| Jens Axboe | de14154 | 2009-04-22 09:47:43 +0200 | [diff] [blame] | 1 | # Do some important numbers on SSD drives, to gauge what kind of |
| 2 | # performance you might get out of them. |
| 3 | # |
| 4 | # Sequential read and write speeds are tested, these are expected to be |
| 5 | # high. Random reads should also be fast, random writes are where crap |
| 6 | # drives are usually separated from the good drives. |
| 7 | # |
| 8 | # This uses a queue depth of 4. New SATA SSD's will support up to 32 |
| 9 | # in flight commands, so it may also be interesting to increase the queue |
| 10 | # depth and compare. Note that most real-life usage will not see that |
| 11 | # large of a queue depth, so 4 is more representative of normal use. |
| 12 | # |
| 13 | [global] |
| 14 | bs=4k |
| 15 | ioengine=libaio |
| 16 | iodepth=4 |
| 17 | size=1g |
| 18 | direct=1 |
| 19 | runtime=60 |
| 20 | directory=/mount-point-of-ssd |
| 21 | filename=ssd.test.file |
| 22 | |
| 23 | [seq-read] |
| 24 | rw=read |
| 25 | stonewall |
| 26 | |
| 27 | [rand-read] |
| 28 | rw=randread |
| 29 | stonewall |
| 30 | |
| 31 | [seq-write] |
| 32 | rw=write |
| 33 | stonewall |
| 34 | |
| 35 | [rand-write] |
| 36 | rw=randwrite |
| 37 | stonewall |