Ext4 vs XFS — различия между версиями
Материал из YourcmcWiki
м (→filebench fileserver, dirty_ratio=1%) |
м (→filebench fileserver, dirty_ratio=1%) |
||
| Строка 119: | Строка 119: | ||
* HDD: WD VelociRaptor WD6000HLHX, 10000rpm | * HDD: WD VelociRaptor WD6000HLHX, 10000rpm | ||
* fileserver test is read whole file + append + write whole file test ran on 10000 files in X threads | * 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 | + | * filebench fails to run fileserver test with O_DIRECT, so I tried to "disable" page cache using dirty_ratio=1% and ran tests like this: |
<code-bash> | <code-bash> | ||
| Строка 172: | Строка 172: | ||
50.0 1317 | 50.0 1317 | ||
64.0 1163 | 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 | ENDDATASET | ||
</plot> | </plot> | ||
Версия 19:02, 19 декабря 2013
Содержание
Copy kernel source (from SSD with warm cache)
HDD: WD Scorpio Black 2.5" 750GB 7200rpm
- xfs 1 thread: 12.348s
- xfs 4 threads: 65.883s
- ext4 1 thread: 7.662s
- ext4 4 threads: 33.876s
FS-Mark 3.3, creating 1M files
HDD: WD Scorpio Black 2.5" 750GB 7200rpm
sysbench random read/write 16K in 8M files
HDD: WD Scorpio Black 2.5" 750GB 7200rpm
sysbench random read/write 16K in 16K files
HDD: WD Scorpio Black 2.5" 750GB 7200rpm
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 tried to "disable" page cache using dirty_ratio=1% and ran tests like this:
echo 1 > /proc/sys/vm/dirty_ratio echo 0 > /proc/sys/vm/dirty_bytes echo 0 > /proc/sys/kernel/randomize_va_space for i in 1 2 4 8 16 32 50 64; do echo echo "== $i threads ==" echo echo 1 > /proc/sys/vm/drop_caches sync filebench <<EOF load fileserver set \$dir=/media/sdd set \$nthreads=$i run 30 EOF done echo 20 > /proc/sys/vm/dirty_ratio
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.
