75, 229.99, 259.14, 241.55, 224.5, 241.47, 242.98, 234.43, 207.8, 234.49, 220.88, 186.55, 190.08, 197.9, 233.16, 210.36, 238.08, 308.75, 328.09, 374.82, 420.42, 220.99, 251.36, 215.26, 211.94, 212.72, 212.51, 222.27, 303.02, 253.2, 215.95, 215.34, 228.84, 238.59, 225.35, 248.32, 0]
    line [22.21, 122.04, 148.62, 181.99, 228.22, 257.68, 239.79, 222.75, 241.47, 240.87, 233.56, 206.04, 232.63, 219.12, 184.79, 188.32, 196.14, 231.4, 208.61, 236.32, 307.08, 326.33, 373.06, 418.66, 219.22, 249.8, 213.49, 209.98, 210.95, 210.75, 220.51, 301.27, 251.44, 214.18, 213.57, 227.08, 236.83, 223.59, 246.77, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.96 s 19.99 s +0.03 s (+0.15%)
Estimated CPU 0.44 s 0.43 s -0.01 s (-2.26%)
Peak PSS 87.94 MiB 87.34 MiB -0.60 MiB (-0.69%)
Peak RSS 89.94 MiB 90.01 MiB +0.07 MiB (+0.08%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

Copy link
Copy Markdown

Spider Bench A/B

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD 308ef152c305; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 179 / 240 184 / 240 +5 (+2.79%)
Contract fill 74.58% 76.67% +2.09 pp (+2.80%)
Sites with rows 37 / 48 38 / 48 +1 (+2.70%)
Sites meeting row contract 35 / 48 36 / 48 +1 (+2.86%)
Unexpected empty sites 11 10 -1 (-9.09%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 43.64 s 40.02 s -3.62 s (-8.30%)
Estimated CPU 37.19 s 35.22 s -1.97 s (-5.29%)
Peak PSS 484.16 MiB 445.28 MiB -38.88 MiB (-8.03%)
Peak RSS 485.85 MiB 446.81 MiB -39.04 MiB (-8.04%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 32 / 40 +5
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.539, 3.54, 4.041, 4.541, 5.042, 6.043, 7.546, 8.547, 10.049, 11.05, 12.052, 13.554, 14.554, 16.056, 17.057, 18.559, 19.561, 21.062, 22.064, 23.066, 24.569, 25.57, 27.073, 28.074, 29.577, 30.579, 32.082, 33.082, 34.083, 35.585, 36.586, 38.087, 39.089, 40.09, 40.591, 41.592, 43.095]
    y-axis "CPU percent" 0 --> 200
    line [59.95, 107.81, 87.92, 163.88, 123.84, 153.9, 141.79, 159.7, 21.97, 63.87, 127.87, 15.97, 113.89, 82, 45.97, 97.88, 85.75, 101.81, 129.87, 127.64, 113.65, 133.76, 137.9, 145.79, 131.92, 77.86, 7.99, 71.83, 8, 27.95, 133.82, 133.95, 62.01, 3.99, 2, 47.92, 45.93, 125.76]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.539, 3.54, 4.041, 4.541, 5.042, 6.043, 7.546, 8.547, 10.049, 11.05, 12.052, 13.554, 14.554, 16.056, 17.057, 18.559, 19.561, 21.062, 22.064, 23.066, 24.569, 25.57, 27.073, 28.074, 29.577, 30.579, 32.082, 33.082, 34.083, 35.585, 36.586, 38.087, 39.089, 40.09, 40.591, 41.592, 43.095, 43.638]
    y-axis "Memory MiB" 0 --> 1000
    line [23.83, 121.66, 173.02, 184.39, 223.13, 243.97, 250.46, 231.58, 227.7, 210.21, 247.91, 269.55, 257.12, 207.09, 206.96, 195.51, 236.71, 206.55, 268.93, 318.89, 325.54, 332.83, 485.85, 219.97, 271.34, 250.18, 251.32, 231.45, 232.24, 230.45, 241.59, 349.56, 264.52, 223.69, 208.44, 217.09, 218.14, 208.82, 248.75, 0]
    line [22.35, 119.98, 171.35, 182.8, 221.45, 242.41, 248.78, 229.9, 225.37, 208.53, 246.19, 267.74, 255.46, 204.18, 205.53, 193.91, 235.02, 204.86, 267.34, 317.2, 323.9, 331.25, 484.16, 218.28, 269.64, 248.49, 249.63, 229.76, 230.55, 228.78, 239.9, 347.67, 262.29, 210.75, 206.75, 215.4, 215.87, 207.13, 247.07, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.035, 2.037, 3.039, 3.54, 4.041, 4.541, 5.543, 6.544, 8.045, 9.046, 10.048, 11.048, 12.05, 13.551, 14.552, 15.553, 16.554, 17.055, 18.056, 19.057, 20.058, 21.06, 22.062, 23.564, 24.565, 25.567, 26.568, 28.07, 29.072, 30.073, 31.074, 32.076, 33.578, 34.579, 35.581, 36.583, 38.085, 39.087]
    y-axis "CPU percent" 0 --> 200
    line [53.94, 105.8, 97.79, 121.64, 165.83, 131.81, 137.8, 109.87, 63.92, 103.85, 119.81, 100.04, 103.85, 67.95, 121.9, 99.88, 37.96, 2, 79.96, 55.96, 101.9, 99.82, 129.68, 113.77, 101.92, 115.81, 129.96, 119.83, 125.74, 19.98, 81.91, 33.96, 81.88, 105.88, 3.99, 2, 45.93, 109.87]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.035, 2.037, 3.039, 3.54, 4.041, 4.541, 5.543, 6.544, 8.045, 9.046, 10.048, 11.048, 12.05, 13.551, 14.552, 15.553, 16.554, 17.055, 18.056, 19.057, 20.058, 21.06, 22.062, 23.564, 24.565, 25.567, 26.568, 28.07, 29.072, 30.073, 31.074, 32.076, 33.578, 34.579, 35.581, 36.583, 38.085, 39.087, 40.017]
    y-axis "Memory MiB" 0 --> 500
    line [23.91, 127.29, 167.38, 179.8, 200.57, 224.66, 252.15, 229.02, 253.22, 232.22, 213.01, 240, 232.14, 223.04, 184.69, 187.42, 189.47, 177.17, 176.16, 217.86, 194, 215.8, 278.19, 309.23, 322.84, 364.05, 446.81, 219.82, 245.02, 241.35, 218.62, 220.83, 214.15, 255.84, 223.41, 210.24, 219.57, 210.02, 235, 0]
    line [22.44, 125.62, 165.7, 178.12, 198.92, 222.99, 250.48, 227.34, 251.43, 230.55, 211.35, 238.23, 230.46, 221.18, 183.04, 185.75, 187.8, 175.5, 174.49, 216.19, 192.32, 214.13, 276.62, 307.55, 321.16, 362.52, 445.28, 217.74, 243.34, 239.67, 216.94, 219.16, 212.47, 254.16, 221.74, 208.57, 217.9, 208.34, 233.32, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 20.08 s 19.99 s -0.08 s (-0.42%)
Estimated CPU 0.47 s 0.45 s -0.02 s (-4.23%)
Peak PSS 86.50 MiB 88.09 MiB +1.59 MiB (+1.84%)
Peak RSS 89.12 MiB 90.31 MiB +1.20 MiB (+1.34%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

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Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD bc891cb582cb; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 179 / 240 -5 (-2.72%)
Contract fill 76.67% 74.58% -2.09 pp (-2.73%)
Sites with rows 38 / 48 37 / 48 -1 (-2.63%)
Sites meeting row contract 36 / 48 35 / 48 -1 (-2.78%)
Unexpected empty sites 10 11 +1 (+10.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 37.28 s 43.90 s +6.62 s (+17.76%)
Estimated CPU 33.97 s 36.25 s +2.27 s (+6.70%)
Peak PSS 500.68 MiB 499.04 MiB -1.64 MiB (-0.33%)
Peak RSS 502.30 MiB 497.72 MiB -4.58 MiB (-0.91%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 32 / 40 27 / 40 -5
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 3.039, 4.04, 5.041, 6.043, 6.543, 7.545, 8.546, 9.548, 10.547, 11.549, 12.551, 13.551, 14.552, 15.553, 16.555, 17.555, 18.557, 19.058, 20.059, 21.06, 21.561, 22.061, 23.061, 24.063, 25.065, 26.065, 27.067, 28.068, 29.07, 30.072, 31.573, 32.574, 33.575, 34.575, 35.577, 36.579]
    y-axis "CPU percent" 0 --> 200
    line [55.94, 105.87, 89.79, 171.88, 139.81, 111.83, 95.97, 129.81, 131.83, 133.78, 90.02, 53.92, 99.83, 53.96, 41.99, 97.93, 47.92, 115.88, 99.84, 107.72, 105.92, 99.93, 127.75, 129.82, 90.03, 113.84, 95.85, 19.97, 81.87, 27.97, 23.96, 111.8, 125.8, 110.03, 2, 49.98, 15.97, 119.73]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.037, 3.039, 4.04, 5.041, 6.043, 6.543, 7.545, 8.546, 9.548, 10.547, 11.549, 12.551, 13.551, 14.552, 15.553, 16.555, 17.555, 18.557, 19.058, 20.059, 21.06, 21.561, 22.061, 23.061, 24.063, 25.065, 26.065, 27.067, 28.068, 29.07, 30.072, 31.573, 32.574, 33.575, 34.575, 35.577, 36.579, 37.277]
    y-axis "Memory MiB" 0 --> 1000
    line [24.01, 123.85, 167.94, 183.34, 231.17, 249.12, 219.84, 247.63, 223.4, 237.67, 245.93, 237.41, 229.71, 236.15, 197.79, 198.96, 230.34, 198.88, 223.95, 300.56, 333.15, 342.06, 409.95, 502.3, 231.5, 223.13, 266.09, 232.51, 220.96, 221.85, 220.16, 230.78, 288.81, 286.01, 255.27, 236.54, 245.91, 234.11, 260.78, 0]
    line [22.53, 122.17, 166.28, 181.68, 229.49, 247.44, 218.45, 245.95, 221.71, 236.15, 244.48, 235.72, 228.01, 234.43, 196.1, 197.27, 228.65, 197.21, 222.5, 298.97, 331.46, 340.53, 408.25, 500.68, 229.79, 220.39, 264.47, 230.83, 219.27, 220.15, 218.47, 229.66, 287.16, 284.47, 253.58, 234.84, 244.22, 232.44, 259.08, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.537, 3.537, 4.039, 5.04, 6.04, 7.543, 8.543, 10.045, 11.047, 12.048, 13.548, 14.551, 16.053, 17.053, 18.555, 19.556, 21.058, 22.058, 23.059, 24.562, 25.063, 25.564, 27.066, 28.067, 29.57, 30.57, 32.072, 33.073, 34.075, 35.576, 36.579, 38.081, 38.581, 39.081, 40.583, 41.583, 43.085]
    y-axis "CPU percent" 0 --> 200
    line [39.88, 126.03, 93.92, 175.56, 141.8, 123.88, 123.83, 66, 129.89, 95.7, 73.9, 45.98, 7.98, 23.94, 81.94, 107.86, 115.84, 109.79, 115.95, 115.87, 101.83, 139.8, 125.87, 127.84, 119.8, 13.98, 73.99, 7.98, 8, 111.7, 133.81, 75.81, 2, 0, 0, 2, 132.02, 109.79]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.036, 2.537, 3.537, 4.039, 5.04, 6.04, 7.543, 8.543, 10.045, 11.047, 12.048, 13.548, 14.551, 16.053, 17.053, 18.555, 19.556, 21.058, 22.058, 23.059, 24.562, 25.063, 25.564, 27.066, 28.067, 29.57, 30.57, 32.072, 33.073, 34.075, 35.576, 36.579, 38.081, 38.581, 39.081, 40.583, 41.583, 43.085, 43.899]
    y-axis "Memory MiB" 0 --> 1000
    line [23.96, 121.33, 169.79, 190.92, 229.23, 256.89, 222.37, 245.57, 233.81, 231.21, 227.52, 219.05, 193.09, 188.95, 186.09, 221.65, 210.71, 226.9, 338.18, 338.59, 333.51, 400.65, 497.72, 280.17, 230.91, 225.75, 213.97, 221.3, 212.17, 219.51, 280.68, 283.54, 247.15, 208.78, 206.78, 206.78, 219.34, 218.98, 236.09, 0]
    line [22.49, 119.73, 168.1, 189.13, 227.54, 255.32, 220.68, 243.9, 232.14, 229.89, 225.81, 217.38, 191.38, 187.24, 184.39, 219.95, 209, 225.2, 336.48, 336.89, 331.81, 398.95, 499.04, 278.47, 229.22, 224.05, 212.27, 219.6, 210.47, 218.09, 278.99, 281.83, 245.45, 207.08, 205.08, 205.08, 217.64, 217.28, 234.46, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.99 s 20.06 s +0.07 s (+0.33%)
Estimated CPU 0.48 s 0.45 s -0.03 s (-6.03%)
Peak PSS 87.68 MiB 88.20 MiB +0.53 MiB (+0.60%)
Peak RSS 89.77 MiB 90.71 MiB +0.94 MiB (+1.05%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

