Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753390AbZAESvX (ORCPT ); Mon, 5 Jan 2009 13:51:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752165AbZAESvO (ORCPT ); Mon, 5 Jan 2009 13:51:14 -0500 Received: from relay1.sgi.com ([192.48.179.29]:50211 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751910AbZAESvO (ORCPT ); Mon, 5 Jan 2009 13:51:14 -0500 Date: Mon, 5 Jan 2009 12:51:11 -0600 From: Dimitri Sivanich To: Gregory Haskins Cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Ingo Molnar , Mike Galbraith , Srivatsa Vaddagiri , Greg KH , Nick Piggin , Robin Holt Subject: Re: 2.6.27.8 scheduler bug - threads not being scheduled for long periods Message-ID: <20090105185111.GA18084@sgi.com> References: <20090105175641.GA17055@sgi.com> <49625519.4050902@novell.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <49625519.4050902@novell.com> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1284 Lines: 39 Hi Greg, On Mon, Jan 05, 2009 at 01:44:41PM -0500, Gregory Haskins wrote: > Dimitri Sivanich wrote: > > > > I'm wondering if anyone else has run into this problem, and whether they've > > found a resolution for it? > > > > > > Hi Dimitri, > I have observed similar problems on my opensuse 11.0 box (2.6.25 > based) when doing kernel builds. Often times other apps will get > starved (like firefox, etc). I was talking to peterz about it and he > pointed me at a commit that went into 28-rcx that fixes this (the sha > escapes me at the moment). I've been meaning to pull the patch into our > 2.6.25 and 2.6.27 trees to verify if it fixes it, but I have fairly high > confidence it will. Perhaps Peter can point you at the same patch and > you can give it a whirl. For the time being, can you see if 28 is fixed? > 2.6.28 appears to be a little bit worse, actually: Counts: 0: 50165855 1: 8879 2: 5462 3: 4990 4: 91805284 ^C # uname -r 2.6.28-03114-g3c92ec8 The master thread hangs up after printing only one set of counts. -- 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/