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Phoronix Test Suite

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Testing Out The Btrfs Mount Options On Linux 3.2

Michael Larabel

Published on 26 March 2012
Written by Michael Larabel
Page 4 of 4 - 23 Comments

When running an Iozone write test, Zlib and LZO compression led to significantly higher results, albeit it was using compression and mostly came down to being run in the system memory at speeds not sustainable by the SATA SSD.

With a 64MB random write test of 16 threads, the different mount options didn't have much of an impact on the Btrfs file-system performance aside from the free inode cache, which actually resulted in the random write performance suffering.

When running the Flexible I/O Tester, the auto-defrag performance suffered a great deal. Eventually auto-defrag will be enabled with Btrfs by default.

You can run your own file-system tests in your own software and hardware configuration in an automated and seamless manner using the Phoronix Test Suite with result sharing via OpenBenchmarking.org. Be sure to use Phoronix Test Suite 3.8-Bygland or newer for the new file-system reporting functionality.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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