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→filebench fileserver, dirty_ratio=1%
* HDD: WD VelociRaptor WD6000HLHX, 10000rpm
* fileserver test is read whole file + append + write whole file test ran on 10000 files in X threads
* filebench fails to run fileserver test with O_DIRECT, so I tested it with tried to "disable" page cache using dirty_ratio=1% and ran tests like this:
<code-bash>
50.0 1317
64.0 1163
ENDDATASET
</plot>
== [http://sourceforge.net/projects/filebench/ filebench] fileserver, dirty_ratio=20% ==
* HDD: WD VelociRaptor WD6000HLHX, 10000rpm
* Same test but ran with default 20% dirty_ratio setting. It's clearly seen that the system was using page cache extensively.
<plot>
set xrange [1:64]
set logscale x
set xtics (1, 2, 4, 8, 16, 32, 50, 64)
set yrange [0:3200]
set xlabel 'threads'
set ylabel 'ops/s (more is better)'
set xzeroaxis
set grid ytics
set style fill solid 1.0 noborder
set boxwidth 0.7 relative
plot 'xfs.dat' using 1:2 title 'XFS' with linespoints, 'ext4.dat' using 1:2 title 'ext4' with linespoints
DATASET xfs
1.0 7755
2.0 3796
4.0 3333
8.0 3320
16.0 3559
32.0 3653
50.0 2650
64.0 1671
ENDDATASET
DATASET ext4
1.0 16415
2.0 4136
4.0 4108
8.0 4026
16.0 3570
32.0 3147
50.0 2632
64.0 2778
ENDDATASET
</plot>
