On Fri, 2009-10-02 at 20:08 +0200, Jens Axboe wrote: > On Thu, Oct 01 2009, Mike Galbraith wrote: > > max_dispatch = cfqd->cfq_quantum; > > if (cfq_class_idle(cfqq)) > > max_dispatch = 1; > > > > + if (cfqd->busy_queues > 1) > > + cfqd->od_stamp = jiffies; > > + > > ->busy_queues > 1 just means that they have requests ready for dispatch, > not that they are dispatched. But we're not alone, somebody else is using disk. I'm trying to make sure we don't have someone _about_ to come back.. like a reader, so when there's another player, stamp to give him some time to wake up/submit before putting the pedal to the metal. -Mike -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
