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Date:      Wed, 11 Aug 1999 15:13:50 -0400
From:      tcobb@staff.circle.net
To:        jkh@zippy.cdrom.com
Cc:        freebsd-stable@FreeBSD.ORG
Subject:   RE: On freezes in 3.2-Stable 
Message-ID:  <307D63ED6749CF11AAE9005004461A5B4069@FREYA>

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It happened with TWO Supermicro motherboards, one a P6SBU
the other a P6DBU (one dual, one single).  Both of these
boards had four sticks of RAM in them before, but just
128's.  Could be the electrical issue with more chips on
the 256's.

So, the consensus is that no adjustments are necessary for
FreeBSD to support 1GB or greater?


-Troy Cobb
 Circle Net, Inc.
 http://www.circle.net

   
>   I'm virtually certain thta this is a bogus motherboard.  I know of a
>   number of systems running 1GB of memory that are perfectly stable
>   (including the quad processor Xeon at WC we use for 
>   testing) just as I
>   know of several situations in the past were a motherboard completely
>   fell over after having all of its SIMM sockets populated.  
>   As someone
>   else noted, there are often electrical limitations which present
>   themselves only when you stuff the board full of RAM.  It 
>   would be an
>   easy test to simply swap this motherboard and move the 
>   memory back in.
>   
>   Also, how did you test the memory?  With a hardware tester, I hope,
>   since all software memory tests are inherently bogus.  Don't trust
>   them to tell you anything more than the fact that there's 
>   power to the
>   memory. :)
>   
>   - Jordan
>   


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