Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753185Ab0KYNkI (ORCPT ); Thu, 25 Nov 2010 08:40:08 -0500 Received: from mailhost-y4-m4.nerim.net ([78.40.49.241]:24196 "EHLO smtp-delay2.nerim.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752824Ab0KYNkG (ORCPT ); Thu, 25 Nov 2010 08:40:06 -0500 X-Greylist: delayed 516 seconds by postgrey-1.27 at vger.kernel.org; Thu, 25 Nov 2010 08:40:06 EST Date: Thu, 25 Nov 2010 14:31:06 +0100 From: Damien Wyart To: Peter Zijlstra Cc: tmhikaru@gmail.com, Venkatesh Pallipadi , Chase Douglas , Ingo Molnar , Thomas Gleixner , linux-kernel@vger.kernel.org Subject: Re: High CPU load when machine is idle (related to PROBLEM: Unusually high load average when idle in 2.6.35, 2.6.35.1 and later) Message-ID: <20101125133106.GA12914@brouette> References: <1287788622-25860-1-git-send-email-venki@google.com> <1288001573.15336.52.camel@twins> <1288097074.15336.211.camel@twins> <1288101958.15336.284.camel@twins> <1288381343.1988.12.camel@laptop> <20101109185516.GQ8332@bombadil.infradead.org> <1289329348.2191.69.camel@laptop> <20101110034507.GV8332@bombadil.infradead.org> <1289390424.2191.98.camel@laptop> <20101114051406.GA2050@roll> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101114051406.GA2050@roll> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1215 Lines: 28 Hi Peter, Do you have a plan about solving this problem in the coming weeks or will it still be present in 2.6.37 final? I am not implying any critic in any way, just want to know a status because compared to other bugs discussed in lkml, this one has seen very little technical proposals towards a resolution (except your attempts). People who signed off the discussed commit did not make any technical analysis about the bug reported and this gives a strange feeling. Earth will not stop rotating if it is not solved, but I still this it is quite important and affects many users. > [74f5187ac873042f502227701ed1727e7c5fbfa9] sched: Cure load average vs> NO_HZ woes > We've gone through two kernel releases with this commit, and I think > I'm understandably curious why it's not been reverted if it's causing > problems with no solution in sight. Even with this commit reverted, the load is incorrect in NO_HZ mode, so revert only is not enough. -- Damien Wyart -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/