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Date:      Wed, 7 Jul 2004 11:36:31 -0400
From:      John Baldwin <jhb@FreeBSD.org>
To:        Robert Watson <rwatson@FreeBSD.org>
Cc:        cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/kern sched_ule.c
Message-ID:  <200407071136.31815.jhb@FreeBSD.org>
In-Reply-To: <200407060557.i665vUrW007557@repoman.freebsd.org>
References:  <200407060557.i665vUrW007557@repoman.freebsd.org>

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On Tuesday 06 July 2004 01:57 am, Robert Watson wrote:
> rwatson     2004-07-06 05:57:30 UTC
>
>   FreeBSD src repository
>
>   Modified files:
>     sys/kern             sched_ule.c
>   Log:
>   Temporarily disable preemption in SCHED_ULE due to reported panics and
>   hangs due to recent preemption changes.  This change appears to remove
>   the panic that I was running into, but at the cost of increasing
>   ithread scheduling latency, and as such is a temporary band-aid until
>   jhb has a chance to resolve the ule<->preemption interaction that is
>   the source of the problem.  If it doesn't fix the problem for others--
>   sorry!

It it just broken on SMP?  I actually did the commit from a UP preemption 
kernel using SCHED_ULE from within X11 with KDE, etc. running.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org



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