From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1422878AbWBBCvr (ORCPT ); Wed, 1 Feb 2006 21:51:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1423066AbWBBCvr (ORCPT ); Wed, 1 Feb 2006 21:51:47 -0500 Received: from ms-smtp-02.nyroc.rr.com ([24.24.2.56]:20195 "EHLO ms-smtp-02.nyroc.rr.com") by vger.kernel.org with ESMTP id S1422878AbWBBCvq (ORCPT ); Wed, 1 Feb 2006 21:51:46 -0500 Subject: Re: [PATCH] Avoid moving tasks when a schedule can be made. From: Steven Rostedt To: Peter Williams Cc: Ingo Molnar , Thomas Gleixner , Andrew Morton , LKML In-Reply-To: <43E1636D.1000304@bigpond.net.au> References: <1138736609.7088.35.camel@localhost.localdomain> <20060201130818.GA26481@elte.hu> <20060201131111.GA27793@elte.hu> <43E1636D.1000304@bigpond.net.au> Content-Type: text/plain Date: Wed, 01 Feb 2006 21:51:30 -0500 Message-Id: <1138848690.6632.44.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.2.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2006-02-02 at 12:42 +1100, Peter Williams wrote: > Ingo Molnar wrote: > BTW why do you assume that this problem is caused by can_migrate() > failing and is not just simply due to large numbers of tasks needing to > be moved (which is highly likely to be true when hackbench is running)? That's my fault. In another thread (-rt related) I told Ingo that the problem was with the can_migrate function call. But later I realized that was because I miss read some of my logging output, and discovered that it was indeed passing the can_migrate and getting further. -- Steve