Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756682AbdLVUmy (ORCPT ); Fri, 22 Dec 2017 15:42:54 -0500 Received: from merlin.infradead.org ([205.233.59.134]:51200 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755941AbdLVUmw (ORCPT ); Fri, 22 Dec 2017 15:42:52 -0500 Date: Fri, 22 Dec 2017 21:42:47 +0100 From: Peter Zijlstra To: Vincent Guittot Cc: Ingo Molnar , linux-kernel , Brendan Jackman , Dietmar Eggemann , Morten Rasmussen Subject: Re: [RFC PATCH 2/5] sched: Add NOHZ_STATS_KICK Message-ID: <20171222204247.kyc6ugyyu3ei7zhs@hirez.programming.kicks-ass.net> References: <20171221102139.177253391@infradead.org> <20171221102235.088181011@infradead.org> <20171222075934.f6yenvcb2zkf2ysd@hirez.programming.kicks-ass.net> <20171222082915.4lcb7xyyooqyjpia@hirez.programming.kicks-ass.net> <20171222091221.ow5vn3ydx3hj4nht@hirez.programming.kicks-ass.net> <20171222185629.lysjebfifgdwvvhu@hirez.programming.kicks-ass.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171222185629.lysjebfifgdwvvhu@hirez.programming.kicks-ass.net> User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 292 Lines: 8 On Fri, Dec 22, 2017 at 07:56:29PM +0100, Peter Zijlstra wrote: > Right; but I figured we'd try and do it 'right' and see how horrible it > is before we try and do funny things. So now it should have a 32ms tick for up to .5s when the system goes completely idle. No idea how bad that is..