Add tx centrifuge load generator support - #146
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tx-centrifuge lives on a different cardano-node branch than the one providing cardano-node/cardano-cli, so pin it as a separate flake input and expose its binary in the venv dev shell (next to tx-generator).
tx-centrifuge is a higher-load, UTxO-reusing successor to tx-generator. Enabled via ENABLE_TX_CENTRIFUGE on the fast testnets (not supported in the slow script). It reuses the genesis-utxo2 key as a genesis_utxo_keys fund, targets a single node so the serial on_build chain stays in one mempool, and pins its trace severity to Info to avoid Debug spam. Mutually exclusive with tx-generator. The shared TX_TPS variable now sets the rate for both generators (tx-generator's rate was previously fixed).
wait_for_epoch reads the epoch of the chain tip, which lags wall-clock when blocks are sparse. On leios_fast (activeSlotsCoeff 0.05, 1s slots) the first block of the target epoch could take longer than the fixed 50s grace to be forged, causing spurious "Unexpected epoch" failures. Derive the grace from the expected block interval (slotLength / activeSlotsCoeff) instead, floored at the previous 50s so denser clusters are unaffected.
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Adds support for
tx-centrifuge(a higher-load, UTxO-reusing successor totx-generator) to the fast testnets, mirroring the existingtx-generatorintegration. Not supported in the slow script.
Changes
tx-centrifugefrom cardano-nodebench/leios-11.0.1as aseparate input and expose it in the venv dev shell.
ENABLE_TX_CENTRIFUGE. Reuses thegenesis-utxo2key as a
genesis_utxo_keysfund, targets a single node (so the serialon_buildchain stays in one mempool and propagates out), and pins traceseverity to
Info. Mutually exclusive withtx-generator.(tx-generator's rate was previously hardcoded).
wait_for_epoch's poll window to block density(
slotLength / activeSlotsCoeff) to stop spurious "Unexpected epoch"failures on sparse-block clusters like
leios_fast.Notes
protocolParametersFileis populated (viasave_protocol_params) forforward-compat; the current tool doesn't read it yet.
Testing
Verified on a running
leios_fastcluster: mempool fills, ~67% tx acceptance,leios.dbgrows (EBs produced), tx-centrifuge submits at the configured TPS.