[PATCH] cfq-iosched: check busy queues before deciding we are idle
authorJens Axboe <axboe@suse.de>
Thu, 1 Jun 2006 08:07:26 +0000 (10:07 +0200)
committerJens Axboe <axboe@suse.de>
Thu, 1 Jun 2006 08:07:26 +0000 (10:07 +0200)
commite0de0206a2a37cd3e0ba9954d9f863e11d6d1782
tree58ba74a2f8e0edce59c770c74d019d4e1e3c98fd
parentba8f5baba79da8eb502f8534c3a8ecb64aceb790
[PATCH] cfq-iosched: check busy queues before deciding we are idle

For just one busy queue (like async write out), we often overlooked
that we could queue more io and decided we were idle instead. This causes
us quite a bit of performance loss.

Signed-off-by: Jens Axboe <axboe@suse.de>
block/cfq-iosched.c