[issue43889] Pickle performance regression in 3.10

[Ken Jin]

Ken Jin <kenjin4096 at gmail.com> added the comment:

I'm unable to reproduce the regression locally with pyperformance. Additionally, the links on speed.python.org show that the results returned to normal after a week (again seemingly without any commit to cause such a change).

I'm closing this bug as it doesn't seem related to the code in cpython itself. Thanks everyone.

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$ pyperf compare_to 2021-04-13_23-59-master-11159d2c9d66.json.gz 2021-04-14_23-03-master-3fc65b97d09f.json.gz  
pickle_dict: Mean +- std dev: [2021-04-13_23-59-master-11159d2c9d66] 72.0 us +- 1.6 us -> [2021-04-14_23-03-master-3fc65b97d09f] 73.1 us +- 0.9 us: 1.02x slower
pickle_list: Mean +- std dev: [2021-04-13_23-59-master-11159d2c9d66] 11.1 us +- 0.1 us -> [2021-04-14_23-03-master-3fc65b97d09f] 11.0 us +- 0.1 us: 1.01x faster

Benchmark hidden because not significant (1): pickle

Geometric mean: 1.00x slower

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resolution:  -> works for me
stage:  -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue43889>
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