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→sysbench random read/write 16K in 8M files
* HDD: WD Scorpio Black 2.5" 750GB 7200rpm
* sysbench was ran with O_DIRECT, so the page cache should also have no impact.
* It's It’s not a filesystem benchmark at all! It tests disk performance because it holds ALL prepared files open during the test. It only shows us that XFS isn't isn’t slowing down the direct access to the underlying device (which is also good, of course)...…* Probably because of the above note, the filesystems don’t differ, and the results are totally same for 1x 1GB file, and 128x 8MB files files… and very similar for 3072x 16KB files(next test below).
<plot>
plot 'xfs.dat' using 1:2 title 'XFS' with linespoints, 'ext4.dat' using 1:2 title 'ext4' with linespoints
DATASET xfs
1.0 148.132.0 160.014.0 193.008.0 205.6216.0 208.2532.0 203.8864.0 204.35
ENDDATASET
DATASET ext4