Mercurial > hg
view tests/test-http-branchmap.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 | 4d2b9b304ad0 |
children | d83ca854fa21 |
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#require killdaemons $ hgserve() { > hg serve -a localhost -p $HGPORT1 -d --pid-file=hg.pid \ > -E errors.log -v $@ > startup.log > # Grepping hg serve stdout would hang on Windows > grep -v 'listening at' startup.log > cat hg.pid >> "$DAEMON_PIDS" > } $ hg init a $ hg --encoding utf-8 -R a branch æ marked working directory as branch \xc3\xa6 (esc) (branches are permanent and global, did you want a bookmark?) $ echo foo > a/foo $ hg -R a ci -Am foo adding foo $ hgserve -R a --config web.push_ssl=False --config web.allow_push=* --encoding latin1 $ hg --encoding utf-8 clone http://localhost:$HGPORT1 b requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files updating to branch \xc3\xa6 (esc) 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg --encoding utf-8 -R b log changeset: 0:867c11ce77b8 branch: \xc3\xa6 (esc) tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: foo $ echo bar >> b/foo $ hg -R b ci -m bar $ hg --encoding utf-8 -R b push pushing to http://localhost:$HGPORT1/ searching for changes remote: adding changesets remote: adding manifests remote: adding file changes remote: added 1 changesets with 1 changes to 1 files $ hg -R a --encoding utf-8 log changeset: 1:58e7c90d67cb branch: \xc3\xa6 (esc) tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: bar changeset: 0:867c11ce77b8 branch: \xc3\xa6 (esc) user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: foo $ killdaemons.py hg.pid verify 7e7d56fe4833 (encoding fallback in branchmap to maintain compatibility with 1.3.x) $ cat <<EOF > oldhg > import sys > from mercurial import ui, hg, commands > > class StdoutWrapper(object): > def __init__(self, stdout): > self._file = stdout > > def write(self, data): > if data == '47\n': > # latin1 encoding is one %xx (3 bytes) shorter > data = '44\n' > elif data.startswith('%C3%A6 '): > # translate to latin1 encoding > data = '%%E6 %s' % data[7:] > self._file.write(data) > > def __getattr__(self, name): > return getattr(self._file, name) > > sys.stdout = StdoutWrapper(sys.stdout) > sys.stderr = StdoutWrapper(sys.stderr) > > myui = ui.ui() > repo = hg.repository(myui, 'a') > commands.serve(myui, repo, stdio=True, cmdserver=False) > EOF $ echo baz >> b/foo $ hg -R b ci -m baz $ hg push -R b -e 'python oldhg' ssh://dummy/ --encoding latin1 pushing to ssh://dummy/ searching for changes remote: adding changesets remote: adding manifests remote: adding file changes remote: added 1 changesets with 1 changes to 1 files