On Fri, Feb 03, 2023 at 04:00:05PM +0530, Pankaj Raghav wrote: > Hi Jens, > brd is one of the few block drivers that still uses submit_bio instead > of blk-mq framework. The following patch converts brd to start using > blk-mq framework. Performance gains are pretty evident for read workloads. > The performance numbers are also attached as a part of > the commit log. > > Performance (WD=[read|randread|write|randwrite]): > $ modprobe brd rd_size=1048576 rd_nr=1 > $ echo "none" > /sys/block/ram0/queue/scheduler > $ fio --name=<WD> --ioengine=io_uring --iodepth=64 --rw=<WD> --size=1G \ > --io_size=20G --loop=4 --cpus_allowed=1 --filename=/dev/ram0 --iodepth=64 > --direct=[0/1] > > --direct=0 Can you share perf data on other non-io_uring engine often used? The thing is that we still have lots of non-io_uring workloads, which can't be hurt now. Thanks Ming
