From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C08E5C7EE39 for ; Sat, 28 Jun 2025 16:52:21 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 9FB438D0007; Sat, 28 Jun 2025 12:52:02 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9D3618D0003; Sat, 28 Jun 2025 12:52:02 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8C1AC8D0007; Sat, 28 Jun 2025 12:52:02 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 73B498D0003 for ; Sat, 28 Jun 2025 12:52:02 -0400 (EDT) Received: from smtpin14.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 4B0FC1A0415 for ; Sat, 28 Jun 2025 16:52:02 +0000 (UTC) X-FDA: 83605401684.14.7A9C1A2 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf03.hostedemail.com (Postfix) with ESMTP id BB7B920003 for ; Sat, 28 Jun 2025 16:52:00 +0000 (UTC) Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=DS5QeNIM; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf03.hostedemail.com: domain of sj@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=sj@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1751129520; a=rsa-sha256; cv=none; b=0bOApZqnwpiDGhPdfFWat9fMPPjQyPhA6nUDkWWRb6VsQmXqzq5ZWwmxflu+cNmdXmw1hL RWPX4hZhRR7LSPUMCfYSbvVz3iGWfoia70ZCM8id/9eXDxXx5haHM3bZnPSOo+EHclGYiW Ko1cEqbMvkN/FNI1+U8GoATZvo+PS1g= ARC-Authentication-Results: i=1; imf03.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=DS5QeNIM; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf03.hostedemail.com: domain of sj@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=sj@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1751129520; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=Ic9BwheBGQHk3J5Z+WIZyoY1Z7Zq8/3gVB8JhjlUQjk=; b=vS5VrqbELttHNmLD438n85ZnfFWkAOsgCzQEDYq8G8ZKXWMZTyllnAHnHVUxghLz/h/aC1 NtHUIouvsCcYErvFLKvN+zcThaY1agfNrKFJFabZiE1gNv8FXVVKZx84PfQQpuyhzRzR/C 5irDd7fIkfRkk6UWIwFrg9ZBoH01u00= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id BBA495C547D; Sat, 28 Jun 2025 16:51:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 46876C4CEEA; Sat, 28 Jun 2025 16:51:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751129519; bh=fbG+KWln8sAPRrugQfWweISG0dHsqG1V9oMoVBcHL/c=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=DS5QeNIM5rDCiErt/eCcWwMgF688xD5WMGg+fgZXgr0iH8Vc2BlIJI2Xo8MJoi/pi SQmYij/3HDK/RMJex+bjiE/yfsXdHLWXMGCq5+BnPqizg1/tu0ZhuuyWrZq50bjQan tvt3PBUq5oXPSXmyB97t17rlKvbiFa2rYhkV0LVoQjBdy4OkMOe88R7SfuyLYLye84 L4gzSp4fdatQmqdN32QeLpODeynJiU4N8Q178q8DfVMO2K4iWh13aMF/DG08xWmcF/ Kj35aPZ1VxuuypVPDslwt12oFLwWHX58mKerXkaA4fgoVePzk6D9hjtYb+WFFjpxlP HPG9Dxbs2UpPg== 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 11/11] Docs/admin-guide/mm/damon/lru_sort: document intervals autotuning Date: Sat, 28 Jun 2025 09:51:44 -0700 Message-Id: <20250628165144.55528-12-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-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: BB7B920003 X-Stat-Signature: gdrgf8kp6oh5pjnux5gjwn9c5f7ii5u6 X-HE-Tag: 1751129520-961086 X-HE-Meta: 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 6nk/8w8t aaI0BIVgzFoc2J1LZ+noJCQwfVl4RU0vXPmJuI+PXara05g9AXAqqRzEK9O4cDaEhhpfd7JCO0fRHxYzFI8VCMdTLjEZblIZgYnLQQRkWUsjfL8ros1JvchT/S92LWIXQqDhFfDidemM7FYzU8zTkZ7y9x7BwRl8ZhUzG1o7Wp3NUJXV2PVyjNQU55J7JPMhYPeEVf9fTTZimcNQEqR/ccGPzM22P6afBFOpk1cFoD5zYifl+NYm2mVL/dWOo2R0rh17cyrpAg7ieFOg52lI6h2P5dkuaj6rSkiGETEzpi3d+zfot+DA0pdsA9okaxfXatwxa 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 ca4e071b3159..f9dfa8255dda 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 tune 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 minimu, and 10 seconds in maximum. Setting this as +``Y`` disables the auto-tuning. + +Disabled by default. + filter_young_pages ------------------ -- 2.39.5