optimize_pickling

Runtime and space tests for Pickle in Python 3.

Create a virtuel environment:

python3 -m venv env
source env/bin/activate
pip install numpy

Run the tests:

python test_pickle.py

The effect of three parameters is tested:

1. zip method
   • 0: none
   • 1: gzip
   • 2: bz2
2. pickle protocol
   • 0: lowest (default)
   • 1: highest
3. optimize pickle string
   • 0: none
   • 1: pickletools.optimize

The output is saved in results.csv.

Results:

method	save in s	load in s	size in bytes
0-0-0	5.7	3.4	96889k
0-0-1	50.7	1.8	71000k
0-1-0	1.3	1.1	35007k
0-1-1	28.7	0.9	33007k
1-0-0	8.3	3.3	7706k
1-0-1	50.7	2.0	241k
1-1-0	1.4	1.1	108k
1-1-1	28.8	0.9	102k
2-0-0	14.8	4.9	4565k
2-0-1	68.4	2.4	18k
2-1-0	10.1	1.5	11k
2-1-1	35.7	1.3	10k