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test_peg_generator is extremely slow #90734
Description
Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.
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GitHub fields:
assignee = 'https://github.com/gpshead'
closed_at = <Date 2022-02-03.08:25:22.004>
created_at = <Date 2022-01-29.20:31:42.298>
labels = ['tests', '3.9', '3.10', '3.11']
title = 'test_peg_generator is extremely slow'
updated_at = <Date 2022-04-06.22:22:07.128>
user = 'https://github.com/gpshead'bugs.python.org fields:
activity = <Date 2022-04-06.22:22:07.128>
actor = 'jkloth'
assignee = 'gregory.p.smith'
closed = True
closed_date = <Date 2022-02-03.08:25:22.004>
closer = 'gregory.p.smith'
components = ['Tests']
creation = <Date 2022-01-29.20:31:42.298>
creator = 'gregory.p.smith'
dependencies = []
files = []
hgrepos = []
issue_num = 46576
keywords = ['patch']
message_count = 8.0
messages = ['412104', '412125', '412396', '412416', '412418', '412424', '416797', '416902']
nosy_count = 4.0
nosy_names = ['gregory.p.smith', 'jkloth', 'miss-islington', 'xtreak']
pr_nums = ['31015', '31089', '31093', '32338', '32382']
priority = 'normal'
resolution = 'fixed'
stage = 'commit review'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue46576'
versions = ['Python 3.9', 'Python 3.10', 'Python 3.11']
Activity
gpshead commentedon Jan 29, 2022
test_peg_generator is an extremely slow test. This bug tracks any changes to reduce its runtime and test latency.
tirkarthi commentedon Jan 30, 2022
See also bpo-46524 for a similar discussion.
gpshead commentedon Feb 2, 2022
New changeset 164a017 by Gregory P. Smith in branch 'main':
bpo-46576: bpo-46524: Disable compiler optimization within test_peg_generator. (bpo-31015)
164a017
gpshead commentedon Feb 3, 2022
New changeset f5ebec4 by Gregory P. Smith in branch '3.10':
[3.10] bpo-46576: bpo-46524: Disable compiler optimization within test_peg_generator. (GH-31015) (GH-31089)
f5ebec4
miss-islington commentedon Feb 3, 2022
New changeset e825860 by Miss Islington (bot) in branch '3.9':
[3.9] [3.10] bpo-46576: bpo-46524: Disable compiler optimization within test_peg_generator. (GH-31015) (GH-31089) (GH-31093)
e825860
gpshead commentedon Feb 3, 2022
for my purposes those PRs make it reasonable, even though it remains one of our slowest tests. we can reopen/reuse this issue for any further test_peg_generator performance improvements as needed.
jkloth commentedon Apr 5, 2022
My PR-32338 further reduces the runtime of the test another ~25%.
On my machine, before 85s, after 65s.
gpshead commentedon Apr 6, 2022
New changeset 612e422 by Jeremy Kloth in branch 'main':
bpo-46576: Speed up test_peg_generator by using a static library for shared sources (GH-32338)
612e422