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| author | SeongJae Park <sj@kernel.org> | 2024-02-19 20:44:28 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-24 02:48:29 +0100 |
| commit | 57e88e86a167698978621a09719d716771430c48 (patch) | |
| tree | 1c787f32faeb68736b60526eaa07c60702c048e2 /Documentation/admin-guide | |
| parent | Docs/ABI/damon: document quota goal metric file (diff) | |
| download | linux-57e88e86a167698978621a09719d716771430c48.tar.xz linux-57e88e86a167698978621a09719d716771430c48.zip | |
Docs/admin-guide/mm/damon/usage: document quota goal metric file
Update DAMON usage document for the quota goal target_metric file.
[sj@kernel.org: fix a typo on the auto-tuning design reference link]
Link: https://lkml.kernel.org/r/20240221170852.55529-3-sj@kernel.org
Link: https://lkml.kernel.org/r/20240219194431.159606-18-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/mm/damon/usage.rst | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/admin-guide/mm/damon/usage.rst b/Documentation/admin-guide/mm/damon/usage.rst index a88cda52b095..6fce035fdbf5 100644 --- a/Documentation/admin-guide/mm/damon/usage.rst +++ b/Documentation/admin-guide/mm/damon/usage.rst @@ -86,7 +86,7 @@ comma (","). │ │ │ │ │ │ │ :ref:`quotas <sysfs_quotas>`/ms,bytes,reset_interval_ms,effective_bytes │ │ │ │ │ │ │ │ weights/sz_permil,nr_accesses_permil,age_permil │ │ │ │ │ │ │ │ :ref:`goals <sysfs_schemes_quota_goals>`/nr_goals - │ │ │ │ │ │ │ │ │ 0/target_value,current_value + │ │ │ │ │ │ │ │ │ 0/target_metric,target_value,current_value │ │ │ │ │ │ │ :ref:`watermarks <sysfs_watermarks>`/metric,interval_us,high,mid,low │ │ │ │ │ │ │ :ref:`filters <sysfs_filters>`/nr_filters │ │ │ │ │ │ │ │ 0/type,matching,memcg_id @@ -366,11 +366,11 @@ number (``N``) to the file creates the number of child directories named ``0`` to ``N-1``. Each directory represents each goal and current achievement. Among the multiple feedback, the best one is used. -Each goal directory contains two files, namely ``target_value`` and -``current_value``. Users can set and get any number to those files to set the -feedback. User space main workload's latency or throughput, system metrics -like free memory ratio or memory pressure stall time (PSI) could be example -metrics for the values. Note that users should write +Each goal directory contains three files, namely ``target_metric``, +``target_value`` and ``current_value``. Users can set and get the three +parameters for the quota auto-tuning goals that specified on the :ref:`design +doc <damon_design_damos_quotas_auto_tuning>` by writing to and reading from each +of the files. Note that users should further write ``commit_schemes_quota_goals`` to the ``state`` file of the :ref:`kdamond directory <sysfs_kdamond>` to pass the feedback to DAMON. |