Mercurial > hg
view tests/test-bad-extension @ 5339:058e93c3d07d
I have spotted the biggest bottleneck in "bdiff.c". Actually it was
pretty easy to find after I recompiled the python interpreter and
mercurial for profiling.
In "bdiff.c" function "equatelines" allocates the minimum hash table
size, which can lead to tons of collisions. I introduced an
"overcommit" factor of 16, this is, I allocate 16 times more memory
than the minimum value. Overcommiting 128 times does not improve the
performance over the 16-times case.
author | Christoph Spiel <cspiel@freenet.de> |
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date | Thu, 27 Sep 2007 23:57:57 -0500 |
parents | efe6f92c0847 |
children | f8a86ea7521b |
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#!/bin/sh echo 'raise Exception("bit bucket overflow")' > badext.py abspath=`pwd`/badext.py echo '[extensions]' >> $HGRCPATH echo "gpg =" >> $HGRCPATH echo "hgext.gpg =" >> $HGRCPATH echo "badext = $abspath" >> $HGRCPATH hg -q help help