Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1767302AbXECBbz (ORCPT ); Wed, 2 May 2007 21:31:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1767308AbXECBbz (ORCPT ); Wed, 2 May 2007 21:31:55 -0400 Received: from dsl081-033-126.lax1.dsl.speakeasy.net ([64.81.33.126]:52244 "EHLO bifrost.lang.hm" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1767302AbXECBby (ORCPT ); Wed, 2 May 2007 21:31:54 -0400 Date: Wed, 2 May 2007 18:31:21 -0700 (PDT) From: david@lang.hm X-X-Sender: dlang@asgard.lang.hm To: linux-kernel@vger.kernel.org Subject: scheduling oddity on 2.6.20.3 stock Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 658 Lines: 18 I needed to recompress some files from .bz2 to .gz so I setup a script to do bunzip2 -c $file.bz2 |gzip -9 >$file.gz I expected that the two CPU heavy processes would end up on different cpu's and spend a little time shuffling data between the two cpu's on a system (dual core opteron) however, instead what I find is that each process is getting 50% of one cpu while the other cpu is 97% idle. David Lang - 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/