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Date: Fri, 16 Jan 2009 14:48:29 +0300
From: Artem Kuchin <matrix@itlegion.ru>
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To: Alexander Best <alexbestms@math.uni-muenster.de>
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Cc: freebsd-current@freebsd.org
Subject: Re: FreeBSD panics with 64GiB of RAM
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Alexander Best ?????:
> unfortunately there's (probably) nobody here using a computer with that much
> memory. finding the problem without using similar hardware in order to have a
> closer look at the problem is very difficult i guess.
>
>   

But how do you know if it is really memory related? Take out half of the 
memory and see what happens.
If it still crashed then take out all but one module and see.