[Bug 4206] New: Tag reading performance regression post-2.9.1

mercurial-bugs at selenic.com mercurial-bugs at selenic.com
Tue Mar 25 17:05:51 UTC 2014


http://bz.selenic.com/show_bug.cgi?id=4206

          Priority: normal
            Bug ID: 4206
                CC: mercurial-devel at selenic.com
          Assignee: bugzilla at selenic.com
           Summary: Tag reading performance regression post-2.9.1
          Severity: bug
    Classification: Unclassified
                OS: All
          Reporter: mpm at selenic.com
          Hardware: All
            Status: UNCONFIRMED
           Version: unspecified
         Component: Mercurial
           Product: Mercurial

Reported by Gregory Szorc:

# 2.9.1
$ rm .hg/cache/*
$ hg --time bookmarks
time: real 0.400 secs (user 0.380+0.000 sys 0.020+0.000)
$ ls .hg/cache
<nothing reported>

# @ 2.9.1+177-c7d543eebe1a
$ hg --time bookmarks
time: real 43.130 secs (user 38.540+0.000 sys 4.560+0.000)
$ ls .hg/cache
tags

Bisecting it:

$ hg bisect -g
The first bad revision is:
changeset:   20807:91d28bd0e04e
user:        Sean Farley <sean.michael.farley at gmail.com>
date:        Tue Mar 18 20:10:33 2014 -0500
summary:     repoview: add non-global tags to candidate list for blocking
hidden changesets

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