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(parent: ce47f52) | patch
rds: switch to rwlock on bind_lock
authorChris Mason <chris.mason@oracle.com>
Wed, 21 Apr 2010 20:04:43 +0000 (13:04 -0700)
committerAndy Grover <andy.grover@oracle.com>
Thu, 9 Sep 2010 01:12:26 +0000 (18:12 -0700)
commit976673ee1b92d939168c8c1fbad3e16c45caa545
tree36c682f96789118bebe0c14e3a5a5353b184a22btree | snapshot (tar.gz zip)
parentce47f52f42e69d48d1b63fa618fce9cd7ffa9417commit | diff
rds: switch to rwlock on bind_lock

The bind_lock is almost entirely readonly, but it gets
hammered during normal operations and is a major bottleneck.

This commit changes it to an rwlock, which takes it from 80%
of the system time on a big numa machine down to much lower
numbers.

A better fix would involve RCU, which is done in a later commit

Signed-off-by: Chris Mason <chris.mason@oracle.com>
net/rds/bind.c diff | blob | blame | history