| commit | 573412b29586e58477adb70e022193a337763319 | [log] [tgz] |
|---|---|---|
| author | Corrado Zoccolo <czoccolo@gmail.com> | Sun Dec 06 11:48:52 2009 +0100 |
| committer | Jens Axboe <axboe@carl.(none)> | Wed Dec 09 12:32:55 2009 +0100 |
| tree | 757ebcc4da3ba7b8d8beb8e8e0ff6a4fe4428f52 | |
| parent | 2b876f95d03e226394b5d360c86127cbefaf614b [diff] |
cfq-iosched: reduce write depth only if sync was delayed The introduction of ramp-up formula for async queue depths has slowed down dirty page reclaim, by reducing async write performance. This patch makes sure the formula kicks in only when sync request was recently delayed. Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>