Copy link
Copy Markdown

Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD 826f17e601f9; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 179 / 240 -5 (-2.72%)
Contract fill 76.67% 74.58% -2.09 pp (-2.73%)
Sites with rows 38 / 48 37 / 48 -1 (-2.63%)
Sites meeting row contract 36 / 48 35 / 48 -1 (-2.78%)
Unexpected empty sites 10 11 +1 (+10.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 36; HTTP error + rows: 2; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 45.86 s 37.27 s -8.58 s (-18.72%)
Estimated CPU 34.68 s 32.48 s -2.20 s (-6.35%)
Peak PSS 458.62 MiB 463.67 MiB +5.06 MiB (+1.10%)
Peak RSS 460.30 MiB 465.37 MiB +5.07 MiB (+1.10%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 32 / 40 27 / 40 -5
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.034, 1.534, 2.536, 4.039, 5.04, 6.54, 7.541, 8.042, 9.044, 10.046, 11.547, 13.049, 14.05, 15.553, 16.554, 18.057, 19.057, 20.558, 21.559, 23.062, 24.562, 25.564, 26.565, 27.066, 28.066, 29.567, 30.568, 32.071, 33.072, 34.573, 36.075, 37.077, 38.578, 39.579, 41.08, 42.08, 43.582, 44.584]
    y-axis "CPU percent" 0 --> 200
    line [27.98, 0, 123.81, 87.94, 155.89, 143.8, 113.91, 163.66, 59.89, 89.87, 81.88, 13.99, 2, 121.78, 111.92, 35.94, 2, 116.01, 75.85, 109.91, 110.09, 103.78, 137.84, 123.93, 46.02, 139.72, 103.96, 33.92, 93.84, 17.99, 115.78, 103.83, 85.91, 5.99, 29.96, 0, 141.91, 101.9]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.034, 1.534, 2.536, 4.039, 5.04, 6.54, 7.541, 8.042, 9.044, 10.046, 11.547, 13.049, 14.05, 15.553, 16.554, 18.057, 19.057, 20.558, 21.559, 23.062, 24.562, 25.564, 26.565, 27.066, 28.066, 29.567, 30.568, 32.071, 33.072, 34.573, 36.075, 37.077, 38.578, 39.579, 41.08, 42.08, 43.582, 44.584, 45.857]
    y-axis "Memory MiB" 0 --> 500
    line [24.18, 120.6, 118.14, 155.13, 178.12, 241.36, 247.65, 258.7, 240.61, 232.83, 242.17, 246.18, 184.77, 181.92, 200.04, 195.2, 190.04, 183.07, 237.21, 211.45, 256.44, 329.37, 361.41, 460.3, 236.54, 227.05, 262.87, 224.45, 211.09, 206.8, 211.53, 310.38, 353.73, 246.69, 208.9, 213.64, 208.06, 198.37, 215.98, 0]
    line [22.69, 118.91, 116.46, 153.44, 176.27, 239.67, 245.95, 257, 238.91, 231.28, 240.47, 244.48, 183.07, 180.22, 198.34, 193.49, 188.34, 181.37, 235.51, 209.67, 254.79, 327.67, 359.74, 458.62, 234.84, 225.36, 261.17, 222.74, 209.38, 205.1, 209.83, 309.8, 353.08, 244.99, 207.2, 212.11, 206.36, 196.67, 214.32, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 3.038, 4.04, 5.042, 6.543, 7.044, 7.545, 8.545, 9.545, 10.546, 11.546, 12.547, 13.548, 14.55, 15.552, 16.552, 17.553, 19.054, 20.054, 21.055, 22.056, 22.556, 23.057, 24.059, 25.061, 26.063, 27.065, 28.066, 29.067, 30.068, 31.57, 32.571, 33.573, 34.074, 34.575, 35.577, 36.577]
    y-axis "CPU percent" 0 --> 200
    line [49.95, 99.9, 99.81, 139.93, 155.65, 131.87, 155.76, 127.81, 129.95, 137.9, 74.03, 44.02, 99.85, 61.96, 39.99, 55.86, 40.03, 133.85, 100.03, 113.92, 99.92, 104.03, 131.78, 143.77, 123.7, 105.84, 71.85, 17.96, 78.05, 21.97, 30.02, 95.83, 61.97, 65.84, 0, 63.88, 43.94, 119.95]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.037, 3.038, 4.04, 5.042, 6.543, 7.044, 7.545, 8.545, 9.545, 10.546, 11.546, 12.547, 13.548, 14.55, 15.552, 16.552, 17.553, 19.054, 20.054, 21.055, 22.056, 22.556, 23.057, 24.059, 25.061, 26.063, 27.065, 28.066, 29.067, 30.068, 31.57, 32.571, 33.573, 34.074, 34.575, 35.577, 36.577, 37.272]
    y-axis "Memory MiB" 0 --> 500
    line [23.85, 124.07, 146.14, 174.37, 203.65, 239.38, 247, 249.38, 239.87, 241.26, 244.67, 228.82, 223.96, 219.42, 199.77, 197.4, 208.13, 194.63, 220.81, 287.39, 391.99, 365.81, 449.07, 465.37, 230.58, 234.49, 264.97, 225.96, 215.7, 216.8, 218.44, 228.39, 260.12, 253.23, 263.78, 263.81, 251.3, 240.79, 260.2, 0]
    line [22.38, 122.4, 144.46, 172.7, 201.98, 237.57, 244.88, 247.71, 238.2, 239.59, 243, 227.13, 222.29, 217.75, 198.16, 195.73, 206.46, 192.96, 219.1, 285.73, 390.32, 364.28, 447.58, 463.67, 228.91, 233.56, 263.3, 224.29, 214.2, 215.12, 216.77, 226.72, 258.45, 251.56, 262.1, 262.14, 249.52, 238.96, 258.53, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.99 s 19.91 s -0.08 s (-0.42%)
Estimated CPU 0.47 s 0.45 s -0.02 s (-4.03%)
Peak PSS 87.59 MiB 87.96 MiB +0.37 MiB (+0.42%)
Peak RSS 90.08 MiB 89.94 MiB -0.14 MiB (-0.15%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

Copy link
Copy Markdown

Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD 300a2b6314b7; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 179 / 240 179 / 240 0 (0.00%)
Contract fill 74.58% 74.58% 0.00 pp (0.00%)
Sites with rows 37 / 48 37 / 48 0 (0.00%)
Sites meeting row contract 35 / 48 35 / 48 0 (0.00%)
Unexpected empty sites 11 11 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 40.00 s 41.94 s +1.93 s (+4.84%)
Estimated CPU 33.94 s 36.73 s +2.79 s (+8.23%)
Peak PSS 467.01 MiB 438.46 MiB -28.56 MiB (-6.12%)
Peak RSS 468.81 MiB 440.20 MiB -28.62 MiB (-6.10%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.035, 2.037, 3.039, 3.541, 4.041, 4.542, 5.043, 5.543, 6.544, 8.044, 9.045, 10.046, 11.048, 12.048, 13.55, 14.552, 15.554, 16.554, 18.054, 19.056, 20.057, 21.057, 22.058, 23.559, 24.56, 25.561, 26.563, 28.064, 29.065, 30.066, 31.067, 32.07, 33.57, 34.571, 35.572, 36.573, 38.074, 39.075]
    y-axis "CPU percent" 0 --> 200
    line [49.88, 107.79, 109.91, 119.67, 145.91, 125.86, 165.58, 135.94, 89.88, 45.94, 48.03, 135.93, 43.88, 42, 123.76, 85.85, 61.88, 98.06, 95.93, 97.88, 111.85, 100.01, 115.86, 47.94, 109.82, 123.98, 23.97, 97.95, 9.99, 41.95, 127.94, 99.8, 82, 2, 2, 0, 39.96, 113.88]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.035, 2.037, 3.039, 3.541, 4.041, 4.542, 5.043, 5.543, 6.544, 8.044, 9.045, 10.046, 11.048, 12.048, 13.55, 14.552, 15.554, 16.554, 18.054, 19.056, 20.057, 21.057, 22.058, 23.559, 24.56, 25.561, 26.563, 28.064, 29.065, 30.066, 31.067, 32.07, 33.57, 34.571, 35.572, 36.573, 38.074, 39.075, 40.002]
    y-axis "Memory MiB" 0 --> 500
    line [23.91, 120.91, 144.99, 175.14, 197.52, 219.4, 238.77, 228.39, 227.17, 246.87, 229.19, 243.57, 240.62, 217.88, 221.05, 187.84, 187.28, 180.43, 229.77, 211.04, 270.79, 384.67, 345.79, 468.81, 217.2, 233.78, 234.91, 210.26, 212.24, 214.11, 218.84, 286.47, 353.98, 252.46, 213.01, 211.36, 217.91, 209.86, 233.8, 0]
    line [22.49, 119.24, 143.32, 173.79, 195.88, 217.73, 237.04, 226.69, 223.92, 245.29, 227.48, 241.87, 240.29, 216.17, 219.35, 186.13, 185.58, 178.76, 228.07, 209.33, 269.09, 382.96, 344.21, 467.01, 215.78, 232.08, 232.65, 208.63, 210.54, 212.41, 217.14, 284.83, 352.27, 250.66, 211.31, 209.66, 216.21, 208.16, 232.16, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.035, 2.037, 2.538, 3.538, 4.039, 4.54, 6.042, 7.043, 8.044, 9.547, 10.549, 11.55, 13.052, 14.054, 15.055, 16.557, 17.558, 18.559, 20.06, 21.061, 22.063, 23.563, 24.063, 24.564, 25.565, 27.066, 28.068, 29.07, 30.572, 31.574, 32.575, 34.076, 35.079, 36.08, 37.583, 38.585, 39.586, 41.088]
    y-axis "CPU percent" 0 --> 200
    line [41.96, 105.92, 125.85, 99.9, 169.7, 131.86, 117.89, 123.8, 87.86, 95.75, 81.77, 0, 99.89, 53.96, 27.98, 107.86, 121.94, 137.8, 111.92, 127.94, 103.75, 104, 143.9, 149.9, 111.87, 119.97, 35.93, 21.96, 81.88, 15.98, 37.93, 119.9, 133.69, 83.83, 7.99, 51.95, 127.77, 107.86]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.035, 2.037, 2.538, 3.538, 4.039, 4.54, 6.042, 7.043, 8.044, 9.547, 10.549, 11.55, 13.052, 14.054, 15.055, 16.557, 17.558, 18.559, 20.06, 21.061, 22.063, 23.563, 24.063, 24.564, 25.565, 27.066, 28.068, 29.07, 30.572, 31.574, 32.575, 34.076, 35.079, 36.08, 37.583, 38.585, 39.586, 41.088, 41.937]
    y-axis "Memory MiB" 0 --> 500
    line [23.69, 123.22, 148.46, 176.88, 200.86, 227.88, 241.78, 212.57, 244.79, 236.55, 230.42, 212.92, 200.8, 200.43, 190.14, 191.01, 234.49, 206.93, 232.89, 417.99, 328.21, 344.57, 429.48, 440.2, 224.09, 217.17, 249.06, 237.53, 234.87, 230.8, 236.37, 230.63, 361.18, 266.35, 244.25, 206.15, 205.69, 195.6, 227.19, 0]
    line [22.23, 121.53, 146.78, 175.19, 199.17, 226.19, 240.45, 210.83, 243.05, 234.81, 228.68, 211.18, 199.06, 198.69, 188.41, 189.27, 232.75, 205.19, 231.27, 401.03, 326.48, 342.91, 427.74, 438.46, 222.35, 215.43, 247.32, 235.79, 233.13, 229.06, 234.63, 228.89, 359.44, 264.61, 242.51, 204.41, 203.95, 193.86, 225.55, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 20.06 s 19.99 s -0.07 s (-0.34%)
Estimated CPU 0.48 s 0.50 s +0.02 s (+3.94%)
Peak PSS 85.80 MiB 87.45 MiB +1.65 MiB (+1.92%)
Peak RSS 88.26 MiB 89.50 MiB +1.24 MiB (+1.41%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

