Mercurial > hg
view tests/test-dispatch.py @ 27470:d394a1a3708a
perf: add perfrevlogrevision
As part of investigating performance improvements to revlog reading,
I needed a mechanism to measure every part of revlog reading so I knew
where time was spent and how effective optimizations were.
This patch implements a perf command for benchmarking the various
stages of reading a single revlog revision.
When executed against a manifest revision at the end of a 30,000+
long delta chain in mozilla-central, the command demonstrates that
~80% of time is spent in zlib decompression.
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Sun, 20 Dec 2015 18:38:21 -0800 |
parents | 08bfec2ef031 |
children | 06245740b408 |
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import os from mercurial import dispatch def testdispatch(cmd): """Simple wrapper around dispatch.dispatch() Prints command and result value, but does not handle quoting. """ print "running: %s" % (cmd,) req = dispatch.request(cmd.split()) result = dispatch.dispatch(req) print "result: %r" % (result,) testdispatch("init test1") os.chdir('test1') # create file 'foo', add and commit f = open('foo', 'wb') f.write('foo\n') f.close() testdispatch("add foo") testdispatch("commit -m commit1 -d 2000-01-01 foo") # append to file 'foo' and commit f = open('foo', 'ab') f.write('bar\n') f.close() testdispatch("commit -m commit2 -d 2000-01-02 foo") # check 88803a69b24 (fancyopts modified command table) testdispatch("log -r 0") testdispatch("log -r tip")