Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 18 Oct 2001 19:01:12 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 18 Oct 2001 19:00:53 -0400 Received: from adsl-63-194-239-202.dsl.lsan03.pacbell.net ([63.194.239.202]:46329 "EHLO mmp-linux.matchmail.com") by vger.kernel.org with ESMTP id ; Thu, 18 Oct 2001 19:00:42 -0400 Date: Thu, 18 Oct 2001 16:01:09 -0700 From: Mike Fedyk To: "Brian C. Thomas" , linux-kernel@vger.kernel.org Subject: Re: severe performance degradation on serverworks with high mem Message-ID: <20011018160109.C2467@mikef-linux.matchmail.com> Mail-Followup-To: "Brian C. Thomas" , linux-kernel@vger.kernel.org In-Reply-To: <20011018125714.A360@nature.Berkeley.edu> <20011018144504.B134@nature.Berkeley.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20011018144504.B134@nature.Berkeley.edu> User-Agent: Mutt/1.3.23i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 18, 2001 at 02:45:05PM -0700, Brian C. Thomas wrote: > Hi > > I don't know if this helps, but I seem to have stumbled onto a > possible "fix" for this... > > With 64GB high memory enabled in kernel 2.4.12-ac3, and mtrr turned > on, I was able to see all 8GB RAM on my machine by using the old > 'append="mem=8000M"' command in my lilo.conf file... AND WITH NO LOSS > OF PERFORMANCE! > > Does that help anyone with defining where this problem is coming from? > The real question is how to reproduce the > 2hr kernel compiles. Are there any certain steps that would reliably create the problem, and if so what are they? - 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/