Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263689AbUD0Cdj (ORCPT ); Mon, 26 Apr 2004 22:33:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263692AbUD0Cdj (ORCPT ); Mon, 26 Apr 2004 22:33:39 -0400 Received: from colin2.muc.de ([193.149.48.15]:51978 "HELO colin2.muc.de") by vger.kernel.org with SMTP id S263689AbUD0Cd2 (ORCPT ); Mon, 26 Apr 2004 22:33:28 -0400 Date: 27 Apr 2004 04:33:27 +0200 Date: Tue, 27 Apr 2004 04:33:27 +0200 From: Andi Kleen To: Darren Hart Cc: lkml , Andi Kleen Subject: Re: sched_domains and Stream benchmark Message-ID: <20040427023327.GB11321@colin2.muc.de> References: <1N7xQ-7fh-29@gated-at.bofh.it> <1083018633.3070.8.camel@farah> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1083018633.3070.8.camel@farah> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 814 Lines: 19 > I noticed your binary ran with N=2000000 which is only sufficient for a > 2 proc 1 MB cache opteron box according to the documentation on the It does not seem to make any difference. > stream faq. I also noticed wide variation in results (25% or so) when > running with 4 threads on a 4 proc opteron on linux-2.6.5-mm5. Can you > provide me with the specs of the system you ran your tests on? Yes, mm5 is still broken because it has the "tuned to numasaurus" numa scheduler. Run it on a standard (non mm*) kernel or with Ingo's early load balance patch. -Andi - 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/