Linux 4.12 I/O Scheduler Tests With A HDD & SSD

With six DBench clients running, MQ BFQ was slower than the rest while there wasn't a large variation among the other I/O schedulers tested on Linux 4.12.

IOzone with noop was the fastest for this write test while the other I/O scheduler results were scattered.

With PostgreSQL, Facebook's Kyber I/O scheduler was the fastest on the consumer SSD followed by the deadline I/O scheduler. The results between the HDD tests were relatively close.

Those wanting to dig through these numbers in more details can see this OpenBenchmarking.org result file.