Linux I/O Scheduler Comparison On The Linux 3.4 Desktop
Written by Michael Larabel in Storage on 11 May 2012. Page 4 of 4. 28 Comments

With an IOzone write test, CFQ continued doing the best overall for the HDD and SSD systems.

The Threaded I/O Tester results were scattered while the CFQ scheduler tended to produce the sanest results overall.

For most workloads, the Completely Fair Queuing (CFQ) scheduler tended to be the best Linux I/O scheduler overall for these HDD and SSD systems. It is for the higher-end SSDs on PCI-E where the default I/O scheduler will change, but this article is primarily about delivering some Linux desktop scheduler results. Hardware permitting, in another article will be the workstation/server-focused scheduler results.

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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 10,000 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 or contacted via

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