Mercurial > hg
view contrib/tcsh_completion @ 35599:af25237be091
perf: add threading capability to perfbdiff
Since we are releasing the GIL during diffing, it is interesting to see how a
thread pool would perform on diffing. We add a new `--threads` argument to
commands. Synchronizing the thread pool is a bit complex because we want to be
able to reuse it from one run to another.
On my computer (i7 with 4 cores + hyperthreading), I get the following data for
about 12000 revisions:
threads wall comb wall gain comb overhead
none 31.596715 31.59 0.00% 0.00%
1 31.621228 31.62 -0.08% 0.09%
2 16.406202 32.8 48.08% 3.83%
3 11.598334 34.76 63.29% 10.03%
4 9.205421 36.77 70.87% 16.40%
5 8.517604 42.51 73.04% 34.57%
6 7.94645 47.58 74.85% 50.62%
7 7.434972 51.92 76.47% 64.36%
8 7.070638 55.34 77.62% 75.18%
Compared to the feature disabled (threads=0), the overhead is negligible with
the threading code (threads=1), and the gain is already 48% with two threads.
author | Boris Feld <boris.feld@octobus.net> |
---|---|
date | Sun, 17 Dec 2017 04:31:27 +0100 |
parents | 2616325766e3 |
children |
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# # tcsh completion for Mercurial # # This file has been auto-generated by tcsh_completion_build.sh for # Mercurial Distributed SCM (version 1.7.5+157-8a220ae0b2ba) # # Copyright (C) 2005 TK Soh. # # This is free software; you can redistribute it and/or modify it under # the terms of the GNU General Public License as published by the Free # Software Foundation; either version 2 of the License, or (at your # option) any later version. # complete hg \ 'n/--cwd/d/' 'n/-R/d/' 'n/--repository/d/' \ 'C/-/( -R --repository \ --cwd \ -y --noninteractive \ -q --quiet \ -v --verbose \ --config \ --debug \ --debugger \ --encoding \ --encodingmode \ --traceback \ --time \ --profile \ --version \ -h --help)/' \ 'p/1/(add addremove annotate blame archive \ backout bisect bookmarks branch branches \ bundle cat clone commit ci \ copy cp debugancestor debugbuilddag debugcheckstate \ debugcommands debugcomplete debugdag debugdata debugdate \ debugfsinfo debugignore debugindex debugindexdot debuginstall \ debugpushkey debugrebuildstate debugrename debugrevspec debugsetparents \ debugstate debugsub debugwalk diff export \ forget grep heads help identify \ id import patch incoming in \ init locate log history manifest \ merge outgoing out parents paths \ pull push recover remove rm \ rename move mv resolve revert \ rollback root serve showconfig debugconfig \ status st summary sum tag \ tags tip unbundle update up \ checkout co verify version)/'