IOMeter is another open source synthetic benchmarking tool which is able to simulate the various loads placed on hard drive and solid state drive technology.
We test with both random read and write 4k tests, as shown above. There are many ways to measure the IOPS performance of a Solid State Drive, so our results will sometimes differ from manufacturer’s quoted ratings. We do test all drives in exactly the same way, so the results are directly comparable.
Its swings and roundabouts with the random 4K figures. Under test the drive produced 155,126 IOPS for writes which is down on the official 165,000 IOPS. On the other hand the read figure of 210,045 IOPS surpassed the official 190,000 IOPS rated figure.