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Date:      Sun, 30 Aug 2009 13:53:12 +0400
From:      "Marat N.Afanasyev" <amarat@ksu.ru>
To:        mahlerrd@yahoo.com
Cc:        FreeBSD-Stable <freebsd-stable@freebsd.org>
Subject:   Re: Fatal Trap 12 in various processes always at address 0x3030313a
Message-ID:  <4A9A4C08.2070100@ksu.ru>
In-Reply-To: <830165.37536.qm@web51009.mail.re2.yahoo.com>
References:  <830165.37536.qm@web51009.mail.re2.yahoo.com>

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Richard Mahlerwein wrote:
> --- On Sat, 8/29/09, Marat N.Afanasyev <amarat@ksu.ru> wrote:
> 
>> From: Marat N.Afanasyev <amarat@ksu.ru>
>> Subject: Re: Fatal Trap 12 in various processes always at address 0x3030313a
>> To: mahlerrd@yahoo.com
>> Cc: "FreeBSD-Stable" <freebsd-stable@freebsd.org>
>> Date: Saturday, August 29, 2009, 6:59 PM
>> such trap could be triggered by 'floating' memory/cache
>> error. and i think that you should try to suspect memory
>> first. memtest helps to diagnose most of memory problems,
>> but not all.
>>
>> -- SY, Marat
>>
> 
> How can I test that?  If a buildworld will complete successfully several times (with mildly different source, even), and memtest86+ won't find it, how can I tell if that's the problem or not?
> 

I ususally do md5 of large tmpfs based file. make tmpfs as large as 
possible, create a big file in the tmpfs and calculate md5 of this file 
many times.

-- 
SY, Marat

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