https://bz.mercurial-scm.org/show_bug.cgi?id=5964
Bug ID: 5964
Summary: Performance regression on pushing in 4.7
Product: Mercurial
Version: unspecified
Hardware: PC
OS: Linux
Status: UNCONFIRMED
Severity: bug
Priority: wish
Component: Mercurial
Assignee: bugzi...@mercurial-scm.org
Reporter: lothiral...@gmail.com
CC: mercurial-devel@mercurial-scm.org
We identified a performance regression in 4.7 concerning the push command.
Here is a reproduction script and output when trying to push the pypy
repository to a copy of it locally:
$ hg --version; and python -m perf command bash -c "HGRCPATH=
/home/lothiraldan/.virtualenvs/mercurial/bin/hg push -R pypy-2017
pypy-2017-copy/ || exit 0"
Mercurial Distributed SCM (version 4.6.2)
(see https://mercurial-scm.org for more information)
Copyright (C) 2005-2018 Matt Mackall and others
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
.....................
command: Mean +- std dev: 248 ms +- 7 ms
$ hg --version; and python -m perf command bash -c "HGRCPATH=
/home/lothiraldan/.virtualenvs/mercurial/bin/hg push -R pypy-2017
pypy-2017-copy/ || exit 0"
Mercurial Distributed SCM (version 4.7)
(see https://mercurial-scm.org for more information)
Copyright (C) 2005-2018 Matt Mackall and others
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
.....................
command: Mean +- std dev: 1.79 sec +- 0.01 sec
$ hg --version; and python -m perf command bash -c "HGRCPATH=
/home/lothiraldan/.virtualenvs/mercurial/bin/hg push -R pypy-2017
pypy-2017-copy/ || exit 0"
Mercurial Distributed SCM (version 4.7+370-06baaf43c959)
(see https://mercurial-scm.org for more information)
Copyright (C) 2005-2018 Matt Mackall and others
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
.....................
command: Mean +- std dev: 1.79 sec +- 0.03 sec
Our performance suite initially identified the regression:
http://perf.octobus.net/#regressions?sort=3&dir=desc&branch=stable
We are working on pinpointing the issue and will update the issue with more
information as soon as we have them.
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