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 1BFFCC433EF for ; Wed, 2 Mar 2022 03:40:25 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 91F3B8D0002; Tue, 1 Mar 2022 22:40:25 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 8CE1C8D0001; Tue, 1 Mar 2022 22:40:25 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 796C48D0002; Tue, 1 Mar 2022 22:40:25 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.a.hostedemail.com [64.99.140.24]) by kanga.kvack.org (Postfix) with ESMTP id 69CA08D0001 for ; Tue, 1 Mar 2022 22:40:25 -0500 (EST) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 36E7F20456 for ; Wed, 2 Mar 2022 03:40:25 +0000 (UTC) X-FDA: 79198043610.04.398E807 Received: from mail-yw1-f180.google.com (mail-yw1-f180.google.com [209.85.128.180]) by imf23.hostedemail.com (Postfix) with ESMTP id B8841140005 for ; Wed, 2 Mar 2022 03:40:24 +0000 (UTC) Received: by mail-yw1-f180.google.com with SMTP id 00721157ae682-2d6d0cb5da4so3190227b3.10 for ; Tue, 01 Mar 2022 19:40:24 -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=5JUeJnx80F6tteKOkxbvB9IhCOdmjPCDtNUEMxnXGDI=; b=q1fIddaL8n0P6hvk8efS8Qo6ku3C0EFRWSLi7ms82lz8RnCbiQQkPRJ1WHwvBlcxBa MihhsHzJDHDFQEiw6BBe1MCgH8ufATS9wTVs62eB60bSdB8GZCrsXVAZBeneLfpqV0Cb q2V8jnYW+/wdEbQpT5qB7wLJ37QZJGvQ/6MrY= 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=5JUeJnx80F6tteKOkxbvB9IhCOdmjPCDtNUEMxnXGDI=; b=jbGdV3j1crOT8tJkwTnLtbKNwqUc32OQ/TVIfS+GQDpRhJSn6c3TFi67ALNvJ7Rg7N QhcyQ/3pt+4PvvItFTvPeHbbwSuuklSzG1LjtHqck44ZJc0YB3++dlJdr2vhvRv6V5sK u8Ig9zL8n4Oec5RUZt8GvXVwEpU4gESVjBD02KoZftamcKUEW2Q51jisECQxoJz4hC7X Sw0eRH8PkuthhAGKetZqdbU4IrKzxqgAUTMedRru6cn5ak7TKqQI8jQCDHT8F5cSymU6 stcdocFZKqK9cr+o/ZZvGJUCjzAxh1bXQrMpOebuyky57z1ijYVzGEEByJfZFvwEp9rM SLvQ== X-Gm-Message-State: AOAM532Mf4m4bVPnrNQCPvrBnq8Mg5WdKpm1TyzDWcksaL9KkXjtXyql Mbiwfa07ZmJp+8B2SM8eZb1XvYQjNY0AwOPxys2fzg== X-Google-Smtp-Source: ABdhPJyt4L0TbuU5ndULlqfSGOd2rY3wgik6OWWz9/DASGsm8Xm4ARgSHoNhOgVbmK2C3tznG8tp/tZvpVAluiWFbbI= X-Received: by 2002:a81:a842:0:b0:2db:562a:3f13 with SMTP id f63-20020a81a842000000b002db562a3f13mr16436776ywh.322.1646192423910; Tue, 01 Mar 2022 19:40:23 -0800 (PST) MIME-Version: 1.0 References: <20220224185236.qgzm3jpoz2orjfcw@google.com> <20220225180345.GD12037@blackbody.suse.cz> <20220228230949.xrmy6j2glxsoffko@google.com> <20220302025022.nnmpwxmkqed2icck@google.com> In-Reply-To: <20220302025022.nnmpwxmkqed2icck@google.com> From: Ivan Babrou Date: Tue, 1 Mar 2022 19:40:13 -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-Queue-Id: B8841140005 X-Stat-Signature: 8kbeirfaskmg3ezqzwqkgmzentgfqaeq Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=cloudflare.com header.s=google header.b=q1fIddaL; spf=none (imf23.hostedemail.com: domain of ivan@cloudflare.com has no SPF policy when checking 209.85.128.180) smtp.mailfrom=ivan@cloudflare.com; dmarc=pass (policy=reject) header.from=cloudflare.com X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1646192424-216894 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 Tue, Mar 1, 2022 at 6:50 PM Shakeel Butt wrote: > > On Tue, Mar 01, 2022 at 04:48:00PM -0800, Ivan Babrou wrote: > > [...] > > > Looks like you were right that targeted flush is not going to be as good. > > > Thanks a lot. Can you please try the following patch (independent of other > patches) as well? Sure thing, I'll come back with the numbers tomorrow.