From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758625AbZANUYW (ORCPT ); Wed, 14 Jan 2009 15:24:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755815AbZANUYN (ORCPT ); Wed, 14 Jan 2009 15:24:13 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:34913 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755417AbZANUYM (ORCPT ); Wed, 14 Jan 2009 15:24:12 -0500 Subject: Re: [git pull] scheduler fixes From: Peter Zijlstra To: Andrew Morton Cc: Ingo Molnar , torvalds@linux-foundation.org, linux-kernel@vger.kernel.org In-Reply-To: <20090114121521.197dfc5e.akpm@linux-foundation.org> References: <20090111144305.GA7154@elte.hu> <20090114121521.197dfc5e.akpm@linux-foundation.org> Content-Type: text/plain Date: Wed, 14 Jan 2009 21:24:07 +0100 Message-Id: <1231964647.14825.59.camel@laptop> Mime-Version: 1.0 X-Mailer: Evolution 2.24.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2009-01-14 at 12:15 -0800, Andrew Morton wrote: > On Sun, 11 Jan 2009 15:43:05 +0100 > Ingo Molnar wrote: > > > Please pull the latest sched-fixes-for-linus git tree > > In http://bugzilla.kernel.org/show_bug.cgi?id=12309 the reporters have > identified what appears to be a sched-related performance regression. > A fairly long-term one - post-2.6.18, perhaps. > > Testcase code has been added today. Could someone please take a look > sometime? There appear to be two different bug reports in there. One about iowait, and one I'm not quite sure what it is about. The second thing shows some numbers and a test case, but I fail to see what the problem is with it.