Benchmarks Of The Official KQ ZFS Linux Module
With the CompileBench test profile, the file-system ranking have not changed since November. ZFS is still faster than XFS here, but multiple times slower than Btrfs and EXT4.
When running IOzone with a 4GB write test using 64Kb blocks, the ZFS Linux performance was on par with XFS, but nearly 20% slower than EXT4 and Btrfs.
When looking at the 4GB read performance with IOzone, the read performance was quite close between EXT4, Btrfs, XFS, and ZFS with all four of them reading at the same general speed.