Mercurial > hg
view tests/test-schemes.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 | bf1d5c223ac0 |
children | 393e44324037 |
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#require serve $ cat <<EOF >> $HGRCPATH > [extensions] > schemes= > > [schemes] > l = http://localhost:$HGPORT/ > parts = http://{1}:$HGPORT/ > z = file:\$PWD/ > EOF $ hg init test $ cd test $ echo a > a $ hg ci -Am initial adding a invalid scheme $ hg log -R z:z abort: no '://' in scheme url 'z:z' [255] http scheme $ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log $ cat hg.pid >> $DAEMON_PIDS $ hg incoming l:// comparing with l:// searching for changes no changes found [1] check that {1} syntax works $ hg incoming --debug parts://localhost using http://localhost:$HGPORT/ sending capabilities command comparing with parts://localhost/ query 1; heads sending batch command searching for changes all remote heads known locally no changes found [1] check that paths are expanded $ PWD=`pwd` hg incoming z:// comparing with z:// searching for changes no changes found [1] check that debugexpandscheme outputs the canonical form $ hg debugexpandscheme bb://user/repo https://bitbucket.org/user/repo expanding an unknown scheme emits the input $ hg debugexpandscheme foobar://this/that foobar://this/that expanding a canonical URL emits the input $ hg debugexpandscheme https://bitbucket.org/user/repo https://bitbucket.org/user/repo errors $ cat errors.log $ cd ..