From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261213AbTD1RPx (ORCPT ); Mon, 28 Apr 2003 13:15:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261216AbTD1RPx (ORCPT ); Mon, 28 Apr 2003 13:15:53 -0400 Received: from e35.co.us.ibm.com ([32.97.110.133]:31921 "EHLO e35.co.us.ibm.com") by vger.kernel.org with ESMTP id S261213AbTD1RPw (ORCPT ); Mon, 28 Apr 2003 13:15:52 -0400 Message-ID: <3EAD645F.8060301@us.ibm.com> Date: Mon, 28 Apr 2003 10:26:55 -0700 From: Dave Hansen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.0) Gecko/20020623 Debian/1.0.0-0.woody.1 X-Accept-Language: en MIME-Version: 1.0 To: Andi Kleen CC: Carl-Daniel Hailfinger , Henti Smith , linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net Subject: Re: [Lse-tech] Re: maximum possible memory limit .. References: <20030424200524.5030a86b.bain@tcsn.co.za> <3EAD27B2.9010807@gmx.net> <20030428141023.GC4525@Wotan.suse.de> <3EAD5AC1.7090003@us.ibm.com> <20030428171455.GC1068@Wotan.suse.de> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Andi Kleen wrote: >>Let's say 32GB :) It boots just fine with 2.5.68, no additional >>patches. There's even half a gig of lowmem free. > > But what happens when you stress test it? No deadlocks? Actually, it is pretty stable. It OOM's a bit more easily, but that isn't a surprise to anyone, especially with the smaller amount of ZONE_NORMAL. I routinely run kernel compiles for days on it with no problems. That is, of course, a NUMA-Q. We're hoping to get a Summit box which is just as big sometime soon. It will be much more interesting. -- Dave Hansen haveblue@us.ibm.com