diff options
| author | SeongJae Park <sj@kernel.org> | 2024-02-19 11:44:31 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-02-23 17:48:30 -0800 |
| commit | 75c40c2509e797830dd90d92568262ba69a89c9c (patch) | |
| tree | 42bc940403a71ebde7052cfdc4cf4d5c1c63c61c /Documentation | |
| parent | 7ce55f8ffdedc0e59d53f7003b7bd912b19918a7 (diff) | |
Docs/admin-guide/mm/damon/reclaim: document auto-tuning parameters
Update DAMON_RECLAIM usage document for the user/self feedback based
auto-tuning of the quota.
Link: https://lkml.kernel.org/r/20240219194431.159606-21-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/mm/damon/reclaim.rst | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Documentation/admin-guide/mm/damon/reclaim.rst b/Documentation/admin-guide/mm/damon/reclaim.rst index 343e25b252f4..af05ae617018 100644 --- a/Documentation/admin-guide/mm/damon/reclaim.rst +++ b/Documentation/admin-guide/mm/damon/reclaim.rst @@ -117,6 +117,33 @@ milliseconds. 1 second by default. +quota_mem_pressure_us +--------------------- + +Desired level of memory pressure-stall time in microseconds. + +While keeping the caps that set by other quotas, DAMON_RECLAIM automatically +increases and decreases the effective level of the quota aiming this level of +memory pressure is incurred. System-wide ``some`` memory PSI in microseconds +per quota reset interval (``quota_reset_interval_ms``) is collected and +compared to this value to see if the aim is satisfied. Value zero means +disabling this auto-tuning feature. + +Disabled by default. + +quota_autotune_feedback +----------------------- + +User-specifiable feedback for auto-tuning of the effective quota. + +While keeping the caps that set by other quotas, DAMON_RECLAIM automatically +increases and decreases the effective level of the quota aiming receiving this +feedback of value ``10,000`` from the user. DAMON_RECLAIM assumes the feedback +value and the quota are positively proportional. Value zero means disabling +this auto-tuning feature. + +Disabled by default. + wmarks_interval --------------- |