; Randomly read/write a block device file at queue depth 16. ; 40 % of read IOs are 64kB and 60% are 1MB. 100% of writes are 1MB. ; 100% of the 64kB reads are executed at the highest priority and ; all other IOs executed without a priority set. [global] filename=/dev/sda direct=1 write_lat_log=prio-run.log log_prio=1 [randrw] rw=randrw bssplit=64k/40:1024k/60,1024k/100 ioengine=libaio iodepth=16 cmdprio_bssplit=64k/100:1024k/0,1024k/0 cmdprio_class=1