Linux 3.18 File-System Performance Minimally Changed But Possible Regressions
With Compile Bench the performance was unchanged except for the XFS file-system where the performance managed to improve under Linux 3.18.
Lastly with PostMark there's a small improvement to note as well for XFS in Linux 3.18.
Those are the results I have to share today between Linux 3.17 and 3.18. The results in FIO are a bit troubling with showing performance regressions for all four tested file-systems on the Linux 3.18 kernel. However, these performance drops weren't found in the other disk benchmarks used. In some of the other tests, XFS had some improvements to show using the Linux 3.18 development kernel.
I'm in the process of running some Linux 3.17 vs. 3.18 disk/file-system benchmarks on some other hardware to see if there's the FIO performance regressions there as well. Stay tuned to Phoronix for updates; until then be sure to check out the recent Linux RAID comparison.
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