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 6F576C433F5 for ; Sun, 22 May 2022 22:09:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0476F8D0002; Sun, 22 May 2022 18:09:44 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id F395B8D0001; Sun, 22 May 2022 18:09:43 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id E507B8D0002; Sun, 22 May 2022 18:09:43 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id D88398D0001 for ; Sun, 22 May 2022 18:09:43 -0400 (EDT) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay11.hostedemail.com (Postfix) with ESMTP id 81248807F8 for ; Sun, 22 May 2022 06:50:13 +0000 (UTC) X-FDA: 79492454706.01.73AC440 Received: from mail-yb1-f173.google.com (mail-yb1-f173.google.com [209.85.219.173]) by imf27.hostedemail.com (Postfix) with ESMTP id CF94A40012 for ; Sun, 22 May 2022 06:50:09 +0000 (UTC) Received: by mail-yb1-f173.google.com with SMTP id t26so20400137ybt.3 for ; Sat, 21 May 2022 23:50:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20210112.gappssmtp.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=xBwtB9T65QzhNPtQZ0QXYA7XAPyjsJvSWqKsiu1+O3c=; b=1tl+DtjUID/Yit6XMR1sy4CgTCo7HJWlhuAjY9JG40KKnRyzU6DDTBO7B8l8eQHvs5 HCM1hEkHgCiX8lbuD66I4Wg6aom5XMll2U7YYcjZ8YFM9a1TDI+HJflEKyxUunm8Lx5t 2DN0t8GjjEE5K2TKo4NqLvLu6Dqrx8grDcdVi34AwfAju6scjTPeKVdb0NuAEAZ9oDAh CqTsDqWcF3ZoMr7K1uQmsMtv5yVqDCA+QZsfWMEPE9pcfKpzks4o+OoxvCn8OjO9fHY+ u+6D2zwnTQKV7bZYNGgg6da2F230kRqfS2eXe9sPxUX9yJLUnrjbvXDNsYzkpHqJeN0V kKnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=xBwtB9T65QzhNPtQZ0QXYA7XAPyjsJvSWqKsiu1+O3c=; b=THDBTBv1v9zfhptqZsQhJaUu0xq0jVeO14YhxEumW+gOTZ5SxChPslfOaa+S45pZ9L hec0757kAWMuTn54hrjJ+2dLMwf3cNP3E6r2exdPaLBAt4zRHR9HzkyswFRBHVpSE/Es SEfYX3OhA28i4Fgohdfx3gu7ggdBcGaeuLWeJfVnzvXKKC9jln1sTzCIERg7LK9oMjU+ XyEomEM/+jmEMK0iOqly/PodEDvB0H63yOosMmzHCwt3wvXrcqqWXnjqIir3QQfK7y4W dOFJw/sdICfKNy0bO97uJHbJeiXqqx3qDmgV8fHYxayA1PMPQRsjO/9YjRrc2MDQfK4v cjRQ== X-Gm-Message-State: AOAM531ZgcHkN8C0Td6laajNogLvv5e/DALU8f+6mhXE+fqaCzdxg4jy OQkP7hnbmhGytMz3dcQ3OI8uehOvnYrMwsyPsnfHtg== X-Google-Smtp-Source: ABdhPJxG7bFPCW5S+Nizupv0nufUjwDo2jXDHFEk/7XVc3m5J4NbnaL1ymOAP0Uw17amoGe2vIpChAn7wQbK1KbLxrY= X-Received: by 2002:a25:3452:0:b0:64e:1776:ce90 with SMTP id b79-20020a253452000000b0064e1776ce90mr16686330yba.261.1653202212242; Sat, 21 May 2022 23:50:12 -0700 (PDT) MIME-Version: 1.0 References: <46bbde64-7290-cabb-8fef-6f4a30263d8c@openvz.org> In-Reply-To: <46bbde64-7290-cabb-8fef-6f4a30263d8c@openvz.org> From: Muchun Song Date: Sun, 22 May 2022 14:49:36 +0800 Message-ID: Subject: Re: [PATCH mm v2 8/9] memcg: enable accounting for allocations in alloc_fair_sched_group To: Vasily Averin Cc: Andrew Morton , kernel@openvz.org, LKML , Linux Memory Management List , Shakeel Butt , Roman Gushchin , =?UTF-8?Q?Michal_Koutn=C3=BD?= , Vlastimil Babka , Michal Hocko , Cgroups Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: CF94A40012 X-Stat-Signature: bbn1xo3k7g1kuzjp31wcczj1rq47d4nt Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=bytedance-com.20210112.gappssmtp.com header.s=20210112 header.b=1tl+DtjU; spf=pass (imf27.hostedemail.com: domain of songmuchun@bytedance.com designates 209.85.219.173 as permitted sender) smtp.mailfrom=songmuchun@bytedance.com; dmarc=pass (policy=none) header.from=bytedance.com X-Rspam-User: X-HE-Tag: 1653202209-780814 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: On Sun, May 22, 2022 at 12:39 AM Vasily Averin wrote: > > Creating of each new cpu cgroup allocates two 512-bytes kernel objects > per CPU. This is especially important for cgroups shared parent memory > cgroup. In this scenario, on nodes with multiple processors, these > allocations become one of the main memory consumers. > > Memory allocated during new cpu cgroup creation: > common part: ~11Kb + 318 bytes percpu > cpu cgroup: ~2.5Kb + 1036 bytes percpu > > Accounting for this memory helps to avoid misuse inside memcg-limited > contianers. > > Signed-off-by: Vasily Averin Reviewed-by: Muchun Song