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Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD ca45cfb115c0; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 177 / 240 179 / 240 +2 (+1.13%)
Contract fill 73.75% 74.58% +0.83 pp (+1.13%)
Sites with rows 36 / 48 37 / 48 +1 (+2.78%)
Sites meeting row contract 35 / 48 35 / 48 0 (0.00%)
Unexpected empty sites 12 11 -1 (-8.33%)
Partial-row sites 1 2 +1 (+100.00%)
Site outcomes extracted: 35; HTTP error + rows: 1; empty: 7; HTTP error + empty: 2; snapshot error + empty: 3 extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 38.00 s 41.62 s +3.62 s (+9.53%)
Estimated CPU 31.01 s 34.19 s +3.18 s (+10.25%)
Peak PSS 458.91 MiB 442.03 MiB -16.88 MiB (-3.68%)
Peak RSS 460.72 MiB 443.73 MiB -16.99 MiB (-3.69%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 35 / 40 37 / 40 +2
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.041, 2.043, 3.044, 4.045, 5.047, 5.548, 6.549, 7.049, 7.549, 8.552, 9.553, 10.555, 11.557, 12.558, 13.56, 15.062, 16.062, 17.063, 18.064, 19.065, 20.067, 21.068, 22.069, 23.07, 23.57, 24.571, 25.572, 26.574, 27.575, 28.577, 29.578, 30.579, 31.58, 32.581, 34.083, 35.085, 36.086, 37.087]
    y-axis "CPU percent" 0 --> 200
    line [23.98, 111.81, 105.93, 157.82, 133.76, 131.75, 114.02, 171.95, 133.93, 131.67, 127.87, 111.72, 59.89, 0, 0, 125.93, 71.98, 35.99, 77.94, 93.87, 105.8, 113.92, 103.9, 107.79, 129.93, 41.92, 127.82, 109.78, 12, 77.86, 49.94, 21.97, 59.93, 50.01, 2, 63.92, 25.97, 119.85]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.04, 1.041, 2.043, 3.044, 4.045, 5.047, 5.548, 6.549, 7.049, 7.549, 8.552, 9.553, 10.555, 11.557, 12.558, 13.56, 15.062, 16.062, 17.063, 18.064, 19.065, 20.067, 21.068, 22.069, 23.07, 23.57, 24.571, 25.572, 26.574, 27.575, 28.577, 29.578, 30.579, 31.58, 32.581, 34.083, 35.085, 36.086, 37.087, 37.997]
    y-axis "Memory MiB" 0 --> 500
    line [23.78, 117.2, 170.63, 195.34, 220.45, 247.91, 243.24, 251.84, 250.78, 238.72, 242.69, 249.4, 232.8, 226.34, 221.97, 171.98, 189.29, 190.46, 192.71, 228.5, 211.59, 264.48, 375.58, 356.09, 434.38, 460.72, 218.9, 236.25, 222.52, 207.49, 212.11, 204.68, 215.16, 205.07, 219.04, 213.83, 219.71, 206.95, 240.5, 0]
    line [22.28, 115.51, 168.85, 193.65, 218.77, 246.19, 241.57, 250.13, 249.09, 235.28, 240.86, 247.69, 231.09, 224.69, 220.25, 170.26, 187.57, 188.73, 190.98, 224.32, 210.03, 262.84, 373.84, 354.5, 432.71, 458.91, 217.16, 238.14, 220.67, 205.75, 210.38, 202.95, 213.43, 203.33, 217.3, 212.09, 217.97, 205.21, 238.76, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.037, 2.038, 2.539, 3.039, 3.54, 4.541, 6.043, 7.045, 8.047, 9.55, 10.553, 11.553, 13.055, 14.057, 15.057, 16.559, 17.561, 18.562, 20.063, 21.065, 22.067, 23.568, 24.567, 25.569, 27.07, 28.072, 29.074, 30.575, 31.577, 32.579, 34.081, 35.081, 36.083, 37.585, 38.086, 38.586, 39.587, 41.088]
    y-axis "CPU percent" 0 --> 200
    line [55.93, 113.8, 129.8, 101.91, 91.87, 169.77, 135.79, 119.79, 117.76, 113.76, 131.57, 91.99, 95.88, 27.93, 4, 27.96, 113.8, 79.91, 99.81, 113.95, 103.72, 136.06, 82.03, 141.78, 49.92, 23.96, 73.89, 9.98, 5.99, 101.85, 103.94, 40, 87.82, 63.91, 0, 43.94, 46.02, 119.8]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.037, 2.038, 2.539, 3.039, 3.54, 4.541, 6.043, 7.045, 8.047, 9.55, 10.553, 11.553, 13.055, 14.057, 15.057, 16.559, 17.561, 18.562, 20.063, 21.065, 22.067, 23.568, 24.567, 25.569, 27.07, 28.072, 29.074, 30.575, 31.577, 32.579, 34.081, 35.081, 36.083, 37.585, 38.086, 38.586, 39.587, 41.088, 41.619]
    y-axis "Memory MiB" 0 --> 500
    line [24.12, 124.13, 148.34, 175.44, 195.19, 186.2, 226.34, 236.97, 252.08, 243.74, 244.41, 251.26, 236, 202.71, 192.64, 188.86, 190.48, 230.06, 206.42, 271.73, 381.05, 339.48, 443.73, 207.59, 225.63, 224.76, 220.57, 219.25, 222.04, 219.21, 280.03, 351.97, 231.07, 230.21, 230.43, 214.04, 217.1, 210.07, 245.26, 0]
    line [22.61, 122.41, 146.63, 173.81, 193.47, 184.49, 224.74, 235.26, 250.64, 242.04, 242.69, 249.56, 234.3, 200.98, 190.92, 187.13, 188.75, 228.33, 204.64, 270.09, 379.32, 337.92, 442.03, 205.86, 224.47, 223.01, 219.01, 217.79, 220.3, 217.46, 278.29, 350.71, 229.32, 228.46, 228.68, 212.29, 216.96, 208.32, 243.51, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.91 s 19.99 s +0.07 s (+0.37%)
Estimated CPU 0.44 s 0.42 s -0.02 s (-4.30%)
Peak PSS 88.56 MiB 88.16 MiB -0.40 MiB (-0.45%)
Peak RSS 90.24 MiB 90.78 MiB +0.54 MiB (+0.59%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

Copy link
Copy Markdown

Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD f68c37dc3d79; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 179 / 240 179 / 240 0 (0.00%)
Contract fill 74.58% 74.58% 0.00 pp (0.00%)
Sites with rows 37 / 48 37 / 48 0 (0.00%)
Sites meeting row contract 35 / 48 35 / 48 0 (0.00%)
Unexpected empty sites 11 11 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 35; HTTP error + rows: 2; empty: 8; HTTP error + empty: 1; snapshot error + empty: 2 extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 44.46 s 39.34 s -5.12 s (-11.51%)
Estimated CPU 36.52 s 34.74 s -1.78 s (-4.88%)
Peak PSS 453.59 MiB 463.75 MiB +10.16 MiB (+2.24%)
Peak RSS 465.36 MiB 465.45 MiB +0.09 MiB (+0.02%)
Peak threads 27 26 -1 (-3.70%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.034, 2.536, 3.537, 4.038, 5.04, 6.041, 7.543, 8.544, 10.047, 11.049, 12.551, 13.554, 14.054, 15.054, 16.056, 17.558, 18.56, 20.062, 21.063, 22.563, 23.565, 24.567, 26.068, 26.569, 27.07, 28.573, 29.574, 31.078, 32.079, 33.579, 34.581, 36.082, 37.082, 38.584, 39.586, 41.086, 42.087, 43.587]
    y-axis "CPU percent" 0 --> 200
    line [53.97, 103.85, 81.95, 163.59, 141.81, 101.88, 159.71, 85.95, 79.87, 127.77, 15.97, 5.99, 0, 79.94, 43.96, 19.98, 67.94, 79.94, 131.83, 113.92, 131.89, 101.94, 99.85, 139.82, 131.89, 121.65, 29.95, 39.92, 17.97, 89.95, 7.99, 90.04, 127.97, 55.87, 13.99, 0, 127.8, 120.01]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.034, 2.536, 3.537, 4.038, 5.04, 6.041, 7.543, 8.544, 10.047, 11.049, 12.551, 13.554, 14.054, 15.054, 16.056, 17.558, 18.56, 20.062, 21.063, 22.563, 23.565, 24.567, 26.068, 26.569, 27.07, 28.573, 29.574, 31.078, 32.079, 33.579, 34.581, 36.082, 37.082, 38.584, 39.586, 41.086, 42.087, 43.587, 44.457]
    y-axis "Memory MiB" 0 --> 500
    line [23.77, 118.25, 169.4, 184.02, 225.4, 252.17, 228.95, 261.23, 231.12, 207.37, 231.03, 171.44, 171.95, 170.96, 196.6, 191.26, 191.23, 207.71, 210.07, 225.5, 373.82, 331.59, 344.61, 413.62, 465.36, 232.4, 241.41, 267.18, 229.16, 219.77, 229.94, 223.04, 276.76, 359.29, 277.35, 242.63, 259.81, 246.62, 261.68, 0]
    line [22.28, 116.57, 168.02, 182.34, 223.21, 250.48, 227.27, 259.54, 229.43, 205.68, 229.34, 169.75, 170.27, 169.28, 194.91, 189.57, 189.48, 206.03, 208.47, 223.82, 372.87, 329.9, 348.43, 411.97, 453.59, 230.71, 239.73, 265.87, 227.48, 218.08, 228.29, 221.38, 276.15, 357.61, 275.68, 240.95, 258.13, 244, 260.05, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 3.037, 3.537, 4.038, 4.539, 5.04, 5.54, 6.541, 7.543, 9.043, 10.045, 11.046, 12.048, 13.049, 14.551, 15.552, 16.553, 17.554, 18.555, 20.057, 21.059, 22.06, 23.061, 24.063, 25.065, 26.566, 27.568, 28.569, 29.57, 30.571, 32.073, 33.074, 34.076, 35.077, 36.078, 37.58, 38.581]
    y-axis "CPU percent" 0 --> 200
    line [55.94, 109.84, 97.97, 121.95, 147.59, 127.84, 137.85, 133.85, 159.8, 75.89, 131.95, 103.81, 113.87, 43.94, 41.97, 115.93, 73.8, 45.95, 98.04, 121.87, 101.82, 107.9, 99.77, 135.82, 147.81, 129.82, 81.87, 19.97, 73.95, 7.99, 9.99, 129.86, 133.95, 107.99, 6, 0, 17.98, 119.75]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.037, 3.037, 3.537, 4.038, 4.539, 5.04, 5.54, 6.541, 7.543, 9.043, 10.045, 11.046, 12.048, 13.049, 14.551, 15.552, 16.553, 17.554, 18.555, 20.057, 21.059, 22.06, 23.061, 24.063, 25.065, 26.566, 27.568, 28.569, 29.57, 30.571, 32.073, 33.074, 34.076, 35.077, 36.078, 37.58, 38.581, 39.341]
    y-axis "Memory MiB" 0 --> 500
    line [23.98, 123.26, 147.45, 182.77, 210.39, 213.73, 242.42, 227.78, 231.04, 253.59, 227.98, 233.97, 227.88, 213.65, 208.18, 190.79, 189.79, 191.64, 191.79, 233.1, 209.39, 286.64, 329.15, 355.3, 465.45, 225.1, 216.55, 211.16, 201.91, 201.53, 205.05, 208.14, 354.39, 287.17, 237.85, 203.95, 214.43, 203.19, 234.77, 0]
    line [22.48, 121.59, 145.77, 181.08, 208.72, 212.11, 241.15, 226.11, 227.77, 251.91, 226.31, 232.33, 226.18, 211.96, 206.48, 189.1, 188.09, 189.94, 190.09, 231.41, 207.69, 285.08, 327.45, 353.65, 463.75, 223.41, 214.68, 209.46, 200.21, 199.84, 203.36, 207.49, 352.7, 284.73, 236.15, 202.26, 212.73, 201.49, 233.07, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 20.04 s 19.95 s -0.09 s (-0.47%)
Estimated CPU 0.46 s 0.41 s -0.05 s (-10.82%)
Peak PSS 85.66 MiB 88.98 MiB +3.32 MiB (+3.88%)
Peak RSS 88.35 MiB 91.08 MiB +2.73 MiB (+3.10%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

