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 X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D51C8C433F5 for ; Tue, 21 Sep 2021 07:04:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AE2D061184 for ; Tue, 21 Sep 2021 07:04:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230039AbhIUHGP (ORCPT ); Tue, 21 Sep 2021 03:06:15 -0400 Received: from mout.gmx.net ([212.227.15.18]:45861 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229917AbhIUHGN (ORCPT ); Tue, 21 Sep 2021 03:06:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1632207853; bh=NhQ2FRb1gtO8O11CiH8UE4rdyQC20tTnlz7v+x9CsKo=; h=X-UI-Sender-Class:Subject:From:To:Cc:Date:In-Reply-To:References; b=N9503PsR8PfqDVcQc4/svBwiNarBw63gs7ZU9BIomO9/KdHAmpotDhNA4bAtAoVll h0ieghf8cJ0VYe1X8uaIGwaUMN0eMGv22gdPZLWfda/TnI92Rg8PtcReMJhJuU6lK2 eKhvPUeiiMHCaG2M0oKSyj+Nyz1YgAg2K0bk+Sw4= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from homer.fritz.box ([185.191.219.33]) by mail.gmx.net (mrgmx004 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MyKDe-1mnR5t0j0e-00yiKt; Tue, 21 Sep 2021 09:04:13 +0200 Message-ID: Subject: Re: [PATCH 2/2] sched/fair: Scale wakeup granularity relative to nr_running From: Mike Galbraith To: Mel Gorman , Peter Zijlstra Cc: Ingo Molnar , Vincent Guittot , Valentin Schneider , Aubrey Li , Barry Song , Srikar Dronamraju , LKML Date: Tue, 21 Sep 2021 09:04:10 +0200 In-Reply-To: <22e7133d674b82853a5ee64d3f5fc6b35a8e18d6.camel@gmx.de> References: <20210920142614.4891-1-mgorman@techsingularity.net> <20210920142614.4891-3-mgorman@techsingularity.net> <22e7133d674b82853a5ee64d3f5fc6b35a8e18d6.camel@gmx.de> Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.42.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:wG/137JuIdqZCQulk5+HaNOvmugIXfeSyfNh6+a9/AHzRrFd1Sq h8jencsEpQr+oXellG1Vm5XJqgUyUTltvUcRJcgLZAxfzgQ3vUluCTRPUseInqh5dPkJ/f0 3Qv1aVnxfGJty3gZ3xHtbcJcd8Yk9rZWmL/wwz5kaRHBi5eq9iEsuKvoiWAEaxmN5izcjzi PX3tgFCPpO5D4jxuABHQw== X-UI-Out-Filterresults: notjunk:1;V03:K0:ArE1V0qbY20=:oyFI8cGkV20IzRpvzcTcPo PEiCyl6KfWS6uT4LWFnuAxazVArPlcZhuxZz5BUvhtMuC+GHFDWrAG5TWmPl2HdIjyTLdWx6n XuHvyYdL/rKU1lKsfMtM2xQ8iHkrRdhgMuY1XwT9QINc3CKQo9hxdRg69gFfq6u9wiGvyOEMh yPW/jaLF+nrENlqNIyZKjpe4AV372ievjbU5CAwVEcPaY+iktlAm7W49fBgt1K2vC2D0t3WXy B+tO7GMVGdwfhYZbeWCKJVtDx5TRKdFAzfC1wYEFSzYwnU8pC21rZUzpknf50IaiMstNJmlLh GgNyscRX9UyVtr9DP3yQkdTBMAmp8aTqPL1HAwXXqqpluq7bdyXHAclQKBYcafRhTk55BU3ts 4ppwH0nZeQHHfKySrVIQsNPDjncC/rOQDTknh2GO1DI+44d4cin/qBc5Kd1ZdFUXwZqa6L5H3 fyEoIXTB5+HsDMtqw1UT+yPFBpRudesMmOGxaiSVxgc+uiCor76MWcE2RVn0Y354MTeDfvpTJ reqhznFp5dZUBEjD5QQwCF2woyRXUe2vrDApA2B3YiysVXaY05hK0foIJ8WTFk8cEPY1qbkyv Wo4B0PtKy3nJzbes6rP2oZSL6QS6+1cUx/N1YC9nzRJyMuQII00PCLgWYM9kwepc5wyKBVMkS lsbtzPLFQKaDSACZNgtwcml847IhvE+C4PZaEovMiPfAK6KBAI+6WqfX5vHStuARwdBaBtCs/ WuwEvmtOJoJN46vxfqXc0twxlTm0bIqqUWhso7jHZxQE/fOzrBxwEkCJyqMa+oOtox30DPtAS 8fXl7nQswxsWJPMi/yLcC+HERW5tHkWxx7njZwP+Hgrdl6Yhn9SF4WXBW9+/Bf4kMeq+rQah+ axz86uqG6xfh/Qr6In8y9WNrmn5ftVL+RMgONx3+76/aY1fodOhz8HvrQhy2yhg+4GUx3jMe2 PmbrGzL4S0cVMwVT0V5F/5yHFjE+e/EzI+xa/WzhkP5z9SWKk1gTAyByYgGmaIW8VWImPhZXp bDkYTOuYn4KJ+IhvLr0SGANIssixzFOTsheOZKGWgnIpbsMb3LmM3GkxQDvNeHqqCpMZ6hUHA 3yMr2OEhMx7Khs= Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2021-09-21 at 05:52 +0200, Mike Galbraith wrote: > > ...preempt threshold reaches 12.000ms, by human booboo or now 3 > runnable tasks Bah, 6 so not so close to hohum burst level, but still something that maybe warrants a feature. -Mike