XFS on Linux 3.4 for the Intel SSD with Sandy Bridge processor also regressed for the eight thread, 64MB random write benchmark with the Threaded I/O Tester.
CompileBench also showed performance regressions for the XFS file-system with the Linux 3.4 kernel. The Btrfs and EXT4 results were not too interesting although the evolutionary EXT4 file-system continued to run well ahead of Btrfs for most workloads.
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