From nobody Sat Feb 7 11:39:20 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2B401392C46; Tue, 13 Jan 2026 15:27:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768318056; cv=none; b=FtlywKKzb8aPGWj3lxsBsNHZdSAEHrKT23Mxl1aXAtQajlM1fDafgs89JESwsdBUHf04mXY0TcXuq0Mbxww6Zg/y8qWCESTkjuMXxjbtQ21uArpVPolfKTM+DgcONo5DfpV6Tve90x28fYiz1Rr18RtHwg95ZjbHqa0GT1xhCiM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768318056; c=relaxed/simple; bh=ZmJrAkMA9Irtz6OhLBZFE9S6wzn9oxN2fIfGy091mqs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IntY2JYnrj7DA/uguqwns/SCZdcKn7LXO1pVjt/rHycmGchLwwqFaJoJK4V3eTrz/bdbqTcTbpxHYALaUg030w6D7Bz2JpYcvUoZhu1ytjhRB0WBdiUS6UTStGFjmiZ5Rkn//dI8XZoKxJCKcUNAqCgM6IQw65JXvl/jJ+Fwlo0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QbKz/WvZ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QbKz/WvZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C97C6C19421; Tue, 13 Jan 2026 15:27:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1768318054; bh=ZmJrAkMA9Irtz6OhLBZFE9S6wzn9oxN2fIfGy091mqs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QbKz/WvZSBUAf7ErFfDMyIrvtRdGi7BE8mJZkAoVw+9dngIBXggRh0/SXNXLO0k5j 0y05XEwmUbLtA0ZMkjsp1RJ3840rkwwpZmnzxnCv9PnMkWzdR2LyQIrxGuhgdbQV5e hdOyvmKV/84XqF0TwTVJflLYzgJp5feHdBlmkqoGxfGCTvbd6S5BjYgh1cPWBQRnWC pscrF2vTCU/q+j2+xq3tib+MHqM3uygZTYqB8lsiM0Xx1b9o7VEgDjp1dxyhEPO6cP gIJtE7TZb31/2wsfsA1rp4zOwLOabR45EF4qSEtFqorzu38cLfJ5De1HPsDYpLp6jq TLPrD4cR7us2A== From: SeongJae Park To: Andrew Morton Cc: SeongJae Park , "Liam R. 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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Document a newly added DAMON_LRU_SORT module parameter for using monitoring intervals auto-tuning feature of DAMON. Signed-off-by: SeongJae Park Acked-by: wang lian --- 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/Documentatio= n/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 =20 Disabled by default. =20 +Auto-tune monitoring intervals +------------------------------ + +If this parameter is set as ``Y``, DAMON_LRU_SORT automatically tunes DAMO= N's +sampling and aggregation intervals. The auto-tuning aims to capture meani= ngful +amount of access events in each DAMON-snapshot, while keeping the sampling +interval 5 milliseconds in minimum, and 10 seconds in maximum. Setting th= is as +``N`` disables the auto-tuning. + +Disabled by default. + filter_young_pages ------------------ =20 --=20 2.47.3