UFS vs. ZFS File-System Performance On FreeBSD 9.0
Written by Michael Larabel in BSD on 12 December 2011 at 10:22 AM EST. 3 Comments
Back in January I posted some ZFS, HAMMER, and Btrfs file-system benchmarks and in July of last year FreeBSD ZFS benchmarks, but for those wanting a new look at the ZFS file-system under FreeBSD 9.0, here are some updated numbers.

UFS remains the default file-system choice in FreeBSD 9.0 and those based upon FreeBSD like PC-BSD and Debian GNU/kFreeBSD, however, the ZFS file-system can be selected at install-time.

Found in the FreeBSD 9.0 kernel is ZFS v28, which adds features like RAID-Z3 (triple parity), de-duplication support, better recovery support, snapshot-level diffs, and zpool split support, among other features (details in this developer's blog post).

For those wondering how UFS compares to ZFS with the FreeBSD 9.0 kernel, I've run some disk benchmarks this weekend using PC-BSD 9.0 RC2 while finishing up the 3.6-Arendal validation, so just sharing these quick results for those interested.

The PC-BSD 9.0 installation was done in its stock configuration for each file-system with the only difference between installs is changing the root file-system from UFS to ZFS. The system being used for testing was build around an AMD Fusion A8-3850 "Llano" APU with an OCZ Vertex 2 SSD.

Those interested in the UFS vs. ZFS FreeBSD/PC-BSD 9.0 benchmarks can find them in full on OpenBenchmarking.org.

There's also some other AMD Fusion FreeBSD 9.0 benchmarks for those interested in the non-disk performance. However, due to the lack of any AMD Catalyst driver port to FreeBSD and the latest open-source Radeon graphics stack not being ported to FreeBSD current either, it doesn't make too much sense to use an AMD Fusion setup in a production capacity under any BSD. With AMD Fusion on FreeBSD you are just left with the VESA driver and the Mesa classic software rasterizer.

Other recent Phoronix tests under FreeBSD 9.0 include a look at the Intel Sandy Bridge performance and Debian GNU/kFreeBSD benchmarks with the 9.0 development kernel.

About The Author
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Michael Larabel is the principal author of Phoronix.com 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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