On Tue, May 2, 2017 at 10:07 AM, Sedat Dilek <sedat.dilek@xxxxxxxxx> wrote: > On Tue, May 2, 2017 at 10:00 AM, Markus Trippelsdorf > <markus@xxxxxxxxxxxxxxx> wrote: >> On 2017.05.02 at 09:54 +0200, Sedat Dilek wrote: >>> Hi, >>> >>> I want to play with BFQ. >>> >>> My base is block-next as of 28-Apr-2017. >>> >>> First I looked through the Kconfigs. >>> What is a good setting? >>> Built as module? >>> >>> How can I switch the IO-scheduler - real-time? >>> >>> Not sure if the attached patches make sense (right now). >> >> No, it doesn't make sense at all. >> BFQ is a mq scheduler. To use it you should enable >> SCSI_MQ_DEFAULT. And then you can switch schedulers like: >> >> echo "kyber" > /sys/block/sda/queue/scheduler >> echo "bfq" > /sys/block/sdb/queue/scheduler >> > > Great, I got these informations before starting a kernel-build. > > So, I have now... > > $ ./scripts/diffconfig /boot/config-4.11.0-1-iniza-amd64 .config > -BLK_DEV_HD n > SCSI_MQ_DEFAULT n -> y > +BFQ_GROUP_IOSCHED y > +BLK_DEV_THROTTLING_LOW n > +IOSCHED_BFQ y > +MQ_IOSCHED_KYBER y > > Thanks, Markus. > This worked... # cat /sys/block/sda/queue/scheduler [mq-deadline] kyber bfq none # echo "bfq" > /sys/block/sda/queue/scheduler # cat /sys/block/sda/queue/scheduler mq-deadline kyber [bfq] none - sed@ -
