From owner-freebsd-current Thu Aug 22 3:23:54 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DCD3637B400 for ; Thu, 22 Aug 2002 03:23:51 -0700 (PDT) Received: from gw.catspoiler.org (217-ip-163.nccn.net [209.79.217.163]) by mx1.FreeBSD.org (Postfix) with ESMTP id 11E5B43E8A for ; Thu, 22 Aug 2002 03:23:51 -0700 (PDT) (envelope-from dl-freebsd@catspoiler.org) Received: from mousie.catspoiler.org (mousie.catspoiler.org [192.168.101.2]) by gw.catspoiler.org (8.12.5/8.12.5) with ESMTP id g7MANUwr036757; Thu, 22 Aug 2002 03:23:34 -0700 (PDT) (envelope-from dl-freebsd@catspoiler.org) Message-Id: <200208221023.g7MANUwr036757@gw.catspoiler.org> Date: Thu, 22 Aug 2002 03:23:30 -0700 (PDT) From: Don Lewis Subject: Re: Memory corruption in CURRENT To: tlambert2@mindspring.com Cc: mb@imp.ch, sos@freebsd.dk, marks@ripe.net, ktsin@acm.org, freebsd-current@FreeBSD.ORG, hackers@FreeBSD.ORG In-Reply-To: <3D64B111.A57FFB31@mindspring.com> MIME-Version: 1.0 Content-Type: TEXT/plain; charset=us-ascii Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 22 Aug, Terry Lambert wrote: > Alternatively, rather than those options, try losing 512M of > the RAM... I note they are all 1G boxes. When I first put this system together several months ago, I only installed the first 512M of RAM and the problem was much worse. I only had about a 50% chance of getting a successful buildworld. The problem seemed to go away shortly thereafter, and though I wasn't sure whether the problem was caused by hardware or software, I attributed the improvement to an upgrade to a newer version of -current. Since then I've replaced the motherboard (the old one didn't support ECC), the disk and controller (I needed more space, and the new disk consumes a lot less power than the two that it replaced, plus it doesn't sound like a dental drill), and the power supply (because I was concerned that the original might be marginal). I also added an extra intake fan on the front of the case. At the moment I'm running a set of buildworlds with an August 6th kernel, just to verify the problem that I'm seeing isn't something new. When I'm done with that, I'll reduce the RAM from 1G to 512M and try again. I'll also try the DISABLE_PSE and DISABLE_PG_G options. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message