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Date:      Wed, 20 Sep 2000 10:09:23 -0700 (PDT)
From:      John Baldwin <jhb@FreeBSD.ORG>
To:        Siobhan Patricia Lynch <trish@bsdunix.net>
Cc:        smp@FreeBSD.ORG, "Andrey A. Chernov" <ache@nagual.pp.ru>, current@FreeBSD.ORG, Bruce Evans <bde@zeta.org.au>
Subject:   Re: recent kernel, microuptime went backwards
Message-ID:  <XFMail.000920100923.jhb@FreeBSD.org>
In-Reply-To: <Pine.BSO.4.21.0009201047110.16963-100000@superconductor.rush.net>

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On 20-Sep-00 Siobhan Patricia Lynch wrote:
> John,
>       I get these on an SMP kernel, which locks up the box, I can't even
> figure out where exactly its happening. Maybe I'm just missing something
> in my kernel config file? I assumed (from UPDATING) that no real change
> was
> needed to the SMP options?

No, it is probably a bug in the code with this scheduling mess.  On the
quad xeon here, very recent kernels are spinning during the acd0
probe with interrupts disabled, so there may be a few places where
interrupts aren't being handled properly.

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.cslab.vt.edu/~jobaldwi/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/


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