Copy link
Copy Markdown

Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD 02ac282b1efe; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 179 / 240 179 / 240 0 (0.00%)
Contract fill 74.58% 74.58% 0.00 pp (0.00%)
Sites with rows 37 / 48 37 / 48 0 (0.00%)
Sites meeting row contract 35 / 48 35 / 48 0 (0.00%)
Unexpected empty sites 11 11 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 37.03 s 41.73 s +4.70 s (+12.68%)
Estimated CPU 32.01 s 33.05 s +1.03 s (+3.23%)
Peak PSS 434.67 MiB 461.47 MiB +26.80 MiB (+6.17%)
Peak RSS 436.41 MiB 463.21 MiB +26.80 MiB (+6.14%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.038, 3.038, 4.039, 4.539, 5.04, 5.541, 6.041, 6.542, 7.043, 8.044, 9.546, 10.548, 11.548, 12.55, 13.551, 14.552, 15.553, 16.555, 17.556, 18.557, 19.559, 20.561, 21.562, 22.563, 23.564, 24.564, 25.566, 26.568, 28.07, 29.071, 30.071, 31.073, 32.073, 33.074, 34.076, 35.077, 36.078]
    y-axis "CPU percent" 0 --> 200
    line [49.94, 101.84, 99.94, 151.88, 125.83, 155.81, 135.81, 107.88, 163.8, 109.78, 77.91, 137.75, 105.85, 0, 73.84, 123.86, 49.95, 31.98, 101.93, 67.93, 135.63, 99.81, 109.92, 101.92, 137.78, 65.99, 136.1, 105.78, 23.98, 79.96, 21.98, 103.93, 73.92, 85.89, 9.99, 0, 87.93, 113.89]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.036, 2.038, 3.038, 4.039, 4.539, 5.04, 5.541, 6.041, 6.542, 7.043, 8.044, 9.546, 10.548, 11.548, 12.55, 13.551, 14.552, 15.553, 16.555, 17.556, 18.557, 19.559, 20.561, 21.562, 22.563, 23.564, 24.564, 25.566, 26.568, 28.07, 29.071, 30.071, 31.073, 32.073, 33.074, 34.076, 35.077, 36.078, 37.034]
    y-axis "Memory MiB" 0 --> 500
    line [23.95, 124.62, 150.26, 178.21, 204.65, 225.06, 229.55, 226.54, 224.62, 246.95, 241.84, 228.05, 243.93, 224.34, 214.31, 184.46, 198.45, 196.03, 191.71, 227.8, 207.2, 223.01, 302.25, 302.59, 369.81, 436.41, 223.09, 236.79, 216.2, 203.95, 204.83, 214.4, 266.34, 238.7, 234.36, 221.77, 233.73, 212.99, 240.24, 0]
    line [22.41, 122.9, 148.54, 176.25, 202.92, 223.31, 227.8, 224.79, 223.29, 245.23, 240.08, 226.3, 242.18, 222.85, 212.56, 182.72, 196.69, 194.28, 190.04, 226.05, 205.46, 221.27, 300.57, 302.83, 368.21, 434.67, 221.33, 235.03, 214.6, 202.19, 203.08, 212.65, 264.5, 236.95, 232.6, 220.02, 231.98, 211.24, 238.5, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.034, 2.534, 3.535, 4.536, 6.038, 6.539, 7.04, 8.042, 9.545, 10.546, 11.045, 11.546, 13.048, 14.049, 15.05, 16.551, 17.552, 18.554, 20.056, 21.057, 22.058, 23.558, 24.559, 25.56, 26.06, 27.062, 28.063, 29.065, 30.567, 31.568, 32.569, 34.071, 35.073, 36.074, 37.577, 38.577, 39.578, 41.079]
    y-axis "CPU percent" 0 --> 200
    line [23.97, 122.03, 141.95, 135.84, 16, 0, 11.97, 9.98, 89.76, 125.94, 162.1, 129.82, 93.84, 133.9, 69.93, 101.91, 73.95, 43.96, 97.92, 85.95, 131.87, 110, 103.97, 99.89, 129.91, 105.84, 131.87, 115.76, 17.98, 67.81, 35.96, 49.93, 105.82, 85.88, 61.92, 52.08, 45.94, 127.79]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.034, 2.534, 3.535, 4.536, 6.038, 6.539, 7.04, 8.042, 9.545, 10.546, 11.045, 11.546, 13.048, 14.049, 15.05, 16.551, 17.552, 18.554, 20.056, 21.057, 22.058, 23.558, 24.559, 25.56, 26.06, 27.062, 28.063, 29.065, 30.567, 31.568, 32.569, 34.071, 35.073, 36.074, 37.577, 38.577, 39.578, 41.079, 41.731]
    y-axis "Memory MiB" 0 --> 500
    line [23.79, 111.03, 177.54, 207.34, 256.25, 221.15, 220.95, 218.97, 218.73, 237.75, 249.73, 246.39, 235.99, 233.72, 239.22, 221.05, 232.52, 232.84, 217.13, 246.79, 210.29, 224.33, 375.7, 350.84, 409.54, 463.21, 221.93, 228.02, 231.75, 213.88, 214.41, 215.82, 224.27, 227.79, 227.06, 231.18, 210.7, 203.75, 245.61, 0]
    line [22.29, 109.31, 175.76, 205.56, 254.49, 219.37, 219.17, 217.19, 216.95, 235.97, 247.95, 244.24, 234.22, 231.95, 235.67, 219.27, 230.74, 231.05, 215.34, 245.01, 208.54, 222.54, 374, 349.3, 407.75, 461.47, 220.15, 226.41, 229.97, 212.09, 212.63, 214.03, 222.48, 226.01, 225.28, 229.39, 209.07, 201.97, 243.84, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.98 s 20.02 s +0.04 s (+0.19%)
Estimated CPU 0.44 s 0.47 s +0.03 s (+6.55%)
Peak PSS 86.99 MiB 86.66 MiB -0.33 MiB (-0.38%)
Peak RSS 89.36 MiB 89.26 MiB -0.11 MiB (-0.12%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

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Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD c6d6ac392a1e; benchmark order: head-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 179 / 240 179 / 240 0 (0.00%)
Contract fill 74.58% 74.58% 0.00 pp (0.00%)
Sites with rows 37 / 48 37 / 48 0 (0.00%)
Sites meeting row contract 35 / 48 35 / 48 0 (0.00%)
Unexpected empty sites 11 11 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 40.94 s 39.22 s -1.72 s (-4.21%)
Estimated CPU 35.95 s 33.33 s -2.62 s (-7.29%)
Peak PSS 491.14 MiB 429.94 MiB -61.21 MiB (-12.46%)
Peak RSS 493.32 MiB 431.99 MiB -61.32 MiB (-12.43%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.035, 2.036, 2.536, 3.036, 3.536, 4.537, 5.54, 7.04, 7.54, 8.041, 9.043, 10.545, 11.546, 12.546, 13.547, 15.049, 16.051, 17.052, 18.053, 19.554, 20.555, 21.555, 23.058, 24.059, 25.059, 26.06, 27.561, 28.562, 29.563, 31.065, 32.066, 33.068, 34.069, 35.57, 36.573, 37.575, 38.575, 40.078]
    y-axis "CPU percent" 0 --> 200
    line [0, 77.91, 106.01, 87.99, 121.98, 131.62, 143.71, 118.05, 167.75, 123.81, 123.89, 139.87, 83.92, 48.03, 111.88, 9.99, 55.98, 31.96, 99.92, 100, 129.87, 121.9, 99.85, 121.78, 147.88, 109.92, 109.83, 14.01, 75.9, 6, 45.93, 119.84, 103.77, 37.97, 45.9, 1.99, 125.88, 109.85]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.035, 2.036, 2.536, 3.036, 3.536, 4.537, 5.54, 7.04, 7.54, 8.041, 9.043, 10.545, 11.546, 12.546, 13.547, 15.049, 16.051, 17.052, 18.053, 19.554, 20.555, 21.555, 23.058, 24.059, 25.059, 26.06, 27.561, 28.562, 29.563, 31.065, 32.066, 33.068, 34.069, 35.57, 36.573, 37.575, 38.575, 40.078, 40.943]
    y-axis "Memory MiB" 0 --> 1000
    line [24.17, 77.29, 124.03, 143.76, 151.89, 180.7, 201.24, 236.14, 250.09, 231.1, 242.88, 230.95, 232.72, 212.62, 203.34, 188.79, 190.62, 189.16, 194.84, 207.85, 294.73, 315.8, 323.11, 374.98, 493.32, 221.26, 218.75, 226.7, 217.2, 226.4, 209.08, 207.71, 315.11, 358.63, 285.24, 223.68, 199.47, 234.64, 239.64, 0]
    line [22.24, 75.14, 121.9, 141.61, 149.76, 178.73, 199.1, 233.97, 247.92, 228.93, 240.71, 228.78, 230.55, 210.44, 201.17, 185.73, 188.45, 186.98, 192.67, 205.68, 292.57, 313.63, 320.94, 372.92, 491.14, 219.09, 216.99, 224.53, 215.03, 224.23, 206.92, 205.54, 312.94, 356.88, 283.06, 221.5, 197.29, 232.47, 237.51, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.034, 2.036, 3.538, 4.539, 5.54, 6.541, 7.543, 8.043, 9.044, 10.046, 11.047, 12.048, 13.048, 14.551, 15.552, 16.553, 17.554, 18.555, 20.058, 21.059, 22.06, 23.06, 23.562, 24.062, 25.063, 26.564, 27.566, 28.567, 29.567, 30.567, 32.07, 33.071, 34.072, 34.572, 35.072, 36.073, 37.574, 38.575]
    y-axis "CPU percent" 0 --> 200
    line [39.97, 107.85, 85.77, 141.83, 131.84, 109.83, 137.73, 143.9, 109.85, 85.82, 127.91, 13.98, 9.99, 113.87, 77.9, 35.94, 79.9, 43.97, 127.73, 99.94, 115.8, 99.97, 115.69, 139.94, 51.93, 91.92, 79.88, 19.99, 68.01, 15.99, 57.89, 81.91, 91.96, 2, 60.01, 39.98, 77.92, 139.73]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.034, 2.036, 3.538, 4.539, 5.54, 6.541, 7.543, 8.043, 9.044, 10.046, 11.047, 12.048, 13.048, 14.551, 15.552, 16.553, 17.554, 18.555, 20.058, 21.059, 22.06, 23.06, 23.562, 24.062, 25.063, 26.564, 27.566, 28.567, 29.567, 30.567, 32.07, 33.071, 34.072, 34.572, 35.072, 36.073, 37.574, 38.575, 39.221]
    y-axis "Memory MiB" 0 --> 500
    line [23.79, 119.41, 150.03, 188.84, 235.96, 223.94, 227.81, 244.92, 245.7, 231.46, 202.34, 234.14, 215.17, 174.53, 198.93, 200.93, 197.66, 224.03, 206.86, 241.78, 319.98, 333.53, 381.73, 431.99, 342.98, 225.66, 262.02, 225.95, 216.17, 216.61, 218.5, 236.7, 217.14, 214.38, 201.05, 220.69, 212.1, 219.32, 270.27, 0]
    line [22.02, 117.38, 147.99, 186.8, 234.43, 226.28, 225.73, 242.46, 243.74, 229.41, 200.26, 231.69, 213.08, 172.7, 196.87, 198.86, 195.71, 222.41, 204.77, 235.6, 317.9, 331.44, 379.64, 429.94, 340.89, 223.57, 259.95, 223.86, 214.08, 216.53, 216.42, 234.61, 215.06, 212.29, 198.97, 218.6, 209.98, 217.23, 269.7, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.91 s 19.96 s +0.04 s (+0.23%)
Estimated CPU 0.44 s 0.43 s -0.01 s (-2.26%)
Peak PSS 88.42 MiB 88.24 MiB -0.17 MiB (-0.20%)
Peak RSS 90.48 MiB 90.85 MiB +0.37 MiB (+0.41%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@github-actions

