https://bz.mercurial-scm.org/show_bug.cgi?id=6596
Bug ID: 6596
Summary: `hg log` and some other commands get stuck on
content-divergence computation
Product: Mercurial
Version: unspecified
Hardware: PC
OS: Linux
Status: UNCONFIRMED
Severity: bug
Priority: wish
Component: evolution
Assignee: bugzi...@mercurial-scm.org
Reporter: rgo...@octobus.net
CC: mercurial-devel@mercurial-scm.org,
pierre-yves.da...@ens-lyon.org
Python Version: ---
I'm not exactly sure how that happened, but it followed a simple pull from
foss.heptapod.net/octobus/mercurial-devel.
Commands like `hg log` or `hg pull` get stuck in an apparent loop (or something
ungodly slow) as py-spy indicates:
```
Collecting samples from '/home/alphare/.pyenv/versions/3.9.2/bin/python3
/home/alphare/hg/hg pull' (python v3.9.2)
Total Samples 28500
GIL: 0.00%, Active: 100.00%, Threads: 1
%Own %Total OwnTime TotalTime Function (filename:line)
54.00% 54.00% 185.0s 185.3s canmerge (mercurial/obsutil.py:538)
34.00% 89.00% 81.55s 270.7s successorssets (mercurial/obsutil.py:762)
4.00% 4.00% 14.17s 14.17s successorssets (mercurial/obsutil.py:761)
1.00% 1.00% 3.85s 3.85s canmerge (mercurial/obsutil.py:537)
0.00% 0.00% 0.190s 0.190s _set (mercurial/obsutil.py:535)
7.00% 7.00% 0.070s 0.070s _rundispatch (mercurial/dispatch.py:314)
0.00% 0.00% 0.040s 0.230s __get__ (mercurial/util.py:1765)
0.00% 0.00% 0.040s 0.040s cachevalue (mercurial/util.py:1771)
0.00% 0.00% 0.040s 0.040s successorssets (mercurial/obsutil.py:766)
0.00% 0.00% 0.020s 0.060s __get__ (mercurial/util.py:1766)
0.00% 93.00% 0.000s 284.9s <lambda> (mercurial/dispatch.py:1271)
0.00% 93.00% 0.000s 284.9s getinstabilitycounts
(mercurial/scmutil.py:2056)
0.00% 93.00% 0.000s 284.9s _runcatchfunc (mercurial/dispatch.py:460)
0.00% 93.00% 0.000s 284.9s _pullbundle2 (mercurial/exchange.py:1879)
0.00% 93.00% 0.000s 284.9s transaction
(hgext3rd/evolve/__init__.py:401)
0.00% 100.00% 0.000s 285.0s dispatch (mercurial/dispatch.py:250)
0.00% 93.00% 0.000s 284.9s gettransaction
(mercurial/exchange.py:1455)
0.00% 93.00% 0.000s 284.9s runcommand (mercurial/dispatch.py:918)
0.00% 93.00% 0.000s 284.9s _fullpullbundle2
(mercurial/exchange.py:1521)
0.00% 93.00% 0.000s 284.9s pull (mercurial/commands.py:5451)
0.00% 93.00% 0.000s 284.9s check (mercurial/util.py:1886)
0.00% 100.00% 0.000s 285.0s <module> (hg:61)
0.00% 93.00% 0.000s 284.9s callcatch (mercurial/scmutil.py:153)
0.00% 93.00% 0.000s 284.9s handlechangegroup
(mercurial/bundle2.py:1994)
0.00% 93.00% 0.000s 284.9s _dispatch (mercurial/dispatch.py:1273)
0.00% 93.00% 0.000s 284.9s _runcatch (mercurial/dispatch.py:470)
0.00% 93.00% 0.000s 284.9s _processpart (mercurial/bundle2.py:568)
0.00% 93.00% 0.000s 284.9s _callcatch (mercurial/dispatch.py:480)
0.00% 100.00% 0.000s 285.0s run (mercurial/dispatch.py:144)
0.00% 93.00% 0.000s 284.9s gettransaction (mercurial/bundle2.py:332)
0.00% 93.00% 0.000s 284.9s transaction
(hgext3rd/topic/__init__.py:561)
0.00% 93.00% 0.000s 284.9s transaction (mercurial/localrepo.py:2558)
0.00% 93.00% 0.000s 284.9s registersummarycallback
(mercurial/scmutil.py:2060)
0.00% 93.00% 0.000s 284.9s wrapmayobsoletewc
(hgext3rd/evolve/__init__.py:557)
0.00% 93.00% 0.000s 284.9s pullrebase (hgext/rebase.py:2180)
0.00% 93.00% 0.000s 284.9s processparts (mercurial/bundle2.py:494)
0.00% 93.00% 0.000s 284.9s transaction (mercurial/exchange.py:1474)
0.00% 93.00% 0.000s 284.9s getrevs (mercurial/obsolete.py:913)
0.00% 93.00% 0.000s 284.9s processbundle (mercurial/bundle2.py:486)
0.00% 93.00% 0.000s 284.9s _rundispatch (mercurial/dispatch.py:294)
0.00% 93.00% 0.000s 284.9s _runcommand (mercurial/dispatch.py:1285)
0.00% 93.00% 0.000s 284.9s pull (mercurial/exchange.py:1672)
0.00% 93.00% 0.000s 284.9s _computecontentdivergentset
(mercurial/obsolete.py:1026)
```
I've uploaded a tarball of my repository for reproduction to
https://static.octobus.net/broken-content-div.tgz
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