# Do some important numbers on SSD drives, to gauge what kind of # performance you might get out of them. # # Sequential read and write speeds are tested, these are expected to be # high. Random reads should also be fast, random writes are where crap # drives are usually separated from the good drives. # # This uses a queue depth of 4. New SATA SSD's will support up to 32 # in flight commands, so it may also be interesting to increase the queue # depth and compare. Note that most real-life usage will not see that # large of a queue depth, so 4 is more representative of normal use. # [global] bs=4k ioengine=libaio iodepth=4 size=1g direct=1 runtime=60 directory=/mount-point-of-ssd filename=ssd.test.file [seq-read] rw=read stonewall [rand-read] rw=randread stonewall [seq-write] rw=write stonewall [rand-write] rw=randwrite stonewall