Strange dmesg entry, MCA

[Chuck Swiger]

On Jun 4, 2012, at 4:13 PM, Rod Person wrote:
> I'm seen this once or twice and it show up again today, I'm not exactly
> sure what these MCA lines are telling me. Is this something to worry
> about?
> 
> fuse4bsd: version 0.3.9-pre1, FUSE ABI 7.8
> pid 90013 (cppunittester), uid 0: exited on signal 11 (core dumped)
> MCA: Bank 4, Status 0x9445400000000a13
> MCA: Global Cap 0x0000000000000105, Status 0x0000000000000000
> MCA: Vendor "AuthenticAMD", ID 0x20f12, APIC ID 0
> MCA: CPU 0 COR BUSLG Responder RD Memory
> MCA: Address 0x1d11afcd0
> MCA: Bank 2, Status 0xd000400000000863
> MCA: Global Cap 0x0000000000000105, Status 0x0000000000000000
> MCA: Vendor "AuthenticAMD", ID 0x20f12, APIC ID 1
> MCA: CPU 1 COR OVER BUSLG Source PREFETCH Memory

Your CPUs were seeing correctible errors (probably via ECC memory or bus path); if they only happen rarely, it's probably OK to ignore them, but it's likely worth running memtest86 or prime95 overnight and seeing whether they find problems.

Regards,
-- 
-Chuck