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| author | Sheng Yong <shengyong1@huawei.com> | 2017-11-22 18:23:38 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-02-07 17:53:28 -0800 |
| commit | 47ee9b259811529a4653910f39648dbecd6bf89c (patch) | |
| tree | 40ce1f31c3fe751f0e3af927992c158f3eb7b18b /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 55e2f89181ceff5dcebd87c0138d64dba8c3644d (diff) | |
f2fs: introduce sysfs readdir_ra to readahead inode block in readdir
This patch introduces a sysfs interface readdir_ra to enable/disable
readaheading inode block in f2fs_readdir. When readdir_ra is enabled,
it improves the performance of "readdir + stat".
For 300,000 files:
time find /data/test > /dev/null
disable readdir_ra: 1m25.69s real 0m01.94s user 0m50.80s system
enable readdir_ra: 0m18.55s real 0m00.44s user 0m15.39s system
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions