From owner-freebsd-stable@FreeBSD.ORG Wed Sep 29 17:07:59 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8BAEF1065670 for ; Wed, 29 Sep 2010 17:07:59 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from qmta15.emeryville.ca.mail.comcast.net (qmta15.emeryville.ca.mail.comcast.net [76.96.27.228]) by mx1.freebsd.org (Postfix) with ESMTP id 626D08FC14 for ; Wed, 29 Sep 2010 17:07:58 +0000 (UTC) Received: from omta18.emeryville.ca.mail.comcast.net ([76.96.30.74]) by qmta15.emeryville.ca.mail.comcast.net with comcast id Ccu11f0041bwxycAFh7ye9; Wed, 29 Sep 2010 17:07:58 +0000 Received: from koitsu.dyndns.org ([98.248.41.155]) by omta18.emeryville.ca.mail.comcast.net with comcast id Ch7x1f00R3LrwQ28eh7y1e; Wed, 29 Sep 2010 17:07:58 +0000 Received: by icarus.home.lan (Postfix, from userid 1000) id A755C9B418; Wed, 29 Sep 2010 10:07:57 -0700 (PDT) Date: Wed, 29 Sep 2010 10:07:57 -0700 From: Jeremy Chadwick To: Chuck Swiger Message-ID: <20100929170757.GA94672@icarus.home.lan> References: <20100224165203.GA10423@zod.isi.edu> <20100927170317.I90633@sola.nimnet.asn.au> <4CA0E892.4010204@gmail.com> <201009271621.17669.jkim@FreeBSD.org> <4CA2488D.7000101@gmail.com> <04FA16F2-26AD-425D-9E4A-2A923219B73E@mac.com> <4CA35E64.1040101@gmail.com> <0FDB4144-8BE4-4BA5-B911-8652E07D60C2@mac.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0FDB4144-8BE4-4BA5-B911-8652E07D60C2@mac.com> User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd-stable@freebsd.org, Vitaly Magerya Subject: Re: resume slow on Thinkpad T42 FreeBSD 8-STABLE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Sep 2010 17:07:59 -0000 On Wed, Sep 29, 2010 at 09:57:53AM -0700, Chuck Swiger wrote: > Hi-- > > On Sep 29, 2010, at 8:42 AM, Vitaly Magerya wrote: > > The test run for 17 hours without any problems (or MCA messages), > > That part is good. At least starting from normal operation, your laptop is running stably under load.... > > > then I put the laptop for a 5 minute sleep, resumed the test, and after 30 > > minutes of it there are now two MCA messages in dmesg. Are they somehow > > related, or is this a coincidence? > > I doubt repeated coincidences. :-) Is prime95 testing running stable after waking from sleep? He's not running Prime95 (native Win32 app), he's running ports/math/mprime under FreeBSD natively. I don't know if this application stresses hardware to the same degree Prime95 does; I've used Prime95 many times to burn in new workstations. The Thinkpad hardware he's on is """old""" (note the quotes), so I wouldn't be surprised if the CPU (Intel Pentium M) happens to induce a strange/odd MCA event as a result of going in/out of sleep state. It could be a general system bug of some sort as well (one which has no repercussions). Look at it this way: if his L1 cache was going bad, his system would be freaking out doing literally anything (booting the kernel for example); I'm under the impression Pentium M CPUs do not have ECC L1 cache. -- | Jeremy Chadwick jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |