Hi, Christoph On 06/19, Christoph Hellwig wrote: >On Mon, Jun 19, 2017 at 04:52:36PM +0800, Ye Xiaolong wrote: >> >I've not seen a compile-time option for the MQ I/O scheduler (unlike >> >the legacy one), so the way to change it would be to echo the name to >> >/sys/block/<device>/queue/scheduler >> >> echo mq-deadline > /sys/block/<device>/queue/scheduler ? >> >> I'll try and post the results once I get it. > >Thanks! I've re-run the test and cat /sys/block/sda/queue/scheduler and /sys/block/sda/queue/scheduler, and both showed "[mq-deadline] kyber none", Does it mean they have already set as 'mq-deadline'? Thanks, Xiaolong