On Thu, 2018-05-31 at 12:01 +0300, Sagi Grimberg wrote:
> On 05/21/2018 06:55 PM, Sergey Gorenko wrote:
> > The iSER driver reduces max_sectors. For example, if you load the
> > ib_iser module with max_sectors=1024, you will see that
> > /sys/class/block/<bdev>/queue/max_hw_sectors_kb is 508. It is an
> > incorrect value. The expected value is (max_sectors * sector_size) /
> > 1024 = 512.
> >
> > Reducing of max_sectors can cause performance degradation due to
> > unnecessary splitting of IO requests.
> >
> > The number of pages per MR has been fixed here, so there is no longer
> > any need to reduce max_sectors.
>
> Thanks Sergey, this looks good,
>
> Acked-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
>
Thanks, applied to for-next.
--
Doug Ledford <dledford@xxxxxxxxxx>
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