##// END OF EJS Templates
perf: add threading capability to perfbdiff...
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.

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test-contrib-perf.t
181 lines | 5.1 KiB | text/troff | Tads3Lexer
#require test-repo
Set vars:
$ . "$TESTDIR/helpers-testrepo.sh"
$ CONTRIBDIR="$TESTDIR/../contrib"
Prepare repo:
$ hg init
$ echo this is file a > a
$ hg add a
$ hg commit -m first
$ echo adding to file a >> a
$ hg commit -m second
$ echo adding more to file a >> a
$ hg commit -m third
$ hg up -r 0
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ echo merge-this >> a
$ hg commit -m merge-able
created new head
$ hg up -r 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
perfstatus
$ cat >> $HGRCPATH << EOF
> [extensions]
> perfstatusext=$CONTRIBDIR/perf.py
> [perf]
> presleep=0
> stub=on
> parentscount=1
> EOF
$ hg help perfstatusext
perfstatusext extension - helper extension to measure performance
list of commands:
perfaddremove
(no help text available)
perfancestors
(no help text available)
perfancestorset
(no help text available)
perfannotate (no help text available)
perfbdiff benchmark a bdiff between revisions
perfbookmarks
benchmark parsing bookmarks from disk to memory
perfbranchmap
benchmark the update of a branchmap
perfbundleread
Benchmark reading of bundle files.
perfcca (no help text available)
perfchangegroupchangelog
Benchmark producing a changelog group for a changegroup.
perfchangeset
(no help text available)
perfctxfiles (no help text available)
perfdiffwd Profile diff of working directory changes
perfdirfoldmap
(no help text available)
perfdirs (no help text available)
perfdirstate (no help text available)
perfdirstatedirs
(no help text available)
perfdirstatefoldmap
(no help text available)
perfdirstatewrite
(no help text available)
perffncacheencode
(no help text available)
perffncacheload
(no help text available)
perffncachewrite
(no help text available)
perfheads (no help text available)
perfindex (no help text available)
perfloadmarkers
benchmark the time to parse the on-disk markers for a repo
perflog (no help text available)
perflookup (no help text available)
perflrucachedict
(no help text available)
perfmanifest (no help text available)
perfmergecalculate
(no help text available)
perfmoonwalk benchmark walking the changelog backwards
perfnodelookup
(no help text available)
perfparents (no help text available)
perfpathcopies
(no help text available)
perfphases benchmark phasesets computation
perfrawfiles (no help text available)
perfrevlogchunks
Benchmark operations on revlog chunks.
perfrevlogindex
Benchmark operations against a revlog index.
perfrevlogrevision
Benchmark obtaining a revlog revision.
perfrevlogrevisions
Benchmark reading a series of revisions from a revlog.
perfrevrange (no help text available)
perfrevset benchmark the execution time of a revset
perfstartup (no help text available)
perfstatus (no help text available)
perftags (no help text available)
perftemplating
(no help text available)
perfvolatilesets
benchmark the computation of various volatile set
perfwalk (no help text available)
perfwrite microbenchmark ui.write
(use 'hg help -v perfstatusext' to show built-in aliases and global options)
$ hg perfaddremove
$ hg perfancestors
$ hg perfancestorset 2
$ hg perfannotate a
$ hg perfbdiff -c 1
$ hg perfbdiff --alldata 1
$ hg perfbookmarks
$ hg perfbranchmap
$ hg perfcca
$ hg perfchangegroupchangelog
$ hg perfchangeset 2
$ hg perfctxfiles 2
$ hg perfdiffwd
$ hg perfdirfoldmap
$ hg perfdirs
$ hg perfdirstate
$ hg perfdirstatedirs
$ hg perfdirstatefoldmap
$ hg perfdirstatewrite
$ hg perffncacheencode
$ hg perffncacheload
$ hg perffncachewrite
$ hg perfheads
$ hg perfindex
$ hg perfloadmarkers
$ hg perflog
$ hg perflookup 2
$ hg perflrucache
$ hg perfmanifest 2
$ hg perfmergecalculate -r 3
$ hg perfmoonwalk
$ hg perfnodelookup 2
$ hg perfpathcopies 1 2
$ hg perfrawfiles 2
$ hg perfrevlogindex -c
$ hg perfrevlogrevisions .hg/store/data/a.i
$ hg perfrevlogrevision -m 0
$ hg perfrevlogchunks -c
$ hg perfrevrange
$ hg perfrevset 'all()'
$ hg perfstartup
$ hg perfstatus
$ hg perftags
$ hg perftemplating
$ hg perfvolatilesets
$ hg perfwalk
$ hg perfparents
Check perf.py for historical portability
$ cd "$TESTDIR/.."
$ (testrepohg files -r 1.2 glob:mercurial/*.c glob:mercurial/*.py;
> testrepohg files -r tip glob:mercurial/*.c glob:mercurial/*.py) |
> "$TESTDIR"/check-perf-code.py contrib/perf.py
contrib/perf.py:\d+: (re)
> from mercurial import (
import newer module separately in try clause for early Mercurial
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