Date: Mon, 10 Jun 2002 09:13:56 -0700 (PDT) From: Frank Mayhar <frank@exit.com> To: Alain Fauconnet <alain@cscoms.net> Cc: David Schultz <dschultz@uclink.Berkeley.EDU>, freebsd-stable@FreeBSD.ORG Subject: Re: Numerous hard hangs on TWO different ASUS P4T-E w/P4 1.6G Message-ID: <200206101613.g5AGDuCb088693@realtime.exit.com> In-Reply-To: <20020610104015.D9887@cscoms.net>
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Alain Fauconnet wrote: > I will consider doing a CVS upgrade (first I need to learn how > to do it). I dislike the idea of a downgrade to 4.4 or whatever older > than 4.5. > > For what it's worth, the box has *not* hung again since I have > switched off DMA (forced PIO using sysctl). It's clearly not an option > for long-term production mode though, and it has already happened that > it had been stable for weeks, so that doesn't really tell much. Unfortunately, this is not an option for me, since I exclusively use SCSI. > Since the box freezes up solid and I can't enter DDB, I really wonder > what I could do to help tracking down the problem. Suggestions are > welcome. I'm in the same boat... I am completely convinced, now, that this has to do with interrupt sharing. Over the weekend I turned off the parallel port and moved cards around; I tried to turn off IDE but although the BIOS says it's off it's still being detected by probe and the IRQs aren't being freed. May be a BIOS or chipset oddity. Anyway I was able to free a couple of IRQs, 5 and 7, and though I wasn't able to force the sound card to its own interrupt, it is now only sharing IRQ 5 with half of the 39160 card. The upshot: Things are better but of course they aren't fixed. Although it's hard to quantify, the freezes seem to have been reduced in frequency and duration. No hard hangs requiring a reboot yet, but the system has only been back up for a little less than two days. -- Frank Mayhar frank@exit.com http://www.exit.com/ Exit Consulting http://www.gpsclock.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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