Date: Fri, 24 Dec 2010 18:12:41 -0800 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Carl Johnson <carlj@peak.org> Cc: freebsd-stable@freebsd.org Subject: Re: MCA messages after upgrade to 8.2-BEAT1 Message-ID: <20101225021241.GA96768@icarus.home.lan> In-Reply-To: <87vd2iepkv.fsf@oak.localnet> References: <4D11F1F5.7050902@quip.cz> <201012220957.26854.jhb@freebsd.org> <4D13A579.8090004@langille.org> <AANLkTi=yWh5_0anXyYs4u9KiKpZnC%2BqW%2BAG8YF1Ogbt2@mail.gmail.com> <87vd2iepkv.fsf@oak.localnet>
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On Fri, Dec 24, 2010 at 03:08:48PM -0800, Carl Johnson wrote: > Alan Cox <alan.l.cox@gmail.com> writes: > > > 2010/12/23 Dan Langille <dan@langille.org> > > > >> On 12/22/2010 9:57 AM, John Baldwin wrote: > >> > >>> On Wednesday, December 22, 2010 7:41:25 am Miroslav Lachman wrote: > >>> > >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Bank 0, Status 0xd40e400000000833 > >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Global Cap 0x0000000000000105, > >>>> Status 0x0000000000000000 > >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Vendor "AuthenticAMD", ID 0x40f33, > >>>> APIC ID 0 > >>>> Dec 21 12:42:26 kavkaz kernel: MCA: CPU 0 COR OVER BUSLG Source DRD > >>>> Memory > >>>> Dec 21 12:42:26 kavkaz kernel: MCA: Address 0x236493c0 > >>>> > >>> > >>> You are getting corrected ECC errors in your RAM. You see them once an > >>> hour > >>> because we poll the machine check registers once an hour. If this happens > >>> constantly you might have a DIMM that is dying? > >>> > >> > >> John: > >> > >> I take it these ECC errors *may* have been happening for some time. What > >> has changed is the OS now polls for the errors and reports them. > >> > >> > > Yes, we enabled MCA by default in 8.1-RELEASE. > > Is there some reason that it is only available for i386 and not for > amd64? Linux has something called mcelog, for machine check errors, > which sounds similar and is available for amd64. You mean like what John used in his earlier post on this thread? :-) http://lists.freebsd.org/pipermail/freebsd-stable/2010-December/060705.html If you're looking for it for FreeBSD, it's available below as a patch to the original (I believe): http://www.FreeBSD.org/~jhb/mcelog/ -- | 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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