[Bug 5975] New: Performance regression on unbundle in 4.7

mercurial-bugs at mercurial-scm.org mercurial-bugs at mercurial-scm.org
Fri Aug 31 14:10:43 UTC 2018


https://bz.mercurial-scm.org/show_bug.cgi?id=5975

            Bug ID: 5975
           Summary: Performance regression on unbundle in 4.7
           Product: Mercurial
           Version: default branch
          Hardware: PC
                OS: Linux
            Status: UNCONFIRMED
          Severity: bug
          Priority: wish
         Component: Mercurial
          Assignee: bugzilla at mercurial-scm.org
          Reporter: lothiraldan at gmail.com
                CC: mercurial-devel at mercurial-scm.org

Our performance test suite worker detected a regression in debugunbundle
(http://perf.octobus.net/#regressions?sort=3&dir=desc):

basic_commands.UnbundleTimeSuite.time_debugunbundle('netbeans-2018-08-01',
'last-thousand') 2018-08-17 03:51    d0d197ab..8547c859  1.81x   1.320s  2.394s 
basic_commands.UnbundleTimeSuite.time_debugunbundle('pypy-2018-08-01',
'last-thousand') 2018-08-17 03:51    d0d197ab..8547c859  1.15x   1.236s  1.419s 

The bisect tool detected that it's likely because of
https://www.mercurial-scm.org/repo/hg/rev/8f83a953.

We will send a patch to fix it.

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