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From: Frode Vatvedt Fjeld <frodef@dslab7.cs.uit.no>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: FreeBSD hangs
Date: 06 Oct 1996 12:58:48 +0200
Organization: University of Tromsoe, Norway
Lines: 36
Message-ID: <2henjcbbpz.fsf@dslab7.cs.uit.no>
References: <FRODEF.96Oct1160443@dslab5.cs.uit.no>
<536d4l$ba@uriah.heep.sax.de>
NNTP-Posting-Host: dslab7.cs.uit.no
X-Newsreader: Gnus v5.2.25/XEmacs 19.14
Thanks a lot for everyones suggestions to why my FreeBSD dies. This
sudden dying has not occured the last few days, so I hope it's gone.
But more likely it's just waiting for me to start some important work
before it makes its move..
I do have parity memory (I think my motherboard requires it), so I
hope FreeBSD would catch DRAM failures, or at least give some message
about it on the console.
I do use write-back cache, and I did see something in the FAQ or
handbook about my chipset (saturn <some numer> rev. 3) being buggy
with respect to wb-cache. This did however not seem to affect linux,
which has been installed on the same machine for some time. I'll
change to write-through next time it hangs (knock wood, eh?). I'm
reluctant to change because of the (although not large) performance
penalty I think this would cause.
I was in fact messing with my scsi-setup and having some trouble with
termination (turned out my cdrom was internally terminated without my
knowing), so this is a plausible reason too.
Last, I discovered an IRQ collision between two ISA devices (sb and
lp) that I now have fixed. Don't know if simple devices like these
can cause the kernel to hang though..?
I have not overclocked the CPU beyond its specifications, it's an
AMDdx4-100 externally fed 33MHz.
All in all, I guess the FreeBSD kernel is "in the clear".. :-) I'm very
satisfied with this system.
Thanks again,
--
Frode Vatvedt Fjeld e-mail..: frodef@stud.cs.uit.no
WWW.....: http://www.cs.uit.no/~frodef/