From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965569AbXC1BSx (ORCPT ); Tue, 27 Mar 2007 21:18:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965564AbXC1BSx (ORCPT ); Tue, 27 Mar 2007 21:18:53 -0400 Received: from fgwmail7.fujitsu.co.jp ([192.51.44.37]:53668 "EHLO fgwmail7.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965569AbXC1BSw (ORCPT ); Tue, 27 Mar 2007 21:18:52 -0400 X-Greylist: delayed 85295 seconds by postgrey-1.27 at vger.kernel.org; Tue, 27 Mar 2007 21:18:52 EDT Date: Wed, 28 Mar 2007 10:16:36 +0900 Message-ID: <874po6tbez.wl%takeuchi_satoru@jp.fujitsu.com> From: Satoru Takeuchi To: Ingo Molnar Cc: Satoru Takeuchi , Linux Kernel Subject: Re: [BUG] scheduler: strange behavor with massive interactive processes In-Reply-To: <20070327191420.GB29929@elte.hu> References: <87r6rb1nbm.wl%takeuchi_satoru@jp.fujitsu.com> <20070327191420.GB29929@elte.hu> User-Agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.8 (=?ISO-8859-4?Q?Shij=F2?=) APEL/10.6 Emacs/21.4 (i486-pc-linux-gnu) MULE/5.0 (SAKAKI) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Ingo, At Tue, 27 Mar 2007 21:14:20 +0200, Ingo Molnar wrote: > > > * Satoru Takeuchi wrote: > > > Hi Ingo and all, > > > > When I was executing massive interactive processes, I found that some > > of them occupy CPU time and the others hardly run. > > yeah. > > > I also attach the test program which easily recreates this problem. > > thanks, this is really helpful - does the patch below improve the > situation? Thank you for your quick response. Although I'm a bit busy and can't test it now, I'll probably be able to test it and report the results by the end of this week. Satoru