Return-path: Received: from cpsmtpm-eml103.kpnxchange.com ([195.121.3.7]:64511 "EHLO CPSMTPM-EML103.kpnxchange.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755926AbZJHVAN (ORCPT ); Thu, 8 Oct 2009 17:00:13 -0400 From: Frans Pop To: Mike Galbraith Subject: Re: [.32-rc3] scheduler: iwlagn consistently high in "waiting for CPU" Date: Thu, 8 Oct 2009 22:59:34 +0200 Cc: Arjan van de Ven , Linux Kernel Mailing List , Ingo Molnar , Peter Zijlstra , linux-wireless@vger.kernel.org References: <200910051500.55875.elendil@planet.nl> <200910081655.37485.elendil@planet.nl> <1255026217.6643.12.camel@marge.simson.net> In-Reply-To: <1255026217.6643.12.camel@marge.simson.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Message-Id: <200910082259.35204.elendil@planet.nl> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thursday 08 October 2009, Mike Galbraith wrote: > I still see very high latencies coming out of idle (last noted was > > 300ms, NO_HZ) with this patch, > > Like this: > > Cause Maximum Percentage > Scheduler: waiting for cpu 604.2 msec 49.0 % I'm not seeing anything even remotely like that. I've tried quieting the system down as much as possible, but that made no difference. I do have NO_HZ set; will send my full config privately. If you'd still like me to try your patch I will, but I'm not sure if that has much value. Cheers, FJP