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b=oEpZf6YGC00awkpS9HBD5IJQLRQP7aS9Hr28VHy5mhMEUfdegKRanwpS9kdyQGPwL lk5gWtPSE2VEJkuIXe+Nd5SLn6Pg2Y1Urol3zP/Xo6CtXp11pFeW9Pg8Ts7FvNcOXO 48o0wPg3dfrK8Ml8IRIweokfBtF/llzafeItOr6sy58iITHdNqJRWWGhvCFlFgFytQ qVsxj4svQGM577RRWUnKh4doCt95QklXiEVRB1hgG8HzmeIMMherYnglnYo2qVDMvi PWXwNsnNJdLUe6CpEYNRbvuIiwX0giHc2YtNeeKss9iqaGB8x1huzQf50s0fNaX1G2 9D9C/LqmUicrw== From: SeongJae Park To: Cc: SeongJae Park , Andrew Morton , Jonathan Corbet , damon@lists.linux.dev, kernel-team@meta.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 09/11] Docs/admin-guide/mm/damon/lru_sort: document active_mem_bp parameter Date: Sat, 28 Jun 2025 09:51:42 -0700 Message-Id: <20250628165144.55528-10-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250628165144.55528-1-sj@kernel.org> References: <20250628165144.55528-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 9D75A20003 X-Stat-Signature: qnwyjwsy66yayxwpqufx6iur3a9yo3zx X-Rspam-User: X-HE-Tag: 1751129518-561997 X-HE-Meta: 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 kau38A9g slWMaJrm2RPGZWg8EIti4yh27K9epBB9+JU9ibgAsiyhaFq2Qm8ncKciR1/LcotX198vW92VvRH5EC5HGVg3VJo45nkbumEFWJ0bxjBqGXYZBRqNKj+KagCsrLHo0HAtn64foe7EUM2NV4TFHJn7M7zimZfbrWz8lGB54xJFQ9H7IopURTJmTZ357xLA9i3QnASdR8b0CrZ0mX+d2Al3Q8zRwAyHDbruQtgfADWp2XZZXrMKR0E2OzTogoQZeILK5nUBfOxWHGx26o6eU5FVpeFBNHw== 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 parameter for doing auto-tuning aiming an active to inactive memory size ratio. Signed-off-by: SeongJae Park --- Documentation/admin-guide/mm/damon/lru_sort.rst | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/Documentation/admin-guide/mm/damon/lru_sort.rst b/Documentation/admin-guide/mm/damon/lru_sort.rst index 18fa73a59f62..ca4e071b3159 100644 --- a/Documentation/admin-guide/mm/damon/lru_sort.rst +++ b/Documentation/admin-guide/mm/damon/lru_sort.rst @@ -79,6 +79,18 @@ of parametrs except ``enabled`` again. Once the re-reading is done, this parameter is set as ``N``. If invalid parameters are found while the re-reading, DAMON_LRU_SORT will be disabled. +active_mem_bp +------------- + +Desired active to [in]active memory ratio in bp (1/10,000). + +While keeping the caps that set by other quotas, DAMON_LRU_SORT automatically +increases and decreases the effective level of the quota aiming the LRU +[de]prioritizations of the hot and cold memory resulting in this active to +[in]active memory ratio. Value zero means disabling this auto-tuning feature. + +Disabled by default. + filter_young_pages ------------------ -- 2.39.5