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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-03-03 11:28:40 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2014-03-03 11:28:40 +0900 |
| commit | c81bf1c84f6924678d088d68e131ff1f4d2d9002 (patch) | |
| tree | 0cc16f1a1baa738e97fab5df5f3607a92a4f6cba /tools/perf/scripts/python/net_dropmonitor.py | |
| parent | 9cf3c3898a274ca637b88ad01b0830550ee2d318 (diff) | |
f2fs: fix to write node pages with WRITE_SYNC
This patch fixes performance regression of dbench reported by
Alex <hbx7d@yandex.com>.
This issue was revealed by Phoronix tests results:
http://www.phoronix.com/scan.php?page=article&item=linux_314_ssdfs&num=2
It turns out that we need to assign WRITE_SYNC to the node writes, if
fsync is triggered.
The performance numbers are like below, which is measured by Alex.
1. 355MB/s ext4
2. 225MB/s f2fs : WRITE for node writes
3. 525MB/s f2fs : WRITE_SYNC for node writes
Reported-And-Tested-by: Alex <hbx7d@yandex.com>.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'tools/perf/scripts/python/net_dropmonitor.py')
0 files changed, 0 insertions, 0 deletions