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Date:      Fri, 11 Apr 1997 09:44:07 -0400
From:      dennis <dennis@etinc.com>
To:        Michael Smith <msmith@atrad.adelaide.edu.au>
Cc:        msmith@atrad.adelaide.edu.au, andreas@klemm.gtn.com, terry@lambert.org, hackers@FreeBSD.ORG
Subject:   Re: 2.2.1R NFS and FTP load problem FOUND
Message-ID:  <3.0.32.19970411094404.00691d28@etinc.com>

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At 11:31 AM 4/11/97 +0930, Michael Smith wrote:
>dennis stands accused of saying:
>> >> 
>> >> BSDI comes with a RAM tester as add on utiliy on the BSDI CD.
>> >> YOu can dd floppy image to floppy, boot from that floppy ...
>> >
>> >I tested a pile of RAM testers here at one stage while I was having a
>> >running brawl with our then-RAM supplier about some memory I knew was
>> >faulty.
>> >
>> >I didn't find a single one that would tell me the memory was busted,
>> >but it most certainly was.  (They eventually relented, stuck it on
>> >their tester, said "oh, well it is actually stuffed" and replaced it.
>> >We shop elsewhere now.)
>> 
>> Blaming "bad ram" is like the doctor telling you you "have a virus" when he
>> has no clue what else to tell you.......
>
>... despite the fact that he's right (most people have several viral
>infections at any given point in time), and that if you're down it's
>the best thing he can tell you anyway.  If you want to argue about
>this, I can redirect you at my SO (biotech) who will happily talk you
>to death on the topic 8)
>
>> If you have real bad ram (a dead pin or a bad location(s)), you get
>> consistent failures that go away when you replace the ram or use
>> another machine. If you have "flakey" ram (bad timing, etc) you get
>> random failures and crashes. f you get the same failure on 2
>> machines with different ram it ain't the ram.....
>
>That's lousy logic there Dennis, and you ought to know that.  Matter of
>fact, the bad RAM I was talking about before was in a group of four 
>machines, and all four were displaying RAM-like failures.  Oddly,
>replacing the RAM cured the problems.
>
>> db
>
>In your particular case, I don't buy the 'bad RAM' problem though.
>Have you considered putting a 'vmstat' binary on the NFS partition
>that you are loading from, and running 'vmstat -m' from the
>holographic shell while the install is going?  Without this sort of
>detail, it's impossible to tell what's going on - I can't reproduce
>your problems; I did an 'everything' install last night using NFS onto
>an 8M 486 (using a locally cut 2.2-STABLE release) and it worked fine.

It seems the only one that fails is "kernel developer"...I can do "everything"
and bin only loads on both machines with 8 meg....if you could try that
it would be cool.

Dennis
>
>-- 
>]] Mike Smith, Software Engineer        msmith@gsoft.com.au             [[
>]] Genesis Software                     genesis@gsoft.com.au            [[
>]] High-speed data acquisition and      (GSM mobile)     0411-222-496   [[
>]] realtime instrument control.         (ph)          +61-8-8267-3493   [[
>]] Unix hardware collector.             "Where are your PEZ?" The Tick  [[
>
>



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