Mercurial > hg
view tests/test-mq-qdiff.out @ 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> |
---|---|
date | Thu, 27 Sep 2007 23:57:57 -0500 |
parents | 8ca608c1eb02 |
children | 3d1f9dcecdea |
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% init % commit adding base % qnew mqbase % qrefresh % qdiff diff -r 67e992f2c4f3 base --- a/base +++ b/base @@ -1,1 +1,1 @@ base -base +patched % qdiff dirname diff -r 67e992f2c4f3 base --- a/base +++ b/base @@ -1,1 +1,1 @@ base -base +patched