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From: gusw@zedat.fu-berlin.de (Gunther Schadow)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Bus Error
Date: 17 Feb 1997 15:04:48 GMT
Organization: Freie Universitaet Berlin
Lines: 60
Message-ID: <5e9s2g$cco@fu-berlin.de>
References: <32E8B00E.346A@sh.cvut.cz> <5cj26s$mau@ns.qnis.net> <5cjqd4$95a@dismay.ucs.indiana.edu> <32EEA4A3.167EB0E7@sh.cvut.cz>
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Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:35703
Jaroslav Klaus <j.klaus@sh.cvut.cz> writes:
>John Fieber wrote:
>>
>> In article <5cj26s$mau@ns.qnis.net>,
>> phil@ns.qnis.net (Phil Jensen) writes:
>> > In article <32E8B00E.346A@sh.cvut.cz>,
>> > Jaroslav Klaus <J.Klaus@sh.cvut.cz> wrote:
>> >>The 2.1.6(5)-RELEASE very often gives me "Bus Error - core dumped"
>> >>message.
>> >>Also the cc compiler in the 2.2-BETA (APLHA) is being killed by signals
>> >>11 or 10.
>> >>I think it's similar problem. Could anybody help me?
>> >
>> > Jarda,
>> > Try turning your external cache off in your BIOS. I'm observed this
>> > problem several times with the external cache on. Disabling it
>> > usually does the trick.
>>
>> If turning of the cache solves the problem, then also check for any
>> "memory remapping" options in BIOS and turn them off if they are on,
>> then try re-enabling the cache.
>>
>> What happens is that the area of memory used by BIOS (between
>> 640k-1MB) gets remapped somewhere else where it can be used.
>> However, your system may not be able to use it correctly. In my
>> system, for example, the maximum installable RAM is 32 megabytes.
>> With 32 megabytes installed and remapping enabled, this turns into 32
>> megabytes plus a little more. It just so happens that the external
>> cache gets terribly confused by that extra little bit! I was able to
>> eleminate the symptom by turning off the cache, but it took me quite
>> a bit longer to figure out the real cause.
>>
>> -john
>
>I tried every combinatios of memory shadows(on/off) and external
>cache(on/off)
>and another parameters of my BIOS Setup. Nothing has changed.
>It is strange because Linux on this machine works properly. BUT I LIKE
>FREEBSD
>MUCH MORE THEN LINUX so I wish to solve my Bus Error problem.
>THANK YOU VERY MUCH.
>--
>Jarda
Joerg Wunsch made some interesting statements about the Sig 10/11
problem as a reply to a similar thread: "Can hardware problems cause
SIGBUS and SIGSEGV". I experienced these problems with my 2.1-REL.
installation, which runned just fine for about 7 months, until
recently I get these signals on busy processes. The LINUX people have
similar problems and, as Joerg said, there are whole discussion groups
dedicated to it. So, changing to Linux wil probably be of little use.
regards
-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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