Copy link
Copy Markdown

Spider Bench A/B

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 5de83e3e761a → HEAD 1f9fc3c4b11d; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 179 / 240 -5 (-2.72%)
Contract fill 76.67% 74.58% -2.09 pp (-2.73%)
Sites with rows 38 / 48 37 / 48 -1 (-2.63%)
Sites meeting row contract 36 / 48 35 / 48 -1 (-2.78%)
Unexpected empty sites 10 11 +1 (+10.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 36; HTTP error + rows: 2; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 43.42 s 41.66 s -1.76 s (-4.05%)
Estimated CPU 34.23 s 33.80 s -0.43 s (-1.26%)
Peak PSS 460.50 MiB 466.29 MiB +5.79 MiB (+1.26%)
Peak RSS 462.46 MiB 468.22 MiB +5.76 MiB (+1.25%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 32 / 40 27 / 40 -5
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.035, 2.036, 2.537, 3.538, 4.038, 5.039, 6.04, 7.542, 8.543, 9.544, 11.046, 12.048, 13.549, 14.55, 15.551, 17.053, 18.054, 19.554, 20.555, 22.057, 23.059, 24.06, 25.061, 25.561, 26.563, 28.065, 29.066, 30.068, 31.568, 32.569, 34.07, 35.072, 36.575, 37.575, 38.577, 40.079, 41.079, 42.581]
    y-axis "CPU percent" 0 --> 200
    line [35.96, 107.86, 119.78, 103.88, 167.84, 153.88, 93.9, 102.05, 85.9, 79.86, 73.94, 111.82, 4, 2, 73.94, 91.88, 43.97, 68.01, 101.94, 99.8, 105.89, 101.9, 137.86, 117.9, 57.91, 133.75, 29.96, 29.92, 87.91, 16.01, 95.91, 53.92, 33.93, 32.01, 3.99, 29.96, 117.86, 111.77]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.035, 2.036, 2.537, 3.538, 4.038, 5.039, 6.04, 7.542, 8.543, 9.544, 11.046, 12.048, 13.549, 14.55, 15.551, 17.053, 18.054, 19.554, 20.555, 22.057, 23.059, 24.06, 25.061, 25.561, 26.563, 28.065, 29.066, 30.068, 31.568, 32.569, 34.07, 35.072, 36.575, 37.575, 38.577, 40.079, 41.079, 42.581, 43.42]
    y-axis "Memory MiB" 0 --> 500
    line [23.66, 116.85, 147.09, 182.64, 204.66, 225.83, 244.3, 217.04, 224.67, 214.78, 204.5, 230.67, 214.04, 179.01, 180.24, 196.15, 205.93, 194.55, 225.54, 206.54, 286.38, 331.45, 360.18, 462.46, 244.48, 219.14, 234.08, 221.65, 217.94, 219.72, 225.49, 267.92, 243.99, 207.59, 221.65, 207.93, 215.23, 231.8, 232.14, 0]
    line [21.95, 114.85, 145.08, 180.63, 202.59, 223.82, 242.28, 215.02, 222.65, 212.36, 202.49, 228.64, 211.8, 176.98, 178.21, 194.12, 203.97, 192.53, 223.5, 203.93, 284.45, 329.42, 358.19, 460.5, 242.45, 217.19, 232.05, 219.62, 215.91, 217.69, 223.46, 265.8, 241.96, 205.56, 219.62, 205.9, 213.2, 229.77, 230.11, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.037, 2.036, 2.537, 3.038, 3.538, 4.539, 6.041, 7.042, 8.042, 9.544, 10.546, 11.547, 13.049, 14.051, 15.052, 16.554, 17.555, 18.556, 20.058, 21.06, 22.061, 23.563, 24.565, 25.567, 26.568, 27.068, 28.069, 29.069, 30.572, 31.572, 32.574, 34.075, 35.077, 36.079, 37.582, 38.583, 39.583, 41.085]
    y-axis "CPU percent" 0 --> 200
    line [37.94, 112.03, 121.78, 99.95, 83.9, 122.02, 111.93, 147.76, 55.93, 127.93, 93.87, 111.87, 3.99, 5.98, 2, 61.93, 99.89, 73.95, 43.96, 65.92, 109.94, 97.8, 113.87, 101.89, 140.02, 127.8, 52.01, 113.92, 19.97, 42.02, 89.85, 21.97, 89.86, 83.82, 65.91, 2, 98.05, 122.03]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.037, 2.036, 2.537, 3.038, 3.538, 4.539, 6.041, 7.042, 8.042, 9.544, 10.546, 11.547, 13.049, 14.051, 15.052, 16.554, 17.555, 18.556, 20.058, 21.06, 22.061, 23.563, 24.565, 25.567, 26.568, 27.068, 28.069, 29.069, 30.572, 31.572, 32.574, 34.075, 35.077, 36.079, 37.582, 38.583, 39.583, 41.085, 41.661]
    y-axis "Memory MiB" 0 --> 500
    line [23.59, 123.45, 148.91, 178.1, 193.75, 188.79, 232.88, 218.07, 250.27, 232.01, 250.32, 228.7, 209.77, 192.13, 281.7, 223.13, 208.72, 215.91, 214.18, 199.31, 230.77, 206.2, 297.21, 326.29, 360.73, 468.22, 240.22, 218.86, 265.15, 220.52, 217.01, 222.87, 223.05, 265.07, 231.09, 220.32, 198.1, 202.54, 243.55, 0]
    line [21.94, 121.52, 146.97, 176.16, 191.54, 186.83, 230.9, 216.09, 248.38, 231.34, 248.4, 226.72, 207.8, 190.15, 279.72, 221.15, 206.74, 213.93, 212.2, 197.33, 228.79, 204.22, 295.31, 324.31, 358.9, 466.29, 238.24, 216.88, 263.17, 218.54, 215.17, 220.89, 221.07, 263.03, 229.11, 218.35, 196.12, 200.56, 241.6, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 20.07 s 20.00 s -0.07 s (-0.34%)
Estimated CPU 0.48 s 0.48 s -0.00 s (-0.21%)
Peak PSS 85.25 MiB 89.80 MiB +4.55 MiB (+5.34%)
Peak RSS 87.80 MiB 91.71 MiB +3.90 MiB (+4.44%)
Peak threads 19 18 -1 (-5.26%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is observational: fixture diagnostics and performance deltas never fail the PR. Investigate changes using the complete artifact and controlled repeated runs.

@ldm0
ldm0 force-pushed the layout-wpt-main branch from 9e6df3a to 8312510 Compare August 12, 2026 23:09
@github-actions

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Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor a7c1eb0b42ce → HEAD 8312510607be; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 179 / 240 179 / 240 0 (0.00%)
Contract fill 74.58% 74.58% 0.00 pp (0.00%)
Sites with rows 37 / 48 37 / 48 0 (0.00%)
Sites meeting row contract 35 / 48 35 / 48 0 (0.00%)
Unexpected empty sites 11 11 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 46.42 s 40.88 s -5.54 s (-11.93%)
Estimated CPU 31.30 s 33.50 s +2.20 s (+7.03%)
Peak PSS 438.24 MiB 418.54 MiB -19.69 MiB (-4.49%)
Peak RSS 440.63 MiB 420.98 MiB -19.66 MiB (-4.46%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.035, 1.536, 2.537, 3.538, 4.039, 4.539, 5.04, 6.542, 8.045, 9.047, 10.547, 11.549, 13.05, 14.052, 15.553, 17.055, 18.056, 19.557, 20.558, 22.06, 23.563, 24.564, 26.066, 27.067, 28.568, 29.569, 31.069, 32.572, 33.571, 35.073, 36.074, 37.576, 39.079, 40.08, 41.581, 42.583, 44.085, 45.086]
    y-axis "CPU percent" 0 --> 200
    line [37.97, 81.9, 121.79, 99.87, 115.86, 159.75, 129.94, 91.83, 97.83, 101.85, 125.82, 23.96, 0, 0, 2, 2, 87.96, 21.99, 2, 29.97, 11.97, 60, 51.95, 113.91, 107.95, 107.93, 136.06, 67.88, 100.06, 17.99, 39.9, 11.98, 79.94, 83.83, 9.99, 63.9, 133.63, 89.92]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.035, 1.536, 2.537, 3.538, 4.039, 4.539, 5.04, 6.542, 8.045, 9.047, 10.547, 11.549, 13.05, 14.052, 15.553, 17.055, 18.056, 19.557, 20.558, 22.06, 23.563, 24.564, 26.066, 27.067, 28.568, 29.569, 31.069, 32.572, 33.571, 35.073, 36.074, 37.576, 39.079, 40.08, 41.581, 42.583, 44.085, 45.086, 46.423]
    y-axis "Memory MiB" 0 --> 500
    line [23.63, 121.57, 135.84, 172.03, 196.04, 216.4, 238.95, 261.58, 248.01, 228.63, 239.79, 235.84, 209.02, 168.72, 167.57, 167.57, 176.79, 212.91, 208.5, 197.75, 180.32, 180.7, 178.07, 195.05, 216.38, 332.27, 335, 440.63, 211.65, 256.94, 209.62, 209.82, 198.29, 216.95, 216.45, 203.66, 214.64, 212.77, 228.29, 0]
    line [21.63, 119.26, 133.54, 169.73, 193.8, 214.1, 237.19, 259.26, 245.69, 226.31, 237.46, 233.23, 206.7, 166.39, 165.24, 165.24, 174.46, 209.97, 206.17, 195.43, 178, 178.37, 175.75, 192.95, 214, 329.86, 332.63, 438.24, 209.25, 254.52, 207.44, 207.42, 195.88, 214.54, 214.13, 201.26, 212.22, 210.36, 226.41, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.035, 2.036, 2.537, 3.038, 3.539, 4.54, 5.54, 7.042, 8.044, 9.045, 10.548, 11.55, 12.551, 13.552, 15.054, 15.554, 16.054, 17.056, 18.057, 19.558, 20.558, 21.56, 23.062, 24.064, 25.065, 26.066, 27.569, 28.569, 29.571, 31.073, 32.074, 33.074, 34.075, 35.577, 36.579, 37.581, 38.581, 40.084]
    y-axis "CPU percent" 0 --> 200
    line [39.96, 103.89, 125.77, 93.77, 103.77, 167.75, 160.08, 151.81, 109.82, 135.75, 129.79, 113.78, 65.9, 23.97, 41.89, 0, 4, 87.82, 39.97, 71.93, 125.94, 129.81, 113.94, 101.82, 99.85, 103.84, 145.7, 115.96, 15.98, 89.95, 47.92, 23.97, 118.05, 15.98, 63.88, 2, 97.93, 119.83]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.035, 2.036, 2.537, 3.038, 3.539, 4.54, 5.54, 7.042, 8.044, 9.045, 10.548, 11.55, 12.551, 13.552, 15.054, 15.554, 16.054, 17.056, 18.057, 19.558, 20.558, 21.56, 23.062, 24.064, 25.065, 26.066, 27.569, 28.569, 29.571, 31.073, 32.074, 33.074, 34.075, 35.577, 36.579, 37.581, 38.581, 40.084, 40.883]
    y-axis "Memory MiB" 0 --> 500
    line [23.89, 118.61, 150.57, 171.72, 177.09, 190.43, 224.31, 251.11, 260.61, 233.32, 239.7, 243.76, 221.44, 199.73, 192.66, 184.45, 179.54, 174.33, 176.68, 176.81, 220.55, 212.5, 237.02, 380.83, 362.67, 420.98, 230.78, 237.57, 229.3, 218.21, 219.03, 215.18, 220.65, 242.41, 211.89, 214.93, 184.61, 196.16, 245.57, 0]
    line [21.82, 116.24, 148.3, 169.3, 174.68, 188.02, 221.9, 248.67, 257.93, 230.09, 237.28, 241.33, 219.01, 197.3, 190.23, 182.02, 177.11, 171.9, 174.25, 174.38, 218.11, 210.07, 234.68, 378.41, 360.4, 418.54, 228.35, 235.14, 226.48, 215.78, 216.59, 212.74, 218.22, 239.98, 209.46, 212.5, 182.17, 193.72, 243.15, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.98 s 19.90 s -0.08 s (-0.38%)
Estimated CPU 0.43 s 0.44 s +0.01 s (+2.08%)
Peak PSS 87.13 MiB 86.97 MiB -0.16 MiB (-0.18%)
Peak RSS 89.79 MiB 89.36 MiB -0.43 MiB (-0.48%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is informational: site failures, missing benchmark reports, failed browser service runs, fixture diagnostics, timing, and performance deltas do not fail the workflow. Build, runner, and artifact infrastructure errors can still fail it.

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Sequential Navigation Soak A/B

✅ HEAD completed the 200-navigation resilience and memory observation.

One browser process, one target, and one CDP session navigate CSDN → SegmentFault → Huaban → example.com repeatedly. This run issued 200 Page.navigate commands per binary.

Common ancestor f85f2fa7a1 → HEAD 481d6f1896; benchmark order: base-first; workflow: success.

Session resilience

Metric Base HEAD
Attempted / planned 200 / 200 200 / 200
Direct observable pass 200 / 200 200 / 200
Failures / recovered 0 / 0 0 / 0
Recovery failures 0 0
Lifecycle order violations 0 0
Network order violations 0 0
Wall time 270.6 s 299.5 s

A public-page failure is reported separately from an unrecoverable session. The soak requires all navigation attempts, zero failed recovery, zero lifecycle/network ordering violations, and complete resource evidence.

Process-tree memory

Metric Base HEAD Δ
Boundary samples 200 200 0
Boundary RSS samples 200 200 0
Boundary PSS samples 200 200 0
Periodic peak RSS 232.6 MiB 225.0 MiB -7.6 MiB
Periodic peak PSS 229.3 MiB 222.6 MiB -6.7 MiB
RSS · first 10 avg 170.0 MiB 167.0 MiB -3.0 MiB
RSS · last 10 avg 158.8 MiB 122.7 MiB -36.1 MiB
RSS · last − first window -11.2 MiB -44.3 MiB -33.1 MiB
RSS · warm slope / 100 nav +1.1 MiB -12.8 MiB -13.9 MiB
PSS · first 10 avg 166.7 MiB 163.8 MiB -3.0 MiB
PSS · last 10 avg 155.6 MiB 121.1 MiB -34.5 MiB
PSS · last − first window -11.1 MiB -42.7 MiB -31.6 MiB
PSS · warm slope / 100 nav +0.6 MiB -12.0 MiB -12.6 MiB
Peak file descriptors 60 59 -1
Peak threads 31 31 0

HEAD memory by 50-navigation quarter

HEAD range Avg RSS Final RSS Peak RSS Avg PSS Final PSS Peak FD
1–50 160.2 MiB 149.7 MiB 220.0 MiB 157.0 MiB 146.8 MiB 53
51–100 158.4 MiB 143.4 MiB 193.2 MiB 155.1 MiB 139.7 MiB 53
101–150 162.3 MiB 151.8 MiB 223.5 MiB 159.0 MiB 148.8 MiB 54
151–200 141.0 MiB 107.0 MiB 219.1 MiB 138.7 MiB 105.4 MiB 50

Raw reports and per-navigation boundary samples: workflow run and full sequential-navigation-soak-results artifact.

