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Date:      Wed, 29 Sep 2010 10:37:35 -0700
From:      Jeremy Chadwick <freebsd@jdc.parodius.com>
To:        Vitaly Magerya <vmagerya@gmail.com>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: resume slow on Thinkpad T42 FreeBSD 8-STABLE
Message-ID:  <20100929173735.GB95222@icarus.home.lan>
In-Reply-To: <4CA37645.8080303@gmail.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> <4CA37645.8080303@gmail.com>

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On Wed, Sep 29, 2010 at 08:24:21PM +0300, Vitaly Magerya wrote:
> Jeremy Chadwick wrote:
> > On Wed, Sep 29, 2010 at 09:57:53AM -0700, Chuck Swiger wrote:
> >> Is prime95 testing running stable after waking from sleep?
> 
> Yes, 0 errors, 0 warnings.
> 
> > 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).
> 
> Well, since it causes no other visible problems, it might just as well
> be a false alarm.

Highly possible.  If it bothers you to the point where you'd rather not
see it, you can disable MCA events by setting hw.mca.enabled="0" in
/boot/loader.conf.  I don't know of a way to conditionally ignore
certain MCAs.

-- 
| 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 |




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