Mercurial > hg
view tests/test-lock-badness.t @ 29787:80df04266a16
hgweb: profile HTTP requests
Currently, running `hg serve --profile` doesn't yield anything useful:
when the process is terminated the profiling output displays results
from the main thread, which typically spends most of its time in
select.select(). Furthermore, it has no meaningful results from
mercurial.* modules because the threads serving HTTP requests don't
actually get profiled.
This patch teaches the hgweb wsgi applications to profile individual
requests. If profiling is enabled, the profiler kicks in after
HTTP/WSGI environment processing but before Mercurial's main request
processing.
The profile results are printed to the configured profiling output.
If running `hg serve` from a shell, they will be printed to stderr,
just before the HTTP request line is logged. If profiling to a file,
we only write a single profile to the file because the file is not
opened in append mode. We could add support for appending to files
in a future patch if someone wants it.
Per request profiling doesn't work with the statprof profiler because
internally that profiler collects samples from the thread that
*initially* requested profiling be enabled. I have plans to address
this by vendoring Facebook's customized statprof and then improving
it.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sun, 14 Aug 2016 18:37:24 -0700 |
parents | 38292b227deb |
children | 0c8c388c7d62 |
line wrap: on
line source
#require unix-permissions no-root no-windows Prepare $ hg init a $ echo a > a/a $ hg -R a ci -A -m a adding a $ hg clone a b updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved Test that raising an exception in the release function doesn't cause the lock to choke $ cat > testlock.py << EOF > from mercurial import cmdutil, error, error > > cmdtable = {} > command = cmdutil.command(cmdtable) > > def acquiretestlock(repo, releaseexc): > def unlock(): > if releaseexc: > raise error.Abort('expected release exception') > l = repo._lock(repo.vfs, 'testlock', False, unlock, None, 'test lock') > return l > > @command('testlockexc') > def testlockexc(ui, repo): > testlock = acquiretestlock(repo, True) > try: > testlock.release() > finally: > try: > testlock = acquiretestlock(repo, False) > except error.LockHeld: > raise error.Abort('lockfile on disk even after releasing!') > testlock.release() > EOF $ cat >> $HGRCPATH << EOF > [extensions] > testlock=$TESTTMP/testlock.py > EOF $ hg -R b testlockexc abort: expected release exception [255] One process waiting for another $ cat > hooks.py << EOF > import time > def sleepone(**x): time.sleep(1) > def sleephalf(**x): time.sleep(0.5) > EOF $ echo b > b/b $ hg -R b ci -A -m b --config hooks.precommit="python:`pwd`/hooks.py:sleepone" > stdout & $ hg -R b up -q --config hooks.pre-update="python:`pwd`/hooks.py:sleephalf" \ > > preup 2>&1 $ wait $ cat preup waiting for lock on working directory of b held by '*:*' (glob) got lock after * seconds (glob) $ cat stdout adding b Pushing to a local read-only repo that can't be locked $ chmod 100 a/.hg/store $ hg -R b push a pushing to a searching for changes abort: could not lock repository a: Permission denied [255] $ chmod 700 a/.hg/store