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Btrfs Gets Performance Improvements In Linux 3.12

Linux Kernel

Published on 13 September 2013 02:47 AM EDT
Written by Michael Larabel in Linux Kernel
6 Comments

We're late into the Linux 3.12 merge window and other prominent file-systems were already updated but on Thursday evening the Btrfs updates for the 3.12 kernel were finally published. With the new Btrfs pull does come some notable changes for this next-generation Linux file-system.

With the Btrfs pull request for the Linux 3.12 kernel merge window are a large number of fixes, performance improvements, and clean-ups.

As noted by Chris Mason in the pull request, there's also subvolume UUID indexing to speed up send/receive with many sub-volumes/snapshots. This indexing works around a performance issue that ended up getting baked into the Btrfs disk format.

Another committed feature for Btrfs in Linux 3.12 is de-duplication (dedup) support while the file-system is mounted and active but not being done inline during file I/O operations.

Btrfs benchmarks on the Linux 3.12 kernel are forthcoming on Phoronix, plus other interesting Linux kernel benchmarks.

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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