Public-site timing and memory are observational. Use the A/B deltas and trend shape as evidence, not as a deterministic performance threshold.

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Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor a7c1eb0b42ce → HEAD a752734233c8; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 179 / 240 179 / 240 0 (0.00%)
Contract fill 74.58% 74.58% 0.00 pp (0.00%)
Sites with rows 37 / 48 37 / 48 0 (0.00%)
Sites meeting row contract 35 / 48 35 / 48 0 (0.00%)
Unexpected empty sites 11 11 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 42.11 s 37.89 s -4.22 s (-10.01%)
Estimated CPU 32.51 s 31.76 s -0.75 s (-2.32%)
Peak PSS 456.78 MiB 462.66 MiB +5.88 MiB (+1.29%)
Peak RSS 459.22 MiB 465.03 MiB +5.80 MiB (+1.26%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.038, 2.539, 3.541, 4.542, 6.045, 7.046, 8.546, 9.547, 10.548, 12.047, 13.049, 14.05, 15.551, 16.553, 17.555, 19.056, 20.057, 21.558, 22.559, 23.56, 24.061, 25.06, 26.061, 26.562, 27.063, 28.563, 29.564, 30.566, 32.068, 33.069, 34.07, 35.571, 36.572, 38.074, 39.075, 40.076, 41.577]
    y-axis "CPU percent" 0 --> 200
    line [39.94, 109.82, 103.8, 65.93, 139.65, 111.79, 139.98, 54, 57.89, 124.02, 0, 79.95, 39.96, 9.99, 4, 33.97, 55.92, 83.92, 110, 105.69, 99.89, 133.95, 133.94, 91.88, 145.75, 69.89, 17.97, 41.96, 89.89, 19.97, 107.89, 111.93, 41.95, 67.86, 77.92, 47.85, 41.96, 123.91]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.036, 2.038, 2.539, 3.541, 4.542, 6.045, 7.046, 8.546, 9.547, 10.548, 12.047, 13.049, 14.05, 15.551, 16.553, 17.555, 19.056, 20.057, 21.558, 22.559, 23.56, 24.061, 25.06, 26.061, 26.562, 27.063, 28.563, 29.564, 30.566, 32.068, 33.069, 34.07, 35.571, 36.572, 38.074, 39.075, 40.076, 41.577, 42.112]
    y-axis "Memory MiB" 0 --> 500
    line [23.68, 126.13, 149.5, 171.91, 182.92, 256.36, 219.93, 266.11, 208.61, 238.89, 253.57, 211.98, 191.4, 195.82, 190.68, 177.54, 181.87, 194.76, 211.58, 326.77, 340.67, 409, 459.22, 231.59, 221.6, 230.14, 261.39, 217.51, 216.11, 219.64, 222.6, 284.34, 346.21, 235.85, 233.95, 242.77, 216.26, 207.7, 253.93, 0]
    line [21.63, 123.68, 147.06, 169.47, 180.65, 253.92, 217.49, 263.67, 206.17, 236.46, 251.11, 209.5, 188.93, 193.12, 188.2, 175.06, 179.4, 192.61, 208.98, 324.29, 338.36, 406.53, 456.78, 229.11, 218.11, 227.66, 258.92, 215.03, 213.64, 217.09, 220.12, 280.18, 343.74, 233.37, 231.48, 240.29, 213.78, 205.29, 251.5, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 3.038, 4.038, 5.04, 5.54, 6.041, 6.542, 7.544, 8.545, 9.547, 10.547, 11.549, 12.55, 13.552, 14.553, 15.054, 16.056, 17.058, 18.06, 19.06, 20.062, 21.064, 22.065, 23.066, 24.568, 25.569, 26.571, 27.573, 28.574, 29.575, 30.577, 31.578, 32.579, 34.08, 35.081, 36.082, 37.083]
    y-axis "CPU percent" 0 --> 200
    line [37.97, 103.93, 96, 151.91, 145.88, 141.85, 103.88, 171.5, 75.9, 111.67, 127.83, 71.9, 63.93, 61.9, 5.99, 0, 3.99, 2, 113.73, 73.87, 72.03, 101.8, 109.91, 101.92, 137.79, 43.98, 127.8, 97.72, 21.96, 71.9, 3.99, 51.92, 139.9, 111.8, 61.99, 104.03, 23.97, 113.88]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.036, 2.037, 3.038, 4.038, 5.04, 5.54, 6.041, 6.542, 7.544, 8.545, 9.547, 10.547, 11.549, 12.55, 13.552, 14.553, 15.054, 16.056, 17.058, 18.06, 19.06, 20.062, 21.064, 22.065, 23.066, 24.568, 25.569, 26.571, 27.573, 28.574, 29.575, 30.577, 31.578, 32.579, 34.08, 35.081, 36.082, 37.083, 37.894]
    y-axis "Memory MiB" 0 --> 500
    line [24.07, 124.8, 152.12, 185.86, 217.77, 217.38, 225.14, 220.07, 239.56, 211.81, 236.61, 251.15, 222.77, 216.78, 187.6, 186.3, 176.41, 173.93, 173.48, 225.02, 207.7, 226.95, 297.46, 329.53, 377.76, 465.03, 208.52, 260.04, 224.48, 209.97, 213.95, 212.02, 225.14, 277.24, 245.48, 235.26, 242.29, 223.82, 245.53, 0]
    line [22.03, 122.5, 149.82, 182.69, 215.47, 215.01, 222.78, 217.71, 237.19, 210.15, 234.25, 248.81, 220.4, 214.42, 185.23, 183.97, 174.03, 171.54, 171.09, 222.64, 205.29, 226.09, 295.18, 327.14, 375.42, 462.66, 206.14, 258.02, 221.95, 207.59, 211.56, 209.64, 222.76, 274.86, 243.09, 232.87, 239.9, 221.4, 244.65, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.93 s 19.91 s -0.02 s (-0.10%)
Estimated CPU 0.44 s 0.42 s -0.02 s (-4.52%)
Peak PSS 87.90 MiB 88.88 MiB +0.98 MiB (+1.12%)
Peak RSS 90.21 MiB 91.30 MiB +1.09 MiB (+1.21%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is informational: site failures, missing benchmark reports, failed browser service runs, fixture diagnostics, timing, and performance deltas do not fail the workflow. Build, runner, and artifact infrastructure errors can still fail it.

@ldm0
ldm0 force-pushed the layout-wpt-main branch 4 times, most recently from ffaf1ca to 685c955 Compare August 13, 2026 05:17
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Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor d41bf8ff9b1d → HEAD 685c95567069; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 184 / 240 0 (0.00%)
Contract fill 76.67% 76.67% 0.00 pp (0.00%)
Sites with rows 38 / 48 38 / 48 0 (0.00%)
Sites meeting row contract 36 / 48 36 / 48 0 (0.00%)
Unexpected empty sites 10 10 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 36; HTTP error + rows: 2; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 44.16 s 46.28 s +2.12 s (+4.80%)
Estimated CPU 32.29 s 41.70 s +9.41 s (+29.13%)
Peak PSS 463.34 MiB 481.96 MiB +18.63 MiB (+4.02%)
Peak RSS 465.53 MiB 494.70 MiB +29.17 MiB (+6.27%)
Peak threads 27 28 +1 (+3.70%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 32 / 40 32 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.036, 2.538, 3.54, 4.542, 5.043, 5.543, 6.043, 7.546, 8.548, 10.05, 11.051, 12.052, 12.553, 13.555, 15.056, 16.058, 17.559, 18.56, 20.062, 21.063, 22.565, 23.566, 24.566, 26.069, 27.071, 28.573, 29.574, 31.074, 32.076, 33.577, 34.577, 36.079, 37.08, 38.583, 39.584, 41.086, 42.087, 43.588]
    y-axis "CPU percent" 0 --> 200
    line [25.98, 123.82, 97.84, 157.74, 129.88, 135.85, 135.9, 137.76, 55.91, 83.88, 129.82, 0, 3.99, 69.84, 79.95, 11.97, 2, 2, 6, 0, 79.94, 91.88, 100.06, 107.77, 137.72, 37.95, 121.92, 113.99, 11.98, 69.96, 43.95, 35.9, 121.96, 61.88, 2, 57.96, 31.98, 123.87]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.538, 3.54, 4.542, 5.043, 5.543, 6.043, 7.546, 8.548, 10.05, 11.051, 12.052, 12.553, 13.555, 15.056, 16.058, 17.559, 18.56, 20.062, 21.063, 22.565, 23.566, 24.566, 26.069, 27.071, 28.573, 29.574, 31.074, 32.076, 33.577, 34.577, 36.079, 37.08, 38.583, 39.584, 41.086, 42.087, 43.588, 44.163]
    y-axis "Memory MiB" 0 --> 500
    line [24, 122.14, 171.26, 191.54, 241.01, 249.95, 220.59, 222.89, 245.54, 224.57, 213.38, 218.87, 196.68, 172.42, 192.5, 199, 194.52, 191.28, 187.2, 189.35, 194.71, 206.71, 210.37, 284.78, 338.8, 465.53, 211, 247.39, 252.11, 230.46, 217.46, 218.41, 233.3, 299.36, 238.95, 219.59, 226.13, 214.92, 252.8, 0]
    line [22.06, 119.84, 169.08, 189.32, 238.26, 247.74, 218.39, 220.64, 243.35, 222.41, 211.18, 216.8, 194.47, 170.21, 190.29, 196.79, 192.31, 189.07, 184.99, 187.14, 192.5, 204.51, 208.45, 282.65, 336.82, 463.34, 208.8, 245.18, 249.91, 228.26, 215.26, 216.21, 230.63, 297.46, 236.75, 217.39, 223.93, 212.71, 250.11, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.037, 1.538, 2.54, 3.54, 4.041, 5.042, 6.044, 6.544, 8.046, 9.047, 10.547, 11.548, 13.05, 14.052, 15.554, 17.057, 18.058, 19.56, 20.562, 22.063, 23.565, 24.566, 26.068, 27.069, 28.57, 29.572, 31.073, 32.574, 33.575, 35.077, 36.079, 37.581, 39.082, 40.083, 41.585, 42.586, 44.088, 45.089]
    y-axis "CPU percent" 0 --> 200
    line [37.98, 109.93, 127.7, 121.96, 97.84, 147.87, 119.84, 181.78, 129.9, 163.78, 70.01, 79.91, 125.88, 87.84, 77.87, 107.72, 11.98, 103.89, 49.91, 123.95, 113.85, 137.97, 105.93, 141.76, 66, 127.84, 63.91, 76.05, 75.9, 75.92, 129.69, 115.94, 2, 0, 2, 53.92, 35.95, 111.85]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.036, 1.037, 1.538, 2.54, 3.54, 4.041, 5.042, 6.044, 6.544, 8.046, 9.047, 10.547, 11.548, 13.05, 14.052, 15.554, 17.057, 18.058, 19.56, 20.562, 22.063, 23.565, 24.566, 26.068, 27.069, 28.57, 29.572, 31.073, 32.574, 33.575, 35.077, 36.079, 37.581, 39.082, 40.083, 41.585, 42.586, 44.088, 45.089, 46.282]
    y-axis "Memory MiB" 0 --> 1000
    line [24.06, 119.34, 140.48, 149.9, 196.04, 192.04, 211.68, 233.67, 240.63, 214.88, 255.25, 226.99, 244.68, 258.1, 255.02, 242.75, 248.47, 225.69, 255.67, 223.56, 242.94, 352.16, 314.99, 354.61, 494.7, 211.78, 224.77, 216.98, 222.56, 209.11, 231.63, 352.8, 230.55, 215.76, 213.27, 220.31, 217.72, 200.92, 229.97, 0]
    line [22.13, 117.15, 138.29, 147.71, 193.26, 189.82, 209.46, 231.45, 238.39, 212.63, 253, 224.8, 242.43, 255.86, 252.74, 240.61, 246.22, 223.44, 253.43, 221.32, 240.77, 349.89, 312.72, 352.56, 481.96, 209.51, 226.35, 214.71, 220.29, 206.83, 229.36, 350.52, 225.54, 213.5, 211, 218.06, 215.46, 198.48, 227.48, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 20.07 s 20.01 s -0.05 s (-0.27%)
Estimated CPU 0.47 s 0.46 s -0.01 s (-2.33%)
Peak PSS 87.80 MiB 88.65 MiB +0.85 MiB (+0.97%)
Peak RSS 90.16 MiB 90.79 MiB +0.63 MiB (+0.69%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is informational: site failures, missing benchmark reports, failed browser service runs, fixture diagnostics, timing, and performance deltas do not fail the workflow. Build, runner, and artifact infrastructure errors can still fail it.

