Matt Mackall <mpm@selenic.com> [Wed, 03 Oct 2007 16:50:32 -0500] rev 5368
Merge with crew
Matt Mackall <mpm@selenic.com> [Tue, 02 Oct 2007 18:04:18 -0500] rev 5367
Merge with crew
Matt Mackall <mpm@selenic.com> [Thu, 27 Sep 2007 23:59:18 -0500] rev 5366
bdiff: switch to lyhash
lyhash is a very simple and fast hash function that had the fewest
hash collisions on a 3.9M line text corpus and 190k line binary corpus
and should have significantly fewer collisions than the current hash
function.
Matt Mackall <mpm@selenic.com> [Thu, 27 Sep 2007 23:59:02 -0500] rev 5365
bdiff: use INT_MAX to avoid some inner loop comparisons
Christoph Spiel <cspiel@freenet.de> [Thu, 27 Sep 2007 23:58:54 -0500] rev 5364
bdiff: simple splitlines optimization
Christoph Spiel <cspiel@freenet.de> [Thu, 27 Sep 2007 23:57:57 -0500] rev 5363
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.
Patrick Mezard <pmezard@gmail.com> [Thu, 04 Oct 2007 14:26:34 +0200] rev 5362
Merge with crew-stable
Thomas Arendsen Hein <thomas@intevation.de> [Thu, 04 Oct 2007 14:23:28 +0200] rev 5361
test-convert-git: support older git client (1.4.4.4)
Patrick Mezard <pmezard@gmail.com> [Wed, 03 Oct 2007 21:08:37 +0200] rev 5360
Merge with crew-stable
Christian Ebert <blacktrash@gmx.net> [Wed, 03 Oct 2007 21:01:47 +0200] rev 5359
test-convert-cvs: handle older cvs client