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| author | Daeho Jeong <daehojeong@google.com> | 2020-03-30 03:30:59 +0000 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-04-17 09:16:57 -0700 |
| commit | 2bc4bea33848e4c5f441fcec4a94497082c1cc9f (patch) | |
| tree | 5961f9444c2edbf0bbbbf9a48d63986fb85d870b /Documentation/ABI | |
| parent | da9953b729c12ece6d35fd15d236457eee679228 (diff) | |
| download | linux-2bc4bea33848e4c5f441fcec4a94497082c1cc9f.tar.gz linux-2bc4bea33848e4c5f441fcec4a94497082c1cc9f.tar.bz2 linux-2bc4bea33848e4c5f441fcec4a94497082c1cc9f.zip | |
f2fs: add tracepoint for f2fs iostat
Added a tracepoint to see iostat of f2fs. Default period of that
is 3 second. This tracepoint can be used to be monitoring
I/O statistics periodically.
Signed-off-by: Daeho Jeong <daehojeong@google.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-fs-f2fs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs index c8620ea7022a..427f5b45c67f 100644 --- a/Documentation/ABI/testing/sysfs-fs-f2fs +++ b/Documentation/ABI/testing/sysfs-fs-f2fs @@ -332,3 +332,9 @@ Description: Give a way to attach REQ_META|FUA to data writes * REQ_META | REQ_FUA | * 5 | 4 | 3 | 2 | 1 | 0 | * Cold | Warm | Hot | Cold | Warm | Hot | + +What: /sys/fs/f2fs/<disk>/iostat_period_ms +Date: April 2020 +Contact: "Daeho Jeong" <daehojeong@google.com> +Description: Give a way to change iostat_period time. 3secs by default. + The new iostat trace gives stats gap given the period. |