Mercurial > hg
view tests/test-profile.t @ 31397:8f5ed8fa39f8
perf: perform a garbage collection before each iteration
Currently, no explicit garbage collection is performed when running
the microbenchmarks in `hg perf`. I think this is wrong because
garbage collection can have a significant impact on execution times.
And, if gc is triggered via the default heuristics, it will
fire effectively randomly during subsequent benchmark iterations
due to variable amount of garbage left over from previous runs.
Running a gc before invoking the measured function will help ensure
state is more consistent across all iterations.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Mon, 13 Mar 2017 18:16:42 -0700 |
parents | 262c2be8ea5a |
children | 49145a2b2fb0 |
line wrap: on
line source
test --time $ hg --time help -q help 2>&1 | grep time > /dev/null $ hg init a $ cd a #if lsprof test --profile $ prof='hg --config profiling.type=ls --profile' $ $prof st 2>../out $ grep CallCount ../out > /dev/null || cat ../out $ $prof --config profiling.output=../out st $ grep CallCount ../out > /dev/null || cat ../out $ $prof --config profiling.output=blackbox --config extensions.blackbox= st $ grep CallCount .hg/blackbox.log > /dev/null || cat .hg/blackbox.log $ $prof --config profiling.format=text st 2>../out $ grep CallCount ../out > /dev/null || cat ../out $ echo "[profiling]" >> $HGRCPATH $ echo "format=kcachegrind" >> $HGRCPATH $ $prof st 2>../out $ grep 'events: Ticks' ../out > /dev/null || cat ../out $ $prof --config profiling.output=../out st $ grep 'events: Ticks' ../out > /dev/null || cat ../out #endif #if lsprof serve Profiling of HTTP requests works $ $prof --config profiling.format=text --config profiling.output=../profile.log serve -d -p $HGPORT --pid-file ../hg.pid -A ../access.log $ cat ../hg.pid >> $DAEMON_PIDS $ hg -q clone -U http://localhost:$HGPORT ../clone A single profile is logged because file logging doesn't append $ grep CallCount ../profile.log | wc -l \s*1 (re) #endif Install an extension that can sleep and guarantee a profiler has time to run $ cat >> sleepext.py << EOF > import time > from mercurial import cmdutil, commands > cmdtable = {} > command = cmdutil.command(cmdtable) > @command('sleep', [], 'hg sleep') > def sleep(ui, *args, **kwargs): > time.sleep(0.1) > EOF $ cat >> $HGRCPATH << EOF > [extensions] > sleep = `pwd`/sleepext.py > EOF statistical profiler works $ hg --profile sleep 2>../out $ grep Sample ../out Sample count: \d+ (re) Various statprof formatters work $ hg --profile --config profiling.statformat=byline sleep 2>../out $ head -n 1 ../out % cumulative self $ grep Sample ../out Sample count: \d+ (re) $ hg --profile --config profiling.statformat=bymethod sleep 2>../out $ head -n 1 ../out % cumulative self $ grep Sample ../out Sample count: \d+ (re) $ hg --profile --config profiling.statformat=hotpath sleep 2>../out $ grep Sample ../out Sample count: \d+ (re) $ hg --profile --config profiling.statformat=json sleep 2>../out $ cat ../out \[\[\d+.* (re) statprof can be used as a standalone module $ $PYTHON -m mercurial.statprof hotpath must specify --file to load [1] $ cd ..