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 E5EFFC433EF for ; Mon, 28 Feb 2022 23:34:38 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 545DA8D0003; Mon, 28 Feb 2022 18:34:38 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 4CB3E8D0001; Mon, 28 Feb 2022 18:34:38 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3277E8D0003; Mon, 28 Feb 2022 18:34:38 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.27]) by kanga.kvack.org (Postfix) with ESMTP id 22B448D0001 for ; Mon, 28 Feb 2022 18:34:38 -0500 (EST) Received: from smtpin02.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id EF0F76133B for ; Mon, 28 Feb 2022 23:34:37 +0000 (UTC) X-FDA: 79193795394.02.9629DA0 Received: from mail-yw1-f182.google.com (mail-yw1-f182.google.com [209.85.128.182]) by imf10.hostedemail.com (Postfix) with ESMTP id 72662C000A for ; Mon, 28 Feb 2022 23:34:37 +0000 (UTC) Received: by mail-yw1-f182.google.com with SMTP id 00721157ae682-2d07ae0b1bfso126581897b3.6 for ; Mon, 28 Feb 2022 15:34:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloudflare.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=CMLjWyCrxsWaCBD9Mj3qAB0h71boH31TUVdR21f6REM=; b=qnEt5GA6DbTzdKo3w6sOx5P0OddYbsOlH+NPAOdyphu4aLMnkSQ9y43MYnY8Y6YD5f /e+PdfUSVgbVelqKiDzvjXeEoQ+Acw++p9UVA4JhY+J6w4B4m4UUYCN34oMQAIN/VMZ2 xEVpbHvdDHThwu66Zezzg+awSj+w+BLfAC0wo= 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=CMLjWyCrxsWaCBD9Mj3qAB0h71boH31TUVdR21f6REM=; b=zo3SMsaZMutjHJXvwJdhsdl9g7YV2Sb47h5dIXVpHy2JRpW7yyN9wBRp7xg2VdI+tL PL7deVjoOD21gmHmPsXlFml15ApJKwCSrXoJVU37R6vsQmUiNczhrFNMd5waJ61EneLI gI2GgI8pBPy1ECnlpXdGussJucW/Gleic7pb8wnhOb5WVHWwiIYzKU/jO6P7dgL0oAve KkIzz8RzQb8gqOaDrPjyxZgJNx0cI9K7v7kcdTukKOhsIMyNAl8xOp71DW506thMuNlO OIk/jZ5BWaF7mJqqziUzfYdxgsOC+EUJbizUfwUKdmLaZUC5DFFD5Z9uXP//U4VN0eos 4Y6A== X-Gm-Message-State: AOAM530AJYEMgzstUNzgSkapw8gVr8HRpwnIpTfJ3+YIG87M5DCadNAX QKiHNNmy75i2Gu1uysR3lzZ0xOV/GpV3BjjLUQruVw== X-Google-Smtp-Source: ABdhPJzsJL07RLa7melbCwf+D/sdkqg3vK4ZrikJVNfD5H2l6m825hlr6GdZh55eE9MpSWLI1OVisxOLRc6XXc0dZHg= X-Received: by 2002:a81:3dc9:0:b0:2db:9b1f:96fa with SMTP id k192-20020a813dc9000000b002db9b1f96famr6046205ywa.300.1646091276496; Mon, 28 Feb 2022 15:34:36 -0800 (PST) MIME-Version: 1.0 References: <20220224165838.oir5clpkkqpstpx3@google.com> <20220224185236.qgzm3jpoz2orjfcw@google.com> <20220225180345.GD12037@blackbody.suse.cz> <20220228230949.xrmy6j2glxsoffko@google.com> In-Reply-To: <20220228230949.xrmy6j2glxsoffko@google.com> From: Ivan Babrou Date: Mon, 28 Feb 2022 15:34:25 -0800 Message-ID: Subject: Re: Regression in workingset_refault latency on 5.15 To: Shakeel Butt Cc: =?UTF-8?Q?Michal_Koutn=C3=BD?= , Daniel Dao , kernel-team , Linux MM , Johannes Weiner , Roman Gushchin , Feng Tang , Michal Hocko , Hillf Danton , Andrew Morton , Linus Torvalds Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 72662C000A X-Rspam-User: Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=cloudflare.com header.s=google header.b=qnEt5GA6; spf=none (imf10.hostedemail.com: domain of ivan@cloudflare.com has no SPF policy when checking 209.85.128.182) smtp.mailfrom=ivan@cloudflare.com; dmarc=pass (policy=reject) header.from=cloudflare.com X-Stat-Signature: srie8qs7a5jmb3anj13zs583j7jztrcp X-HE-Tag: 1646091277-775643 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 Mon, Feb 28, 2022 at 3:09 PM Shakeel Butt wrote: > Hi Ivan & Daniel, > > Can you please try the following patch but without the async patch and > let us know if there is any difference in regression you are observing? Hey Shakeel, I scheduled some reboots for overnight, one machine in each group: 1. Control on 5.15.25 2. Your previous patch with delayed flush on top of 5.15.25 3. You current patch with targeted flush on top of 5.15.25 Either Daniel or I should have some numbers tomorrow.