[Bug 4628] New: annotate extremely slow

[mercurial-bugs at selenic.com]

http://bz.selenic.com/show_bug.cgi?id=4628

          Priority: normal
            Bug ID: 4628
                CC: mercurial-devel at selenic.com
          Assignee: bugzilla at selenic.com
           Summary: annotate extremely slow
          Severity: bug
    Classification: Unclassified
                OS: Linux
          Reporter: pitrou at free.fr
          Hardware: PC
            Status: UNCONFIRMED
           Version: 3.4-rc
         Component: Mercurial
           Product: Mercurial

Take a cpython clone (https://hg.python.org/cpython) then run:

$ time hg ann Objects/weakrefobject.c > /dev/null

real    0m22.989s
user    0m19.119s
sys    0m3.672s

There's nothing terrible about this file's history:

$ hg log -q Objects/weakrefobject.c | wc -l
92


Other files are generally faster to annotate.

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