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Re: amd64/129238: [panic] System randomly panics
- To: Jurriaan Nijkamp <alias_(_at_)_jurrie_(_dot_)_net>
- Subject: Re: amd64/129238: [panic] System randomly panics
- From: Holger Kipp <hk_(_at_)_alogis_(_dot_)_com>
- Date: Tue, 2 Dec 2008 15:13:02 +0100
- Cc: freebsd-amd64_(_at_)_freebsd_(_dot_)_org
On Tue, Dec 02, 2008 at 09:20:03AM +0000, Jurriaan Nijkamp wrote:
> The following reply was made to PR amd64/129238; it has been noted by GNATS.
> From: "Jurriaan Nijkamp" <alias_(_at_)_jurrie_(_dot_)_net>
> To: bug-followup_(_at_)_FreeBSD_(_dot_)_org,
> Subject: Re: amd64/129238: [panic] System randomly panics
> Date: Tue, 2 Dec 2008 08:13:22 +0100 (CET)
> After another crash yesterday, I got a new dump which, according to
> someone who knows what he's talking about, is actually useful. He also
> said the problem may lie with faulty memory, but I must say I did a
> memtest86+ test last week which said my memory was working perfectly.
I once had a board (high quality) with memory (high quality) with
memory problems - ie a simple make -j8 buildworld would reliably panic
the system, but running memtest for hours did not show any problems.
It turned out to be a timing issue - we did hit exactly the combination
of memory and mainboard that didn't work well together. We swapped memory
with a different system and both were running fine afterwards.
So please do not rely on output of memtest alone - it is not stressing
the system the way real applications do.
> I am pasting the output of kgdb below.
Can't comment on kgdb-output. Sorry.
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