@ldm0
ldm0 force-pushed the layout-wpt-main branch 2 times, most recently from 67820bb to 654d9d3 Compare August 13, 2026 05:49
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Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 184 / 240 rows; 38 / 48 sites produced rows; 10 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 48742bb65765 → HEAD 654d9d379b3c; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 184 / 240 184 / 240 0 (0.00%)
Contract fill 76.67% 76.67% 0.00 pp (0.00%)
Sites with rows 38 / 48 38 / 48 0 (0.00%)
Sites meeting row contract 36 / 48 36 / 48 0 (0.00%)
Unexpected empty sites 10 10 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 36; HTTP error + rows: 2; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 37; HTTP error + rows: 1; empty: 6; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 48.11 s 39.83 s -8.27 s (-17.20%)
Estimated CPU 35.61 s 32.55 s -3.06 s (-8.58%)
Peak PSS 467.09 MiB 447.85 MiB -19.25 MiB (-4.12%)
Peak RSS 469.38 MiB 450.03 MiB -19.35 MiB (-4.12%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 32 / 40 32 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.035, 1.536, 2.537, 3.038, 4.04, 5.543, 7.044, 8.546, 9.547, 11.051, 12.554, 14.055, 15.057, 16.559, 18.062, 19.563, 21.065, 22.065, 23.567, 25.067, 26.567, 27.567, 28.068, 29.069, 30.572, 32.072, 33.572, 34.573, 36.074, 37.579, 39.084, 40.088, 41.588, 43.091, 44.592, 45.594, 47.095, 48.095]
    y-axis "CPU percent" 0 --> 200
    line [61.95, 61.92, 3.99, 0, 109.84, 67.83, 105.87, 101.83, 161.77, 33.99, 127.84, 139.94, 53.95, 7.97, 59.92, 13.99, 17.99, 117.93, 105.93, 111.89, 109.99, 101.98, 121.86, 129.92, 89.95, 126, 18.01, 73.9, 9.99, 0, 117.85, 99.85, 50.02, 55.9, 141.8, 17.97, 163.75, 59.97]
Loading
xychart-beta
    title "Base memory: RSS"
    x-axis "Elapsed seconds" [0.035, 1.035, 1.536, 2.537, 3.038, 4.04, 5.543, 7.044, 8.546, 9.547, 11.051, 12.554, 14.055, 15.057, 16.559, 18.062, 19.563, 21.065, 22.065, 23.567, 25.067, 26.567, 27.567, 28.068, 29.069, 30.572, 32.072, 33.572, 34.573, 36.074, 37.579, 39.084, 40.088, 41.588, 43.091, 44.592, 45.594, 47.095, 48.095, 48.109]
    y-axis "Memory MiB" 0 --> 500
    line [23.91, 122.35, 136.13, 129.91, 129.91, 150.91, 187.45, 244.31, 216.38, 250.13, 235.24, 232.3, 247.76, 202.46, 187.88, 202.79, 190.52, 182.83, 229.89, 202.7, 231.81, 303.98, 380.5, 469.38, 230.41, 230.98, 237.7, 210.04, 209.24, 216.92, 192.21, 298.96, 356.62, 252.21, 233.14, 240.07, 214.9, 291.62, 0, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.037, 3.038, 3.538, 4.038, 4.539, 5.54, 6.541, 8.043, 9.046, 10.047, 11.049, 12.051, 13.553, 14.555, 15.556, 16.557, 18.06, 19.062, 20.064, 21.065, 22.067, 23.068, 23.568, 24.569, 25.57, 26.572, 28.072, 29.074, 30.076, 31.078, 32.08, 33.58, 34.58, 35.58, 36.582, 38.085, 39.087]
    y-axis "CPU percent" 0 --> 200
    line [57.84, 81.9, 109.87, 93.97, 126.02, 147.88, 73.89, 107.87, 163.81, 103.84, 107.89, 101.83, 97.77, 71.9, 101.75, 13.98, 55.93, 75.93, 141.77, 99.8, 115.89, 101.7, 135.94, 131.92, 80, 113.97, 107.68, 33.99, 77.86, 5.99, 43.9, 97.78, 12, 8, 0, 0, 27.92, 117.65]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.034, 1.036, 2.037, 3.038, 3.538, 4.038, 4.539, 5.54, 6.541, 8.043, 9.046, 10.047, 11.049, 12.051, 13.553, 14.555, 15.556, 16.557, 18.06, 19.062, 20.064, 21.065, 22.067, 23.068, 23.568, 24.569, 25.57, 26.572, 28.072, 29.074, 30.076, 31.078, 32.08, 33.58, 34.58, 35.58, 36.582, 38.085, 39.087, 39.834]
    y-axis "Memory MiB" 0 --> 500
    line [23.21, 123.23, 147.67, 178.75, 174.56, 190.19, 226.8, 241.32, 217.79, 253.25, 225.4, 231.28, 231.71, 216.67, 213.08, 219.21, 198.83, 198, 210.26, 235.13, 296.6, 313.08, 379.71, 450.03, 243.04, 218.98, 261.68, 262, 244, 246.39, 244.45, 246.59, 254.89, 237.02, 246.25, 242.9, 242.18, 208.5, 246.55, 0]
    line [21.26, 121, 145.47, 176.58, 172.38, 188.03, 224.63, 239.12, 215.59, 251.05, 223.2, 229.08, 229.43, 214.48, 210.89, 217.01, 196.62, 195.87, 208.05, 232.93, 294.48, 310.87, 377.54, 447.85, 240.83, 216.78, 259.51, 259.88, 241.8, 244.2, 242.27, 244.38, 252.68, 234.82, 244.04, 240.7, 239.98, 206.31, 244.35, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.91 s 19.92 s +0.00 s (+0.01%)
Estimated CPU 0.45 s 0.42 s -0.03 s (-6.64%)
Peak PSS 88.10 MiB 88.40 MiB +0.30 MiB (+0.34%)
Peak RSS 90.06 MiB 90.56 MiB +0.50 MiB (+0.56%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is informational: site failures, missing benchmark reports, failed browser service runs, fixture diagnostics, timing, and performance deltas do not fail the workflow. Build, runner, and artifact infrastructure errors can still fail it.

@ldm0
ldm0 force-pushed the layout-wpt-main branch from 654d9d3 to 7588b94 Compare August 13, 2026 07:32
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Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 62782add590a → HEAD 7588b94e6521; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 179 / 240 179 / 240 0 (0.00%)
Contract fill 74.58% 74.58% 0.00 pp (0.00%)
Sites with rows 37 / 48 37 / 48 0 (0.00%)
Sites meeting row contract 35 / 48 35 / 48 0 (0.00%)
Unexpected empty sites 11 11 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 35; HTTP error + rows: 2; empty: 8; HTTP error + empty: 1; snapshot error + empty: 2 extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 51.39 s 43.88 s -7.51 s (-14.61%)
Estimated CPU 38.65 s 36.27 s -2.38 s (-6.15%)
Peak PSS 453.86 MiB 420.54 MiB -33.32 MiB (-7.34%)
Peak RSS 456.12 MiB 422.62 MiB -33.50 MiB (-7.35%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.55, 2.551, 3.051, 4.552, 5.553, 7.055, 8.579, 10.154, 11.655, 13.158, 14.661, 15.663, 17.164, 17.665, 18.667, 20.169, 21.671, 23.173, 24.674, 26.175, 27.176, 28.678, 30.181, 31.683, 33.185, 34.685, 36.187, 37.189, 38.69, 40.193, 41.695, 43.196, 44.698, 46.201, 47.202, 48.702, 50.204, 50.703]
    y-axis "CPU percent" 0 --> 200
    line [83.88, 127.8, 103.99, 131.84, 153.79, 91.88, 13.97, 111.38, 118.09, 140.02, 1.99, 4, 2, 0, 75.9, 107.86, 49.87, 61.92, 117.85, 99.8, 125.85, 111.77, 141.77, 77.96, 136.02, 118.02, 75.87, 19.94, 78.03, 103.83, 4, 37.97, 2, 6, 5.99, 39.96, 123.9, 160.06]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.049, 1.55, 2.551, 3.051, 4.552, 5.553, 7.055, 8.579, 10.154, 11.655, 13.158, 14.661, 15.663, 17.164, 17.665, 18.667, 20.169, 21.671, 23.173, 24.674, 26.175, 27.176, 28.678, 30.181, 31.683, 33.185, 34.685, 36.187, 37.189, 38.69, 40.193, 41.695, 43.196, 44.698, 46.201, 47.202, 48.702, 50.204, 50.703, 51.39]
    y-axis "Memory MiB" 0 --> 500
    line [21.29, 131.78, 178.08, 189.39, 222.03, 218.06, 237.32, 222.92, 213.86, 235.54, 251.97, 207.82, 207.02, 207.42, 206.36, 220.13, 224.21, 196.32, 222.89, 207.14, 299.86, 300.57, 333.39, 456.12, 232.88, 239, 238.27, 206.29, 197.54, 216.57, 337.59, 214.08, 213.48, 195.79, 192.71, 199.69, 187.73, 234.85, 280.84, 0]
    line [19.33, 129.6, 175.9, 187.2, 219.32, 215.67, 234.85, 220.44, 211.37, 233.08, 249.61, 205.63, 204.82, 205.22, 204.16, 217.84, 222.02, 195.65, 220.69, 204.94, 297.77, 298.37, 331.19, 453.86, 230.58, 236.81, 236.09, 204.11, 195.36, 214.39, 335.41, 211.9, 211.3, 193.61, 190.53, 197.69, 185.55, 232.67, 278.67, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.036, 2.036, 2.536, 3.537, 4.539, 5.039, 6.04, 7.543, 8.544, 10.045, 11.047, 12.049, 13.051, 13.552, 14.554, 16.057, 17.057, 18.558, 19.559, 21.061, 22.062, 23.063, 24.566, 25.568, 27.07, 28.071, 29.572, 30.572, 32.073, 33.073, 34.074, 35.576, 36.577, 38.079, 39.081, 40.582, 41.584, 43.086]
    y-axis "CPU percent" 0 --> 200
    line [53.93, 0, 34, 121.94, 83.87, 133.83, 127.86, 117.83, 113.98, 0, 61.92, 95.83, 147.68, 103.78, 73.86, 3.99, 2, 64, 23.99, 55.92, 37.94, 123.8, 101.81, 99.76, 99.69, 141.88, 42.01, 130.01, 33.97, 89.88, 53.93, 47.91, 109.9, 129.91, 71.84, 47.98, 123.77, 117.8]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.036, 2.036, 2.536, 3.537, 4.539, 5.039, 6.04, 7.543, 8.544, 10.045, 11.047, 12.049, 13.051, 13.552, 14.554, 16.057, 17.057, 18.558, 19.559, 21.061, 22.062, 23.063, 24.566, 25.568, 27.07, 28.071, 29.572, 30.572, 32.073, 33.073, 34.074, 35.576, 36.577, 38.079, 39.081, 40.582, 41.584, 43.086, 43.879]
    y-axis "Memory MiB" 0 --> 500
    line [21.74, 118.38, 128.87, 136.96, 181.32, 193.21, 209.81, 239.14, 216.59, 229.32, 203.95, 196.94, 243.23, 263.24, 229.66, 223.48, 222.88, 219.41, 231.71, 209.74, 204.03, 232.71, 218.1, 223.88, 302.76, 351.99, 422.62, 204.3, 239.67, 211.96, 203.68, 195.88, 203, 320.95, 238.36, 240.82, 214.09, 203.8, 239.18, 0]
    line [19.9, 116.26, 126.75, 134.83, 178.91, 191.09, 207.69, 237.04, 221.89, 227.19, 201.83, 194.84, 241.03, 261.11, 227.52, 221.34, 220.74, 217.27, 229.57, 207.6, 201.89, 217.3, 215.84, 221.73, 300.75, 350.11, 420.54, 202.17, 237.54, 209.82, 201.36, 193.73, 200.86, 319.09, 236.22, 238.67, 211.86, 201.58, 237.01, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.98 s 19.93 s -0.05 s (-0.27%)
Estimated CPU 0.57 s 0.43 s -0.14 s (-24.34%)
Peak PSS 88.39 MiB 83.16 MiB -5.24 MiB (-5.92%)
Peak RSS 90.46 MiB 85.30 MiB -5.16 MiB (-5.71%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is informational: site failures, missing benchmark reports, failed browser service runs, fixture diagnostics, timing, and performance deltas do not fail the workflow. Build, runner, and artifact infrastructure errors can still fail it.

@github-actions

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Spider Bench A/B

✅ All benchmark browser service runs completed; results are informational.

Public HEAD: 179 / 240 rows; 37 / 48 sites produced rows; 11 unexpected empty sites.

✅ Deterministic fixture diagnostic is clean.

Common ancestor 62782add590a → HEAD dbddb66116ba; benchmark order: base-first; workflow: success.

