From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757478AbYDGK3f (ORCPT ); Mon, 7 Apr 2008 06:29:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756245AbYDGK31 (ORCPT ); Mon, 7 Apr 2008 06:29:27 -0400 Received: from ogre.sisk.pl ([217.79.144.158]:53570 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756076AbYDGK31 (ORCPT ); Mon, 7 Apr 2008 06:29:27 -0400 From: "Rafael J. Wysocki" To: Frans Pop Subject: Re: [rc8] Regression: key repeats and skips in music during compilation Date: Mon, 7 Apr 2008 12:29:26 +0200 User-Agent: KMail/1.9.6 (enterprise 20070904.708012) Cc: linux-kernel@vger.kernel.org, Ingo Molnar , Peter Zijlstra References: <200804041222.35025.elendil@planet.nl> <200804071121.03888.rjw@sisk.pl> <200804071205.13369.elendil@planet.nl> In-Reply-To: <200804071205.13369.elendil@planet.nl> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200804071229.27113.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday, 7 of April 2008, Frans Pop wrote: > On Monday 07 April 2008, Rafael J. Wysocki wrote: > > On Sunday, 6 of April 2008, Rafael J. Wysocki wrote: > > > On Friday, 4 of April 2008, Frans Pop wrote: > > > > While compiling glibc I am getting frequent short skips in music play > > > > anddddddddddddddddd I have now three times seen key repeats (as in > > > > this sentence). When there is a skip in the music, there is also a > > > > delay in characters being typed appearing on the screen. > > > > > > Can you test with CONFIG_GROUP_SCHED unset, please? > > > > I was able to reproduce this issue with -rc8 on one of my test systems, > > Thanks Rafael. > > In the mean time I have verified that the issue also existed in rc6, so it's > not a recent regression. > > > but I'm not any more with the current Linus' tree and CONFIG_GROUP_SCHED > > unset, FWIW. > > Hmm. Does that mean that you _can_ reproduce it with git HEAD and > CONFIG_GROUP_SCHED set? That would mean it is still an issue in HEAD and > group scheduling is the culprit. Well, CONFIG_GROUP_SCHED is known to cause problems, AFAICS, and some fixes are scheduled for the 2.6.26 time frame. Thanks, Rafael