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view tests/bzr-definitions @ 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 | 89872688893f |
children | 7a88643bc0ef |
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# this file holds the definitions that are used in various bzr tests TERM=dumb; export TERM echo '[extensions]' >> $HGRCPATH echo 'convert = ' >> $HGRCPATH glog() { hg log -G --template '{rev}@{branch} "{desc|firstline}" files: {files}\n' "$@" } manifest() { echo "% manifest of $2" hg -R $1 manifest -v -r $2 }