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>
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@ -117,6 +117,33 @@ milliseconds.
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1 second by default.
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1 second by default.
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quota_mem_pressure_us
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---------------------
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Desired level of memory pressure-stall time in microseconds.
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While keeping the caps that set by other quotas, DAMON_RECLAIM automatically
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increases and decreases the effective level of the quota aiming this level of
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memory pressure is incurred. System-wide ``some`` memory PSI in microseconds
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per quota reset interval (``quota_reset_interval_ms``) is collected and
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compared to this value to see if the aim is satisfied. Value zero means
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disabling this auto-tuning feature.
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Disabled by default.
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quota_autotune_feedback
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-----------------------
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User-specifiable feedback for auto-tuning of the effective quota.
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While keeping the caps that set by other quotas, DAMON_RECLAIM automatically
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increases and decreases the effective level of the quota aiming receiving this
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feedback of value ``10,000`` from the user. DAMON_RECLAIM assumes the feedback
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value and the quota are positively proportional. Value zero means disabling
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this auto-tuning feature.
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Disabled by default.
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wmarks_interval
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wmarks_interval
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---------------
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---------------
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