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[3.11] gh-96159: Fix significant performance degradation in logging.TimedRotat… (GH-96182) (GH-96196)

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Co-authored-by: Duncan Grisby <duncan-github@grisby.org>
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Miss Islington (bot) 2022-08-23 00:01:10 -07:00 • committed by GitHub
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commit 04e3785098
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2 changed files with 8 additions and 3 deletions
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10
Lib/logging/handlers.py
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@ -348,11 +348,15 @@ class TimedRotatingFileHandler(BaseRotatingHandler):
record is not used, as we are just comparing times, but it is needed so
the method signatures are the same
"""
# See bpo-45401: Never rollover anything other than regular files
if os.path.exists(self.baseFilename) and not os.path.isfile(self.baseFilename):
return False
t = int(time.time())
if t >= self.rolloverAt:
# See #89564: Never rollover anything other than regular files
if os.path.exists(self.baseFilename) and not os.path.isfile(self.baseFilename):
# The file is not a regular file, so do not rollover, but do
# set the next rollover time to avoid repeated checks.
self.rolloverAt = self.computeRollover(t)
return False
return True
return False

1
Misc/NEWS.d/next/Library/2022-08-22-18-42-17.gh-issue-96159.3bFU39.rst Normal file
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@ -0,0 +1 @@
Fix a performance regression in logging TimedRotatingFileHandler. Only check for special files when the rollover time has passed.