Btrfs RAID: Linux 3.10 To Linux 3.18 Benchmarks
Written by Michael Larabel in Storage on 26 October 2014. Page 4 of 4. 17 Comments

With Compile Bench we're finally back to seeing some interesting results... Sadly though, the best performance wasn't found with the latest Linux kernel but rather with Linux 3.12. For this Btrfs RAID0 HDD array, Linux 3.12 (and 3.13) were noticeably much faster than the other kernels benchmarked. At least with Linux 3.18-rc1 the result is ahead of 3.10/3.11.

In ending our test results with PostMark, at least here the performance steadily improved between Linux 3.10 and 3.18-rc1. For PostMark, the Btrfs dual-disk RAID0 HDD array was the fastest with Linux 3.18-rc1 followed by Linux 3.17.

It's unfortunate that in a few of the tests it appears the Btrfs performance has regressed, but overall the RAID0 HDD performance was good since Linux 3.10 and in a few cases show measurable improvements with the more recent kernel releases. Our next installation of Btrfs RAID benchmarking will involve four Intel solid-state drives as we stress them in all available (and experimental) Btrfs RAID modes. Any feedback or other suggestions is welcome by posting in our forums, contacting me, or tweeting.

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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 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 or contacted via

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