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 0AFB5C433EF for ; Wed, 2 Mar 2022 17:28:31 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 8DCB18D0005; Wed, 2 Mar 2022 12:28:30 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 88B2D8D0001; Wed, 2 Mar 2022 12:28:30 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 753768D0005; Wed, 2 Mar 2022 12:28:30 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0169.hostedemail.com [216.40.44.169]) by kanga.kvack.org (Postfix) with ESMTP id 677958D0001 for ; Wed, 2 Mar 2022 12:28:30 -0500 (EST) Received: from smtpin17.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 27AAA181DA0A2 for ; Wed, 2 Mar 2022 17:28:30 +0000 (UTC) X-FDA: 79200130380.17.8439884 Received: from mail-yw1-f174.google.com (mail-yw1-f174.google.com [209.85.128.174]) by imf19.hostedemail.com (Postfix) with ESMTP id 9AABA1A0013 for ; Wed, 2 Mar 2022 17:28:29 +0000 (UTC) Received: by mail-yw1-f174.google.com with SMTP id 00721157ae682-2dc28791ecbso12712847b3.4 for ; Wed, 02 Mar 2022 09:28:29 -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:content-transfer-encoding; bh=QorgPOrctu7jDZGfmU5niTx5scqueaYLz/D6OKVfMk8=; b=QHPNn5z3QDfKsDjgyKSV9e60IHoOZtkV4j6xrxpeTpkchhsmY2fE/H9w1qDvWzk2bM 5nBEba4pLn0cphULfx+b4zwNSJqJSl9TvPCH60KG4fWUzQAxvfn/a8s2zR7wJznswB/j W3NgHH3N/P7PxNZ74//iNcdahVGmu9bpR4okw= 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:content-transfer-encoding; bh=QorgPOrctu7jDZGfmU5niTx5scqueaYLz/D6OKVfMk8=; b=FHBC9LiWxmSSAF4gThNY02hGaEu1Ifw+T8MM/oPzUYt1l1nvUqb0RkA7/wdNDK6AqN RxWnlhUZ13MmDpcLWyZniOGi2rNrTNMJKREDuyTVKrZy/chL1ujpxqOS2dTHQDW3zjl7 uRq0ovlRMLJgsnIz7sVQP0pNkuiO8p6HL+2yvMMvdzvUs1W+UnSIPCIPMSyQ0lRSOOAq GMk9X4lWf28n/nyOvgeV6KP0u5QVJOQtXCaTwDi+J+4N3QFDRD4K3NDNmb2PafRUvkla pv0sQgoRVOqLM5kOELjRf1SKUrg2ecr2aCzXaDry5DAbMefJY291ovR5MIutVDYVDyMZ ijnQ== X-Gm-Message-State: AOAM532a5M5ObYvFjabVhpcJpJgoMpKD/YruSxclf1LPIxU0h4uvJOQA 426C0acgtZxReH3r7xQjTfF7kOhuAkTQmlXqEXjzsg== X-Google-Smtp-Source: ABdhPJwmoBsOph94e9vZQaGRcZtYpzuj299+NdJKawqUkT/fUB3TpM5QiCUSywBlyeZutv/jbSNR6PCJRuWY7ZKN8CU= X-Received: by 2002:a81:642:0:b0:2d6:baf8:ee52 with SMTP id 63-20020a810642000000b002d6baf8ee52mr30799294ywg.36.1646242108862; Wed, 02 Mar 2022 09:28:28 -0800 (PST) MIME-Version: 1.0 References: <20220224185236.qgzm3jpoz2orjfcw@google.com> <20220225180345.GD12037@blackbody.suse.cz> <20220228230949.xrmy6j2glxsoffko@google.com> <20220302100821.GB10867@blackbody.suse.cz> In-Reply-To: From: Ivan Babrou Date: Wed, 2 Mar 2022 09:28:18 -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" Content-Transfer-Encoding: quoted-printable X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 9AABA1A0013 X-Stat-Signature: qjwm6sjoxcxqitcisdofxdheobuewkrm Authentication-Results: imf19.hostedemail.com; dkim=pass header.d=cloudflare.com header.s=google header.b=QHPNn5z3; dmarc=pass (policy=reject) header.from=cloudflare.com; spf=none (imf19.hostedemail.com: domain of ivan@cloudflare.com has no SPF policy when checking 209.85.128.174) smtp.mailfrom=ivan@cloudflare.com X-HE-Tag: 1646242109-585570 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 Wed, Mar 2, 2022 at 7:53 AM Shakeel Butt wrote: > > On Wed, Mar 2, 2022 at 2:08 AM Michal Koutn=C3=BD wrot= e: > > > [...] > > > > BTW what was the "last good" kernel that you use as baseline for > > comparisons? (I can't find it in the thread and I only assume we're > > comparing against pre-rstat switch, i.e. last good < v5.13?) > > > > I think 5.10 is the last good kernel for them (and yes pre-rstat switch). Correct, we stick to LTS kernels.