Public 48-site run · informational

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 179 / 240 179 / 240 0 (0.00%)
Contract fill 74.58% 74.58% 0.00 pp (0.00%)
Sites with rows 37 / 48 37 / 48 0 (0.00%)
Sites meeting row contract 35 / 48 35 / 48 0 (0.00%)
Unexpected empty sites 11 11 0 (0.00%)
Partial-row sites 2 2 0 (0.00%)
Site outcomes extracted: 35; HTTP error + rows: 2; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3 extracted: 36; HTTP error + rows: 1; empty: 7; HTTP error + empty: 1; snapshot error + empty: 3
Observed duration 45.44 s 39.82 s -5.62 s (-12.37%)
Estimated CPU 35.48 s 34.98 s -0.51 s (-1.43%)
Peak PSS 446.84 MiB 454.40 MiB +7.55 MiB (+1.69%)
Peak RSS 449.19 MiB 456.02 MiB +6.84 MiB (+1.52%)
Peak threads 27 27 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0
Category rows Base HEAD Δ
news 35 / 40 35 / 40 0
stocks 20 / 40 20 / 40 0
tech 35 / 40 35 / 40 0
sports 27 / 40 27 / 40 0
games 37 / 40 37 / 40 0
life 25 / 40 25 / 40 0

Public-site content, timing, and memory are noisy. This single A/B run reports evidence only; site outcome counts explain missing rows without treating them as a deterministic regression.

CPU and memory timelines

These are bounded 40-point views of the same complete process-tree samples used by the HTML report. CPU uses 100% per occupied logical core; memory lines are RSS first and PSS second when complete PSS samples are available.

Base

xychart-beta
    title "Base CPU"
    x-axis "Elapsed seconds" [1.037, 1.537, 2.538, 4.039, 5.041, 6.543, 7.545, 9.047, 10.049, 11.549, 12.551, 14.052, 15.053, 16.556, 17.557, 19.058, 20.059, 21.561, 23.061, 24.063, 25.564, 26.565, 28.067, 28.568, 29.068, 30.57, 31.572, 32.073, 33.073, 34.075, 35.577, 36.578, 38.081, 39.081, 40.582, 41.583, 43.084, 44.086]
    y-axis "CPU percent" 0 --> 200
    line [47.86, 81.9, 112.04, 71.98, 97.79, 0, 117.87, 93.91, 139.82, 109.96, 81.93, 102.02, 105.78, 12, 19.98, 49.99, 27.95, 79.89, 52.03, 121.71, 97.99, 113.9, 115.85, 125.88, 115.89, 101.86, 131.76, 157.63, 95.95, 75.9, 7.99, 15.98, 55.89, 88.05, 0, 0, 55.99, 75.9]
Loading
xychart-beta
    title "Base memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.035, 1.037, 1.537, 2.538, 4.039, 5.041, 6.543, 7.545, 9.047, 10.049, 11.549, 12.551, 14.052, 15.053, 16.556, 17.557, 19.058, 20.059, 21.561, 23.061, 24.063, 25.564, 26.565, 28.067, 28.568, 29.068, 30.57, 31.572, 32.073, 33.073, 34.075, 35.577, 36.578, 38.081, 39.081, 40.582, 41.583, 43.084, 44.086, 45.441]
    y-axis "Memory MiB" 0 --> 500
    line [23.49, 122.09, 136.15, 152.03, 179.06, 221.11, 222.99, 250.08, 221.65, 214.19, 202.49, 206.45, 263.9, 255.93, 237.71, 231, 234.89, 220.59, 254.43, 221.98, 215.25, 294.8, 319.59, 428.42, 449.19, 238.71, 216.36, 284.17, 283.75, 230.48, 227.86, 207.24, 204.21, 222.8, 223.1, 203.61, 212, 205.07, 207.79, 0]
    line [21.4, 119.67, 133.74, 149.63, 176.67, 218.69, 220.57, 247.64, 219.36, 211.75, 200.06, 204, 261.45, 253.46, 235.26, 229.08, 232.58, 218.14, 252.02, 219.57, 212.84, 292.39, 317.17, 426.02, 446.84, 236.28, 214.09, 282.26, 281.33, 228.01, 225.49, 204.88, 201.84, 216.94, 220.7, 201.19, 209.48, 202.56, 205.27, 0]
Loading

HEAD

xychart-beta
    title "HEAD CPU"
    x-axis "Elapsed seconds" [1.041, 2.043, 3.043, 3.544, 4.545, 5.547, 6.548, 8.049, 9.052, 10.054, 11.055, 12.055, 13.557, 14.558, 15.559, 16.56, 18.062, 19.064, 20.066, 21.067, 22.069, 23.57, 24.572, 25.073, 25.574, 26.576, 28.077, 29.078, 30.079, 31.081, 32.082, 33.585, 34.586, 35.587, 36.087, 36.588, 38.09, 39.091]
    y-axis "CPU percent" 0 --> 200
    line [45.96, 65.9, 111.99, 99.92, 169.71, 123.71, 129.83, 165.7, 103.79, 129.61, 117.92, 94.01, 69.94, 41.95, 8, 43.96, 19.97, 89.9, 93.87, 105.8, 125.77, 103.84, 113.93, 133.9, 115.74, 47.9, 119.8, 43.93, 71.92, 43.93, 37.95, 69.86, 15.98, 57.94, 0, 61.95, 39.96, 111.84]
Loading
xychart-beta
    title "HEAD memory: RSS then PSS"
    x-axis "Elapsed seconds" [0.041, 1.041, 2.043, 3.043, 3.544, 4.545, 5.547, 6.548, 8.049, 9.052, 10.054, 11.055, 12.055, 13.557, 14.558, 15.559, 16.56, 18.062, 19.064, 20.066, 21.067, 22.069, 23.57, 24.572, 25.073, 25.574, 26.576, 28.077, 29.078, 30.079, 31.081, 32.082, 33.585, 34.586, 35.587, 36.087, 36.588, 38.09, 39.091, 39.82]
    y-axis "Memory MiB" 0 --> 500
    line [23.16, 123.73, 145.43, 189.83, 188.95, 234.72, 235.79, 220.95, 238.29, 225.46, 240.13, 249.63, 230.43, 208.48, 192.05, 189.72, 184.95, 196.4, 202, 231.47, 322.73, 318.09, 347.92, 417.43, 456.02, 227.54, 213.1, 248.91, 217.09, 208.5, 200.74, 213.09, 204.89, 191.31, 200.14, 199.32, 186.49, 199.9, 246.52, 0]
    line [21.05, 121.28, 142.98, 187.44, 186.5, 232.27, 233.33, 218.51, 235.69, 216.9, 237.7, 247.17, 227.96, 206.02, 189.59, 187.26, 182.48, 193.94, 199.54, 229.52, 320.36, 315.63, 345.71, 415.47, 454.4, 225.08, 210.64, 246.45, 214.64, 206.03, 198.28, 210.63, 202.77, 188.85, 197.68, 196.86, 184.03, 197.44, 244.06, 0]
Loading

Deterministic fixture · diagnostic

The fixture exercises 15 routes: 8 are expected to emit rows and 7 intentionally exercise empty, loading, or timeout behavior.

Metric Base HEAD Δ
Run status success success
Extracted rows / contract 40 / 40 40 / 40 0 (0.00%)
Contract fill 100.00% 100.00% 0.00 pp (0.00%)
Sites with rows 8 / 15 8 / 15 0 (0.00%)
Sites meeting row contract 15 / 15 15 / 15 0 (0.00%)
Unexpected empty sites 0 0 0
Partial-row sites 0 0 0
Site outcomes extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4 extracted: 7; HTTP error + rows: 1; empty: 3; timeout + empty: 4
Observed duration 19.93 s 19.93 s -0.00 s (0.00%)
Estimated CPU 0.47 s 0.44 s -0.03 s (-6.36%)
Peak PSS 88.48 MiB 88.49 MiB +0.01 MiB (+0.01%)
Peak RSS 90.80 MiB 90.79 MiB -0.02 MiB (-0.02%)
Peak threads 18 18 0 (0.00%)
Mismatched sites 0 0 0
Timeout with items 0 0 0

Full HTML, JSON, CSV, logs, and page snapshots: workflow run and full spider-bench-results artifact.

Spider Bench is informational: site failures, missing benchmark reports, failed browser service runs, fixture diagnostics, timing, and performance deltas do not fail the workflow. Build, runner, and artifact infrastructure errors can still fail it.

@ldm0
ldm0 force-pushed the layout-wpt-main branch 7 times, most recently from c5129c9 to 4a0d45a Compare August 30, 2026 20:09
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github-actions Bot commented Aug 30, 2026

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CI Regression Report

Source CI run · source state at render: in_progress · artifacts: 5/5

Check Status Signal
Release regression HEAD/base failures 0/0; raw binary 0.00%
Frontend differential 1,020/1,020 cases matched; 0 issues
Agent episodes 8/8 Moli episodes passed; 0 failures
Runtime/CDP contracts 26 contract cases; 0 failures
CDP smoke 43/43 groups passed; 454 scenarios
Release regression — ✅ HEAD/base failures 0/0; raw binary 0.00%

Package and image size

Metric Base HEAD Delta Delta %
Raw binary 149.09 MiB 149.09 MiB 0 B 0.00%
Stripped binary 103.35 MiB 103.35 MiB 0 B 0.00%
gzip binary 50.15 MiB 50.15 MiB +208 B +0.000396%
Rootfs 155.99 MiB 155.99 MiB 0 B 0.00%
gzip rootfs 58.97 MiB 58.97 MiB −1.26 KiB −0.002085%

Startup latency and PSS

Case Base p50 HEAD p50 Delta Base PSS HEAD PSS Delta
Serve ready 27.12 ms 30.48 ms +3.35 ms 3.89 MiB 9.15 MiB +5.26 MiB
CDP first page 51.33 ms 55.71 ms +4.37 ms 4.16 MiB 4.65 MiB +503.00 KiB
CDP warm page 13.19 ms 15.88 ms +2.69 ms 49.16 MiB 48.18 MiB −1004.50 KiB
CLI about:blank 13.91 ms 20.47 ms +6.57 ms 3.88 MiB 4.69 MiB +837.00 KiB
CLI local JS 35.05 ms 17.04 ms −18.01 ms 5.17 MiB 3.47 MiB −1.70 MiB

Concurrency matrix

Concurrency Base p50 HEAD p50 Delta Base PSS HEAD PSS Delta HEAD failures Unstable B/H
1 16.40 ms 15.45 ms −0.96 ms 903.00 KiB 849.00 KiB −54.00 KiB 0 0/0
5 19.09 ms 21.58 ms +2.49 ms 12.81 MiB 12.37 MiB −452.50 KiB 0 0/0
10 19.05 ms 19.28 ms +0.24 ms 17.79 MiB 19.90 MiB +2.12 MiB 0 0/0
25 20.01 ms 19.68 ms −0.33 ms 17.92 MiB 13.19 MiB −4.73 MiB 0 0/0
100 19.77 ms 19.97 ms +0.20 ms 22.52 MiB 12.33 MiB −10.19 MiB 0 0/0
Frontend differential — ✅ 1,020/1,020 cases matched; 0 issues
Match DOM mismatch Diagnostic mismatch Moli error Reference error Infrastructure error Mismatched frames Duration
1,020 0 0 0 0 0 0 6m 24.02s
Agent episodes · Moli vs Chromium — ✅ 8/8 Moli episodes passed; 0 failures
Fast contract Episodes Passed Assertions Ready p50 Episode p50
Moli 8 8 47/47 3.76 ms 24.51 ms
Chromium 8 8 47/47 251.45 ms 80.17 ms
Operation p50 Chromium Moli Delta Delta %
navigate 38.26 ms 7.01 ms −31.25 ms −81.68%
observe 0.73 ms 0.79 ms +0.06 ms +7.99%
fill 2.63 ms 3.03 ms +0.40 ms +15.05%
click 4.24 ms 3.32 ms −0.92 ms −21.61%
Idle-resource episode Peak RSS Peak PSS Average CPU Peak CPU Peak processes Sampler
Moli 63.48 MiB 60.51 MiB 0.71% 10.01% 1
Chromium 1285.66 MiB 388.40 MiB 1.81% 91.95% 13 ⚠️ PSS partial
Runtime and CDP session contracts — ✅ 26 contract cases; 0 failures
Suite Cases Failures Median case p50 Median case p95 Median peak PSS p50
Synthetic fetch 13 0 16.85 ms 17.21 ms 911.00 KiB
Long-lived CDP session 13 0 19.40 ms 19.80 ms
CDP smoke — ✅ 43/43 groups passed; 454 scenarios

Workers: 4 · cumulative group time: 120.89 s · failed groups: 0

Slowest group Scenarios Duration Status
chromium-cdp 56 12.57 s
multi-page 45 10.71 s
dom-input 26 10.20 s
layout-screenshot 5 7.42 s
core 35 6.64 s

All artifact fields are parsed by the trusted default-branch renderer; missing or invalid inputs remain visible as unavailable.

@ldm0
ldm0 force-pushed the layout-wpt-main branch 18 times, most recently from ab00211 to 928836c Compare September 2, 2026 20:15
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