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From: gusw@zedat.fu-berlin.de (Gunther Schadow)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Can hardware problems result in SIGSEGV and SIGBUS?
Date: 17 Feb 1997 15:17:33 GMT
Organization: Freie Universitaet Berlin
Lines: 49
Message-ID: <5e9sqd$cse@fu-berlin.de>
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j@uriah.heep.sax.de (J Wunsch) writes:
>Gunther Schadow <gunther@gusw.dialup.fu-berlin.de> wrote:
>
>> can you imagin a broken hardware as the cause of busy processes getting
>> killed rather randomly with SIGSEGV and SIGBUS? For some days now, I get
>
>Of course. Some Linux guy even setup a ``Sig 11 home page'' for this.
do you know an address of that home page?
>> I am completely stucked! Do I have to replace
>> hardware components? A new processor? How can I test this, I mean, I do
>> not have the mony to buy a new i586/133 just to see that the new one
>> does not help.
>
>It's most likely not the CPU. The best test so far is still a ``make
>world'' of a FreeBSD source tree.
So, it might be the board? I guess these PCI boards are rather
unreliable, aren't they? I never heard of or experienced so many
hardware problems with all ISA boards that I had before. Dammit!
>It's very often bad RAM, RAM timing problems, bad cache problems, or
>(with older boards) problems with write-back cache policy on broken
>chipsets when using a busmaster DMA controller.
Bad RAM?! And I payed so much for it! I guess that I have 60ns access
time, should I have bought something better? An other question: if I
disable the external cache (256kB) how much performance do I loose? I
could as well have bought a board without that cache?
>
>You aren't perchance overclocking your CPU?
Sorry? Would you like to explain what "overlocking" is? I would take
care, if I knew. Do you think that the heat in the box that runs about
24h/d being cooled by two ventilators plus one CPU cooler?
thank's, J"org for your excellent help! You are of course an asset to
the FreeBSD community!
-Gunther
--
Gunther Schadow------------------Windsteiner Weg 54a, Berlin 14165, FR. Germany
Dept. of Anaesthesia, Benjamin Franklin University Hospital, Berlin.
gusw@fub46.zedat.fu-berlin.de | http://userpage.fu-berlin/~gusw
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