On Wed, Aug 09, 2017 at 12:11:18AM -0700, Omar Sandoval wrote:
> On Wed, Aug 09, 2017 at 10:32:52AM +0800, Ming Lei wrote:
> > On Wed, Aug 9, 2017 at 8:11 AM, Omar Sandoval wrote:
> > > On Sat, Aug 05, 2017 at 02:56:46PM +0800, Ming Lei wrote:
> > >> When hw queue is busy, we shouldn't take reques
On Wed, Aug 09, 2017 at 12:11:18AM -0700, Omar Sandoval wrote:
> On Wed, Aug 09, 2017 at 10:32:52AM +0800, Ming Lei wrote:
> > On Wed, Aug 9, 2017 at 8:11 AM, Omar Sandoval wrote:
> > > On Sat, Aug 05, 2017 at 02:56:46PM +0800, Ming Lei wrote:
> > >> When hw queue is busy, we shouldn't take reques
On Wed, Aug 09, 2017 at 10:32:52AM +0800, Ming Lei wrote:
> On Wed, Aug 9, 2017 at 8:11 AM, Omar Sandoval wrote:
> > On Sat, Aug 05, 2017 at 02:56:46PM +0800, Ming Lei wrote:
> >> When hw queue is busy, we shouldn't take requests from
> >> scheduler queue any more, otherwise IO merge will be
> >>
On Wed, Aug 9, 2017 at 8:11 AM, Omar Sandoval wrote:
> On Sat, Aug 05, 2017 at 02:56:46PM +0800, Ming Lei wrote:
>> When hw queue is busy, we shouldn't take requests from
>> scheduler queue any more, otherwise IO merge will be
>> difficult to do.
>>
>> This patch fixes the awful IO performance on
On Sat, Aug 05, 2017 at 02:56:46PM +0800, Ming Lei wrote:
> When hw queue is busy, we shouldn't take requests from
> scheduler queue any more, otherwise IO merge will be
> difficult to do.
>
> This patch fixes the awful IO performance on some
> SCSI devices(lpfc, qla2xxx, ...) when mq-deadline/kyb
When hw queue is busy, we shouldn't take requests from
scheduler queue any more, otherwise IO merge will be
difficult to do.
This patch fixes the awful IO performance on some
SCSI devices(lpfc, qla2xxx, ...) when mq-deadline/kyber
is used by not taking requests if hw queue is busy.
Reviewed-by: B