From owner-freebsd-stable@FreeBSD.ORG Fri Oct 1 18:07:57 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 3A97D1065673 for ; Fri, 1 Oct 2010 18:07:57 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout025.mac.com (asmtpout025.mac.com [17.148.16.100]) by mx1.freebsd.org (Postfix) with ESMTP id 1D9AA8FC15 for ; Fri, 1 Oct 2010 18:07:56 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; CHARSET=US-ASCII Received: from cswiger1.apple.com (unknown [17.209.4.71]) by asmtp025.mac.com (Oracle Communications Messaging Exchange Server 7u4-18.01 64bit (built Jul 15 2010)) with ESMTPSA id <0L9I00J4XQN16S00@asmtp025.mac.com> for freebsd-stable@freebsd.org; Wed, 29 Sep 2010 10:16:14 -0700 (PDT) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.0.10011,1.0.148,0.0.0000 definitions=2010-09-29_08:2010-09-29, 2010-09-29, 1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=6.0.2-1004200000 definitions=main-1009290108 From: Chuck Swiger In-reply-to: <20100929170757.GA94672@icarus.home.lan> Date: Wed, 29 Sep 2010 10:16:13 -0700 Message-id: <2B9D8374-AA0A-4F2C-9681-5216204859F8@mac.com> 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> <20100929170757.GA94672@icarus.home.lan> To: Jeremy Chadwick X-Mailer: Apple Mail (2.1081) 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: Fri, 01 Oct 2010 18:07:57 -0000 On Sep 29, 2010, at 10:07 AM, Jeremy Chadwick wrote: > On Wed, Sep 29, 2010 at 09:57:53AM -0700, Chuck Swiger wrote: >> >> 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. It's doing the same math operations; something like "mprime -t" is the same as the Win32 test mode per the docs: -t Run the torture test. Same as Options/Torture Test. > 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). That sounds reasonable to me, but I'm wary of uncorrected errors which seem to be reproducible to specific circumstances. > 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. Sure, if the MCA report is reflecting a legitimate problem, and it was happening more often than every few minutes, and it happened after a cold reboot rather than after wakeup from sleep.... :-) I place more faith in ~17 hours of Prime95/mprime working OK to validate that the hardware is not obviously broken. Regards, -- -Chuck