CONTRIBUTORS

speed up hg log --patch

Changing dodiff to read the manifest/changelog for node1 before calling
repo.update allows us to take advantage of the revlog revision cache.

Before this patch and my previous "speed up hg log --debug" patch, when
using hg log -p to display three revisions (A, B and C), dodiff and
repo.changes would end up reading the manifests in this order:

 B A B A C B C B

With both patches, this order becomes:

 A A B B B B C C

(This considers only dodiff and repo.changes.  I'm not sure how other
parts of hg log enter the picture.)

The speed up will depend on the revisions being displayed.  (All
"before" times already have my previous "speed up hg log --debug" patch
applied.)

hg repo (tip = 414e81ae971f).  hg log -p
         before           after
real    0m50.981s       0m45.279s
user    0m47.930s       0m42.560s
sys     0m2.526s        0m2.523s
output size: 6917897 bytes

kernel repo (tip = 9d4e135960ed).  hg log -p -l64
         before           after
real    2m14.995s       1m45.025s
user    2m9.509s        1m33.900s
sys     0m3.663s        0m2.942s
output size: 31497621 bytes

same kernel repo.  hg log -p -l64 -r c84c2069592f:0
         before           after
real    1m48.045s       1m0.076s
user    1m44.094s       0m58.492s
sys     0m2.603s        0m1.103s
output size: 197983 bytes

c84c2069592f was the tip of a 10 day old kernel repo that I had lying
around and was where I first tested this patch.  For some weird
coincidence it's also a place where the patch makes a huge difference.

Andrea Arcangeli <andrea at suse.de>
Thomas Arendsen Hein <thomas at intevation.de>
Goffredo Baroncelli <kreijack at libero.it>
Muli Ben-Yehuda <mulix at mulix.org>
Mikael Berthe <mikael at lilotux.net>
Benoit Boissinot <bboissin at gmail.com>
Vincent Danjean <vdanjean.ml at free.fr>
Jake Edge <jake at edge2.net>
Michael Fetterman <michael.fetterman at intel.com>
Edouard Gomez <ed.gomez at free.fr>
Eric Hopper <hopper at omnifarious.org>
Alecs King <alecsk at gmail.com>
Volker Kleinfeld <Volker.Kleinfeld at gmx.de>
Vadim Lebedev <vadim at mbdsys.com>
Christopher Li <hg at chrisli.org>
Chris Mason <mason at suse.com>
Wojciech Milkowski <wmilkowski at interia.pl>
Chad Netzer <chad.netzer at gmail.com>
Bryan O'Sullivan <bos at serpentine.com>
Vicent Seguí Pascual <vseguip at gmail.com>
Sean Perry <shaleh at speakeasy.net>
Nguyen Anh Quynh <aquynh at gmail.com>
Ollivier Robert <roberto at keltia.freenix.fr>
Arun Sharma <arun at sharma-home.net>
Josef "Jeff" Sipek <jeffpc at optonline.net>
Kevin Smith <yarcs at qualitycode.com>
TK Soh <teekaysoh at yahoo.com>
Radoslaw Szkodzinski <astralstorm at gorzow.mm.pl>
Samuel Tardieu <sam at rfc1149.net>
K Thananchayan <thananck at yahoo.com>
Andrew Thompson <andrewkt at aktzero.com>
Michael S. Tsirkin <mst at mellanox.co.il>
Rafael Villar Burke <pachi at mmn-arquitectos.com>
Tristan Wibberley <tristan at wibberley.org>
Mark Williamson <mark.williamson at cl.cam.ac.uk>

If you are a contributor and don't see your name here, please let me know.