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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37CE8C433EF for ; Fri, 11 Feb 2022 06:49:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346239AbiBKGt1 (ORCPT ); Fri, 11 Feb 2022 01:49:27 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:41886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237729AbiBKGt0 (ORCPT ); Fri, 11 Feb 2022 01:49:26 -0500 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 36AB2115A for ; Thu, 10 Feb 2022 22:49:26 -0800 (PST) Received: by mail-yb1-xb49.google.com with SMTP id s73-20020a25aa4f000000b0061d764d3c13so17165785ybi.1 for ; Thu, 10 Feb 2022 22:49:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:message-id:mime-version:subject:from:to:cc; bh=7cEUUMm8No+47SEC0UonhOqIuTdbXjwICtqwH1vHhoQ=; b=fb3bmiUsrp8W4YmAG3agpua6xnfwRewOZ8YA8GXSqnYAPC8zDIVx6AoedzrfSysYph zzvjaiNO751h5z4oCLk4zWH107SG09igxaI4HWBb1br4poFMySSL6hi1EE3b+DYhoSkr E8isZ/nwurJsTuixeh5zQ22wHMxuwcRqJYWTA+SlpVkjSTo1VKwRMe+ZUHsup7SwY5XP j0dXPMF/835VLYM3EhP1F/flECnKhOMqisNWuPeE9/Uo+X/0hqoGEnt+lp+mcMd8/d04 p1R9iZ10rYSwdyqK3vsqBTfPZ8kYkC+5e/3cs9ufj47kI+7yPQufY7yIHZMwKB5NfcpC ioxA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=7cEUUMm8No+47SEC0UonhOqIuTdbXjwICtqwH1vHhoQ=; b=vh1W1ZYLgcpA8emjl6tHMpcfQi1xh0cJMfBB0HKhonWv1N4hw1ZXb4IGl6YDMPqNo6 rDHYh5uzXSlQj1VlAyUuTZQefYyM2m9klv0Q36MH3nRwbQDwuPYxGQoRWMjvH3W6ykWK izTo6jtsEUHNK9yzYRISLR7Fm7MTCjovNra/vcnITbnsb9/5rBszf8P1uw8x59zC/bXl mTbjvJurODuBxqBIp/92PoCUIoqVi2LL/MayVwr6fE685dLfXyibB9R3Tvee/8owfNxI JXWWE/6v6xC82CK5piBL88wHrPqDMNs7fvo3DNEhXY1xkqIQspsbq445Lv0AQUvs4ykD QU8Q== X-Gm-Message-State: AOAM533UuwrhMCSxM/a3/Dzwu55pCmGRUzko3o4fi3zN3QQ1bjS3dkKz vZmbGtHJmm59a9ww9sM/8PJD1GYAVjgGpQ== X-Google-Smtp-Source: ABdhPJwjcJt1qNgxSN9vWV7QgR7LvR6l6f8Pvejc675UNvm/3bhAMhZsP+fwGZb5+wH9V5YwUfVByIzNtijgDg== X-Received: from shakeelb.svl.corp.google.com ([2620:15c:2cd:202:9a07:ef1a:2fee:57f1]) (user=shakeelb job=sendgmr) by 2002:a81:1ec2:: with SMTP id e185mr336741ywe.324.1644562165435; Thu, 10 Feb 2022 22:49:25 -0800 (PST) Date: Thu, 10 Feb 2022 22:49:13 -0800 Message-Id: <20220211064917.2028469-1-shakeelb@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.35.1.265.g69c8d7142f-goog Subject: [PATCH v2 0/4] memcg: robust enforcement of memory.high From: Shakeel Butt To: Johannes Weiner , Michal Hocko , Roman Gushchin Cc: Chris Down , Andrew Morton , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Shakeel Butt Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Due to the semantics of memory.high enforcement i.e. throttle the workload without oom-kill, we are trying to use it for right sizing the workloads in our production environment. However we observed the mechanism fails for some specific applications which does big chunck of allocations in a single syscall. The reason behind this failure is due to the limitation of the memory.high enforcement's current implementation. This patch series solves this issue by enforcing the memory.high synchronously if the current process has accumulated a large amount of high overcharge. Changes since v1: - Based on Roman's comment simply the sync enforcement and only target the extreme cases. Shakeel Butt (4): memcg: refactor mem_cgroup_oom memcg: unify force charging conditions selftests: memcg: test high limit for single entry allocation memcg: synchronously enforce memory.high for large overcharges mm/memcontrol.c | 66 +++++++--------- tools/testing/selftests/cgroup/cgroup_util.c | 15 +++- tools/testing/selftests/cgroup/cgroup_util.h | 1 + .../selftests/cgroup/test_memcontrol.c | 78 +++++++++++++++++++ 4 files changed, 120 insertions(+), 40 deletions(-) -- 2.35.1.265.g69c8d7142f-goog