Hi John, On Tue, Oct 10, 2017 at 01:24:52PM +0100, John Garry wrote: > It's using cfq (for non-mq) and mq-deadline (obviously for mq). Please be aware that cfq and mq-deadline are _not_ comparable, for a realistic comparasion please use deadline and mq-deadline or cfq and bfq. > root@(none)$ pwd > /sys/devices/platform/HISI0162:01/host0/port-0:0/expander-0:0/port-0:0:7/end_device-0:0:7 > root@(none)$ more ./target0:0:3/0:0:3:0/block/sdd/queue/scheduler > noop [cfq] Maybe missing CONFIG_IOSCHED_DEADLINE? Thanks, Johannes -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel