From owner-freebsd-stable Wed Nov 22 16:42:14 2000 Delivered-To: freebsd-stable@freebsd.org Received: from grumpy.dyndns.org (cm-24-246-28-166.toney.mediacom.ispchannel.com [24.246.28.166]) by hub.freebsd.org (Postfix) with ESMTP id A6B0C37B4C5 for ; Wed, 22 Nov 2000 16:42:08 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by grumpy.dyndns.org (8.11.1/8.11.1) with ESMTP id eAN0fHS03658; Wed, 22 Nov 2000 18:41:17 -0600 (CST) (envelope-from dkelly@grumpy.dyndns.org) Message-Id: <200011230041.eAN0fHS03658@grumpy.dyndns.org> X-Mailer: exmh version 2.2 06/23/2000 with nmh-1.0.4 To: apina@infolink.com.br Cc: "David A. Bader" , freebsd-stable@FreeBSD.ORG From: David Kelly Subject: Re: make world on 4.2-R breaking In-reply-to: Message from "Antonio Carlos Pina" of "Wed, 22 Nov 2000 13:20:08 EST." <3a1bf238.253.0@infolink.com.br> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Wed, 22 Nov 2000 18:41:17 -0600 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG "Antonio Carlos Pina" writes: > David, I have a little program (I don't recall who wrote it, sorry) > that tests memory, stressing it. I can tell that it hangs a bad > machine (cpu or bus or memory) in 2 or 3 minutes. It fits in a floppy > and it is a DOS program. If you want a copy, I can send it to you. Yeah. But. Remember a memory test program can not prove memory is good. It can only prove memory is bad. And then only if it happens to be very bad. Memory can and does fail when certian sequences of events happen. The trick is to reproduce that sequence. The Right Thing is to buy parity memory and enable ECC in your MB chipset. Not all MB's do ECC. But at least with ECC you can keep on running. Haven't seen if FreeBSD will or won't log an ECC correction. Good hardware such as SGI and Sun will note the corrections and their location via syslog so a good administrator can schedule a repair if ECC events persist. -- David Kelly N4HHE, dkelly@hiwaay.net ===================================================================== The human mind ordinarily operates at only ten percent of its capacity -- the rest is overhead for the operating system. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message