Jens Axboe wrote: > Different thing, I'm talking about single volume starvation, > not volume-to-volume. > > > elevator algoritm(s) may be causing writes to starve reads > on the same > > logical volume. We continue to investigate our other > performance issues. > > I completely disagree. Even with an intelligent io scheduler, > starvation is seen on ciss that does not happen on other > queueing hardware such as 'normal' scsi controllers/drives. > So something else is going on, and the only 'fix' so far is > to limit the ciss queue depth heavily. We will investigate this further and come up with a solution. Could be the firmware, I suppose. mikem > > -- > Jens Axboe > > - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
