Received: by 2002:a25:1506:0:0:0:0:0 with SMTP id 6csp4951648ybv; Tue, 11 Feb 2020 06:27:10 -0800 (PST) X-Google-Smtp-Source: APXvYqxwpv2D5PvomtsresQFoonVB/gA5FJ8SyPNZ3RGZlcrwM9pOYYHdxhP+J644FFrO26M1QDF X-Received: by 2002:aca:5a04:: with SMTP id o4mr3019402oib.71.1581431230743; Tue, 11 Feb 2020 06:27:10 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1581431230; cv=none; d=google.com; s=arc-20160816; b=soJcmz0mimme4v5sHfiNdjcMZSDmfNRkxM0lwZgeJAlwMuQcTeelzQstsRD2w/L8NR QNdDVO0oLuSvFHwMqzHqKXW4P6eXjTf9JCvZIRJSfthrFY5mRZ2mskmGGPtdsc/gjeI9 2kRXfXJ/OJ/q/A/CxMGDhcMFhL1Me2s5zEFX6LPA+m4iZK2ukvnZvgiDn3zZHgCW9j4X 0xGkaa32HWWdPS8IuoZ/EoOcZbqRBSGoWjSfYfUCaVst4Urly9mlhwNTWX7u7SHDAcdV U1zvswanzPm9JzibLSTqR9yPTcO2wH98sdI4AYLH5wbXZE497LUpftF+PA5q3OtbZ+zt HS8A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:subject:cc:to:from:date; bh=fDJXs1oFVL3x5sQPVDHSRldWpcrmrgB3+831YjWpj2s=; b=J4JkGFHyasu+wlckU2Ek8c1HhBDwH1qUdZCk1i0/rO5TaVh1arCKuyQdB12wqBzn6q u4vWxeTrPv7swX1rPFwBpyGShs9C9iI1P5UruJuALJ5Qmj+ngak3EBnimrM7N8/leXW2 zJNHMSsR27JKXeYF9HLpme5rv+ELlC8yvblMdQVLsUIsuDYBWhpovIcffF6WJaZGRtIX ULBLtnLjwQ0sR0Z+Ym3nohzblU0ADTztVdhso5gmvazwVNlsAK1UFkfcaxgqMgVRXrVG SSejiMw9xeF2SwdcZubdTCiSRNJtHXMAeM1AICy5QZh2hY3jjp6+bJXa18IOM3zorrEY nzlA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id e77si2072213ote.153.2020.02.11.06.26.58; Tue, 11 Feb 2020 06:27:10 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729457AbgBKOAc convert rfc822-to-8bit (ORCPT + 99 others); Tue, 11 Feb 2020 09:00:32 -0500 Received: from mail.kernel.org ([198.145.29.99]:54020 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729437AbgBKOAb (ORCPT ); Tue, 11 Feb 2020 09:00:31 -0500 Received: from gandalf.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8ED9B2086A; Tue, 11 Feb 2020 14:00:30 +0000 (UTC) Date: Tue, 11 Feb 2020 09:00:28 -0500 From: Steven Rostedt To: Peter Zijlstra Cc: =?UTF-8?B?546L6LSH?= , Ingo Molnar , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Ben Segall , Mel Gorman , "open list:SCHEDULER" Subject: Re: [RFC] why can't dynamic isolation just like the static way Message-ID: <20200211090028.4e12d02e@gandalf.local.home> In-Reply-To: <20200211114350.GJ14914@hirez.programming.kicks-ass.net> References: <20200211114350.GJ14914@hirez.programming.kicks-ass.net> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 11 Feb 2020 12:43:50 +0100 Peter Zijlstra wrote: > On Tue, Feb 11, 2020 at 04:17:34PM +0800, 王贇 wrote: > > Hi, folks > > > > We are dealing with isolcpus these days and try to do the isolation > > dynamically. > > > > The kernel doc lead us into the cpuset.sched_load_balance, it's fine > > to achieve the dynamic isolation with it, however we got problem with > > the systemd stuff. > > Then don't use systemd :-) Also, if systemd is the problem, why are you > bugging us? [ Background. Peter is someone that doesn't even use systemd. ;-) ] -- Steve