From owner-freebsd-bugs  Thu Apr  6 10:12:45 2000
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To: Martin Minkus <diskiller@borg-cube.com>
Cc: hackers@FreeBSD.ORG, bugs@FreeBSD.ORG
Subject: Re: calcru: negative time 
In-Reply-To: Message from Martin Minkus <diskiller@borg-cube.com> 
   of "Thu, 06 Apr 2000 21:06:49 +0930." <Pine.BSF.4.21.0004062104400.62885-100000@bender.on.diskiller.net> 
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Date: Thu, 06 Apr 2000 10:12:22 -0700
Message-ID: <17557.955041142@pinhead.parag.codegen.com>
From: Parag Patel <parag@cgt.com>
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On Thu, 06 Apr 2000 21:06:49 +0930, Martin Minkus wrote:
>
>calcru: negative time of xxxxxxxxxx usec for pid yyyyy (dnetc)

I've been seeing the same problem sporadically on my 2xPII box that I
upgraded from 3.4 to 4.0.  It *only* occurs for the setiathome binary,
and it *seems* to be triggered when the X server is restarted after
logout/login via xdm.

I went through the suggestions in the troubleshooting section of the
FAQ, namely trying kern.timecounter.method=1 and such.  Curiously, it
made no difference.  Even more curiously, the same machine used to work
just fine under 3.4 without this mod (timecounter hardware is PIIX).

I had recently shuffled the audio card around in my system to try to
figure out an unrelated problem with why audio recording isn't working.
Turns out that the current slot the PCI sound card is now sitting in
appears to be sharing an IRQ with the video card.  I need to take the
machine down and move the card out of this slot to see if the calcru
errors continue or not, since it does appear to be interrupt related.

I just haven't had the time to take my box down to try this yet, and so
wasn't going to post a note 'till I'd figured it out.  Hopefully you
have a bit more free time to experiment.


	-- Parag Patel


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