Commit 781021ea5a5676662cfd1e7832b80372d93736df contains the fix for the
py2 performance issue.
** Changed in: python-memcache (Ubuntu Cosmic)
Status: New => Triaged
** Changed in: python-memcache (Ubuntu Bionic)
Status: New => Triaged
** Changed in: python-memcache (Ubuntu Bionic)
Importance: Undecided => High
** Changed in: python-memcache (Ubuntu Cosmic)
Importance: Undecided => High
** Description changed:
- Just migrated a python 2 application from 14.04 LTS to 18.04 LTS and got
- a serious performance degradation. Like 1000 times slower. After some
- profiling it was concluded that the problem was the transition from
- cPickle back to pickle for data serialization.
+ [Impact]
+ Performance under Python 2 with this package since 1.54 is poor due to the
lack of use of the native C implementation of pickle.
+
+ [Test Case]
+ TBC
+
+ [Regression Potential]
+ The picked fix is relatively minor and simply adjusts the import under Py2 to
use the native C implementation so regression potential will be low.
+
+ [Original Bug Report]
+ Just migrated a python 2 application from 14.04 LTS to 18.04 LTS and got a
serious performance degradation. Like 1000 times slower. After some profiling
it was concluded that the problem was the transition from cPickle back to
pickle for data serialization.
This is a problem fixed in version 1.58.
https://github.com/linsomniac/python-memcached/releases/tag/1.58
Please upgrade python-memcache to a more recent version or patch the
current version.
Versions affected: Ubuntu 16.04 LTS and Ubuntu 18.04 LTS
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https://bugs.launchpad.net/bugs/1802487
Title:
Fix performance regression in v1.57
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