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Date: Thu, 22 Apr 2010 16:50:46 -0700
From: Steve Kargl <sgk@troutmask.apl.washington.edu>
To: Andriy Gapon <avg@icyb.net.ua>
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Cc: freebsd-current@freebsd.org
Subject: Re: MCA messages in /var/log/message?
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On Fri, Apr 23, 2010 at 02:24:03AM +0300, Andriy Gapon wrote:
> on 23/04/2010 01:28 Steve Kargl said the following:
> > How does one interpret the following MCA message?
> > 
> > MCA: Bank 4, Status 0x945a4000d6080a13
> > MCA: Global Cap 0x0000000000000105, Status 0x0000000000000000
> > MCA: Vendor "AuthenticAMD", ID 0xf5a, APIC ID 0
> > MCA: CPU 0 COR BUSLG Responder RD Memory
> > MCA: Address 0x70c42280
> > MCA: Bank 4, Status 0x942140012a080813
> > MCA: Global Cap 0x0000000000000105, Status 0x0000000000000000
> > MCA: Vendor "AuthenticAMD", ID 0xf5a, APIC ID 1
> > MCA: CPU 1 COR BUSLG Source RD Memory
> > MCA: Address 0x1b97ca578
> > 
> > It appears that these messages coincide with a 15 to 30
> > second period where my USB mouse inexplicably loses a
> > large number of button clicks, (which is quite noticable
> > with firefox3).
> 
> This very much looks like DRAM ECC error.
> You seem to have family Fh AMD processor, so I am not entirely sure.
> But for 10h processors BKDG table 80 (NB error signatures) definitely specifies
> that extended error code of 8 (in bits 20:16) means ECC error.
> 

Thanks for the information.  The system that generates these
messages is getting long in the tooth.  Guess it's time to
reboot and run memtest86+ on the system.

-- 
Steve