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Howlett" , David Hildenbrand , Jonathan Corbet , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Suren Baghdasaryan , Vlastimil Babka , damon@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 11/11] Docs/admin-guide/mm/damon/lru_sort: document intervals autotuning Date: Tue, 13 Jan 2026 07:27:16 -0800 Message-ID: <20260113152717.70459-12-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260113152717.70459-1-sj@kernel.org> References: <20260113152717.70459-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: mynhzeyiazojq9kc31yy1jdw7bzcmpis X-Rspamd-Queue-Id: 3AEFF140006 X-Rspamd-Server: rspam04 X-HE-Tag: 1768318055-988065 X-HE-Meta: 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 YzA2WOcK AObMMlR0CnZAPziEgTZgvwx8vmHCjxoguwu/MT2oz58tjWYXxAIm6SdrlfRgxfC25ewF5y5V+4AJp5UTH+gBMjVUywX9GWe4cL71XN78eYE9IjTNBcsMFS/OvaIqaaHE0s19TLIfCRNVCNkZ1Ck5NGX3oWi19Oy7TQG9CBQei0p4YriLObcoyKRINDSQKksOgCUF9T3LDdh5UxJoDmH2XPLHJh10FhAC2NTFfQ+4YstrzhL+SgKaNswC67IvlogL284qPoBT8N0VizwEqvS9L8XwC0vLsk15dzAgl X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Document a newly added DAMON_LRU_SORT module parameter for using monitoring intervals auto-tuning feature of DAMON. Signed-off-by: SeongJae Park --- Documentation/admin-guide/mm/damon/lru_sort.rst | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/admin-guide/mm/damon/lru_sort.rst b/Documentation/admin-guide/mm/damon/lru_sort.rst index 6af3ab5579a3..20a8378d5a94 100644 --- a/Documentation/admin-guide/mm/damon/lru_sort.rst +++ b/Documentation/admin-guide/mm/damon/lru_sort.rst @@ -91,6 +91,17 @@ increases and decreases the effective level of the quota aiming the LRU Disabled by default. +Auto-tune monitoring intervals +------------------------------ + +If this parameter is set as ``Y``, DAMON_LRU_SORT automatically tunes DAMON's +sampling and aggregation intervals. The auto-tuning aims to capture meaningful +amount of access events in each DAMON-snapshot, while keeping the sampling +interval 5 milliseconds in minimum, and 10 seconds in maximum. Setting this as +``N`` disables the auto-tuning. + +Disabled by default. + filter_young_pages ------------------ -- 2.47.3