Date: Sat, 1 Apr 2000 16:08:25 +0200 From: Gerhard Sittig <Gerhard.Sittig@gmx.net> To: freebsd-stable@freebsd.org Subject: Re: 3.4-RELEASE; panic while paging Message-ID: <20000401160825.A24822@speedy.gsinet> In-Reply-To: <20000401045943.J31173@TK147108.telekabel.at>; from mjy@pobox.com on Sat, Apr 01, 2000 at 04:59:43AM %2B0200 References: <20000329175018.V15889@TK147108.telekabel.at> <20000329195354.A40356@walton.maths.tcd.ie> <20000330205606.B15889@TK147108.telekabel.at> <20000330200422.B16409@dogma.freebsd-uk.eu.org> <14564.50142.22563.853112@onceler.kcilink.com> <20000331223828.X24822@speedy.gsinet> <20000401045943.J31173@TK147108.telekabel.at>
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On Sat, Apr 01, 2000 at 04:59 +0200, Marinos J . Yannikos wrote:
> > Which makes this fact bubble up immediately: The case holds
> > the power supply which is quite essential and can cause
> > random failures when unstable (and yet this part is
> > underestimated and made cheap to save some pennies -- and
> > cause a lot of time and money to be wasted on the grief).
>
> Do you have first-hand experience with power supply related
> problems? [ ... swapped anything, but heavy load still causes
> processes to die erroneously ... ] Does that sound like a
> problem that could be related to the power supply? It's not one
> of the PSUs recommended by AMD, but rated at 300W.
Well, I never had any personnal problems with instable power
supplies (except for some exploded capacitors which will make
problems show up _immediately_:). But I remember a message in a
list somewhere (if only I knew which one it was): It's not so
much about the *total* dimension of this device, or at least
that's not all there is to it. It's also about fitting the needs
of every single voltage provided. Imagine a power supply with
250W but still unable to serve the 5V needs -- no matter how much
reserve there is at -5/-12/+12V! Given the consumption of todays
chips and the usual building the systems for "normal" usage will
make these problems arise real soon (within a year or even
earlier).
All I can advise is to look for special load in these machines:
huge RAM modules or many of these? big fat graphics cards?
overclocked systems? certain Cyrix/IBM or Athlon CPUs? many
hard drives or all of them spinning up at once instead of in a
delayed sequence? too little air flow?
I take it as a hint that it's high computing load (or disk
activity?) increasing the chance for these crashes. But after
all, I'm more of a software guy than a technician ...
BTW: I obviously read this list, so I don't need a courtesy
copy. Seems it's about time to setup a dupe filter unless people
get used to the list-reply functions instead of using
group-reply. It should always be a clear decision whether to
reply in private or in public and appropriate action should be
the consequence.
virtually yours 82D1 9B9C 01DC 4FB4 D7B4 61BE 3F49 4F77 72DE DA76
Gerhard Sittig true | mail -s "get gpg key" Gerhard.Sittig@gmx.net
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