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 43ADCC87FCC for ; Fri, 25 Jul 2025 00:45:05 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C548E8E00D0; Thu, 24 Jul 2025 20:45:04 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id C14D08E007C; Thu, 24 Jul 2025 20:45:04 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B524C8E00D0; Thu, 24 Jul 2025 20:45:04 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id A51368E007C for ; Thu, 24 Jul 2025 20:45:04 -0400 (EDT) Received: from smtpin21.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 52E0F1A0333 for ; Fri, 25 Jul 2025 00:45:04 +0000 (UTC) X-FDA: 83700942528.21.4D19AA9 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf10.hostedemail.com (Postfix) with ESMTP id 9949CC0004 for ; Fri, 25 Jul 2025 00:45:02 +0000 (UTC) Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Mx4P75kK; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf10.hostedemail.com: domain of tj@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=tj@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1753404302; a=rsa-sha256; cv=none; b=xZIcUWnUslwprcoom8JvXQ43m/0r/JaeFjEbP+atNZ3cfpv+T0Wqs2tz8pKAS94UNJpP8n aqjTuP4q6hYweS6SmMPjdCjnCQw0gHQDA0Hua86knzv9d9SDogt6EdgSKPKDULjThpsdc+ D7Fa/PmUHRR43+f/6HnWptjckCwKbG0= ARC-Authentication-Results: i=1; imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Mx4P75kK; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf10.hostedemail.com: domain of tj@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=tj@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1753404302; 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-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=gE99b4ZnSyea/VzCZeIPyKJzK2bS7p039WOOhhlx08g=; b=8d01vWTivFti0jz9JD8FSEFNpFm3YNiXgzkgxrFM6cDm1ibXrOZwtBcVjtbjFYplVJ5j6o ofB9OJz9LRgktnq9pxyfkH86V8lxNblNwX3ejAIT/08zWZtLkEDFHdyhNsT20I1xRDiQz4 jY6asIP6p2iHCdqXZYx5mEK+uzwSrX4= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 5FC375C6956; Fri, 25 Jul 2025 00:45:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id DBA47C4CEED; Fri, 25 Jul 2025 00:45:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753404301; bh=dvzxxFO1gaX+9xGTWwgKBCgV2b2CxVSK7tOnwNJFUio=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Mx4P75kKdF2V/aTgUjzyLBGy6f2MxQkesu7J3yxq3vEfAcB7ES6M60ybBRTtdBoS/ jolS/1xxvErQtFnIo0OQZVGIMAEjrOal3WiqWUDZP6BbIWS/Ila/lyf2dC2nSf/Gbj rq8WPXzQ3J5oTC62KScmoUJoOOZOcXtNfQOCRDNghJKTyrwUPsfByokTTShdldhSI6 ECrRz2veukkxssSq5AZPpWLseG8RxnO6UYjaU1lOpUkmRmGCHJFftVhjulI39Eh4fj 9neuKi7uot7S9R4FfwgtPHW9x2iGksCBRuTYjcBfB3adZMD8a1hBTI2Ym4HkHU7y9e l6dOJgW1jksGA== Date: Thu, 24 Jul 2025 14:44:59 -1000 From: Tejun Heo To: Daniel Sedlak Cc: Shakeel Butt , Michal =?iso-8859-1?Q?Koutn=FD?= , Kuniyuki Iwashima , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Jonathan Corbet , Neal Cardwell , David Ahern , Andrew Morton , Yosry Ahmed , linux-mm@kvack.org, netdev@vger.kernel.org, Johannes Weiner , Michal Hocko , Roman Gushchin , Muchun Song , cgroups@vger.kernel.org, Matyas Hurtik Subject: Re: [PATCH v3] memcg: expose socket memory pressure in a cgroup Message-ID: References: <4g63mbix4aut7ye7b7s4m5q7aewfxq542i2vygniow7l5a3zmd@bvis5wmifscy> <878ca484-a045-4abb-a5bd-7d5ae82607de@cdn77.com> <486bfabc-386c-4fdc-8903-d56ce207951f@cdn77.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <486bfabc-386c-4fdc-8903-d56ce207951f@cdn77.com> X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 9949CC0004 X-Stat-Signature: pfkjo9rejyy8k6ztofjx3xkiqthr1akx X-HE-Tag: 1753404302-27861 X-HE-Meta: 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 v/MqJvDQ 9kHud61slbEpbciKiyvnRKHgk/A5PydEF7GrpGYmrEkFiZL6IzWhrPcOTMUspiOnSJPXupcxuZzQ2UoXUnbvzQSF+I2p+L1lLVV/H95Q1Mohx1psY+fe2govZZbyJz/mRGjdPx0DSIFpD1xCZTNmVC/VskB47+bGnhrmOvU6QDzIQPmF81RLm6HigCdDkQXcVrbCDGjFf4ncP3/TR98WAI67L4A== 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: On Thu, Jul 24, 2025 at 10:43:27AM +0200, Daniel Sedlak wrote: ... > Currently, we know the following information: > > - we know when the pressure starts > - and we know when the pressure ends if not rearmed (start time + HZ) > > From that, we should be able to calculate a similar triplet to the pressure > endpoints in the cgroups (cpu|io|memory|irq).pressure. That is, how much % > of time on average was spent under pressure for avg10, avg60, avg300 i.e. > average pressure over the past 10 seconds, 60 seconds, and 300 seconds, > respectively. (+ total time spent under pressure) Let's just add the cumulative duration that socket pressure was present. Thanks. -- tejun