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

Written by Michael Larabel in Storage on 2 July 2017 at 10:22 AM EDT. Page 3 of 3. 44 Comments.

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 result file.

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Michael Larabel

Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via