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 770CBC3064D for ; Mon, 24 Jun 2024 17:05:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D65F66B0395; Mon, 24 Jun 2024 13:05:43 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D15556B0398; Mon, 24 Jun 2024 13:05:43 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BB75A6B039A; Mon, 24 Jun 2024 13:05:43 -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 91D3B6B0395 for ; Mon, 24 Jun 2024 13:05:43 -0400 (EDT) Received: from smtpin09.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 4BC51A117F for ; Mon, 24 Jun 2024 17:05:43 +0000 (UTC) X-FDA: 82266408966.09.6896F8D Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by imf22.hostedemail.com (Postfix) with ESMTP id 5C303C0013 for ; Mon, 24 Jun 2024 17:05:41 +0000 (UTC) Authentication-Results: imf22.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=gH7V8VXe; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf22.hostedemail.com: domain of longman@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=longman@redhat.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1719248731; a=rsa-sha256; cv=none; b=KUzB18ZNmKbT5qW2cFbiwseyATkDvhZk13zRt8sOFXgiHDLCh3tvUgz8DlAKEIdiZIZc4C aS2dfo/XqDZI1gUnpqMZU74TNQTtnqGxmvB9y7BxwWyTOKz5iaO+ta3wsUEb5Ezpdc+FDy aD+rlqSOvmsAmI267UsrPEgFgD2oUGQ= ARC-Authentication-Results: i=1; imf22.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=gH7V8VXe; dmarc=pass (policy=none) header.from=redhat.com; spf=pass (imf22.hostedemail.com: domain of longman@redhat.com designates 170.10.133.124 as permitted sender) smtp.mailfrom=longman@redhat.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1719248731; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=0LBiPH3Y7aq/3vm3Rkxz0WXxU3vDkOw7NDED++iEpo4=; b=Eex2OkYcQLNgC7Oz9Mfi7axtcjv40RUQ19WNudC2kQvYWrtwELV84+ebv/1aSk0gD2eSYD eN+h1Wb5p3wAHvSzieX0Z48J2GQ6Rhcfdedm652bSLlPMjPvVqRarpuUY9MOAIZOZ9rLT9 9jA14GvRSZWQtq19PU6lvSiCiSg4AcE= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1719248740; h=from:from: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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0LBiPH3Y7aq/3vm3Rkxz0WXxU3vDkOw7NDED++iEpo4=; b=gH7V8VXeyAYShScBJr66Qu02mr4UEQ6mlrBKNj27ALklcB4kPHPVaa2gFOKogIiL+OmNrT 0g6TDBeYaZjj6i7hDhZ5PTDuG0q6Qe0/KMK89086bG/y/vu4BNtaFpEy7ar25p9yjtoPon ak2bt5jHMECUhZpCx+cRTA10/MN4Npc= Received: from mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-88-j72fES3LPGiQGvOqEetYdg-1; Mon, 24 Jun 2024 13:05:36 -0400 X-MC-Unique: j72fES3LPGiQGvOqEetYdg-1 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9C5C61955EF2; Mon, 24 Jun 2024 17:05:32 +0000 (UTC) Received: from [10.22.17.135] (unknown [10.22.17.135]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id F193B1956048; Mon, 24 Jun 2024 17:05:29 +0000 (UTC) Message-ID: Date: Mon, 24 Jun 2024 13:05:29 -0400 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] memcg: Add a new sysctl parameter for automatically setting memory.high To: Michal Hocko Cc: Roman Gushchin , Johannes Weiner , Muchun Song , Andrew Morton , Jonathan Corbet , Shakeel Butt , linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, Alex Kalenyuk , Peter Hunt , linux-doc@vger.kernel.org References: <20240623204514.1032662-1-longman@redhat.com> <77d4299e-e1ee-4471-9b53-90957daa984d@redhat.com> Content-Language: en-US From: Waiman Long In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 X-Rspamd-Queue-Id: 5C303C0013 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 7jta7r1if39itycqpe3p4iyqx6tnpbga X-HE-Tag: 1719248741-447505 X-HE-Meta: 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 lrHDP80s OiS6S3vIog3fYYHUgF4k+A8uXM8+TzKunSSoFL4uThHzoD24nY3n3FYpL0Ax3ptaXA5gDFm/t/onRUjZly7EyQzeJ6ZKf+oFHJ2KPht54ehfZVInbS65wuORe3GeYpDWd5ul5/fdm100dZJ89z4kUN3Dyj58O4v4yl7P1XJ/PlLVHMsOzD7zja6rvMtdocJLSZQJXvERe1JjWsFzQ3L/cRqFHoK90OoMMouy0SJp+v88gB8xbxVSMgZS/eGnA4xbokVO2gDtx9UTH93nNs7fsw6oTC/puoJ8KItH3bVwXipon7TzjCqTG9XxtTy0qDj52y2Ow 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 6/24/24 12:46, Michal Hocko wrote: > On Mon 24-06-24 12:33:27, Waiman Long wrote: >> I also trace back the OOM problem to commit 14aa8b2d5c2e ("mm/mglru: don't >> sync disk for each aging cycle") in the MGLRU code. So setting memory.high >> automatically is one way to avoid premature OOM. That is the motivation >> behind this patch. > Please report this. OK, will do. Cheers, Longman