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Date:      Sat, 28 Jul 2007 23:00:15 +0200
From:      Michael Nottebrock <lofi@freebsd.org>
To:        Kris Kennaway <kris@obsecurity.org>
Cc:        bruno@freebsd.org, freebsd-acpi@freebsd.org, freebsd-stable@freebsd.org, JoaoBR <joao@matik.com.br>, Nate Lawson <nate@root.org>
Subject:   Re: powerd freeze with amd 5000 X2 but not with lower cpus
Message-ID:  <46ABAE5F.8060901@freebsd.org>
In-Reply-To: <20070728174717.GA66065@rot26.obsecurity.org>
References:  <200707271109.51334.joao@matik.com.br> <200707290614.18469.joao@matik.com.br> <46AB160D.6040207@freebsd.org> <200707290833.56202.joao@matik.com.br> <46AB48A7.8060103@freebsd.org> <20070728174717.GA66065@rot26.obsecurity.org>

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Kris Kennaway schrieb:
> On Sat, Jul 28, 2007 at 03:46:15PM +0200, Michael Nottebrock wrote:
>
>  =20
>> Meanwhile I found a workaround for my system: I had SCHED_ULE configur=
ed
>> in my kernel - switching to SCHED_4BSD gets rid of the freezes. Should=

>> have thought of that sooner, ISTR having problems with powerd and
>> SCHED_ULE even on single cpu P4s.
>>    =20
>
> I see you've now learned a reason why no-one should be using SCHED_ULE
> on FreeBSD < 7 ;-)
>  =20
=2E.. and with SCHED_ULE being obsoleted by SCHED_SMP in 7+, it might
actually become the scheduler nobody was ever supposed to be using? It
might still be worthwhile doing some experimenting with powerd and the
different schedulers in -CURRENT, just in case 4BSD ever gets knocked
from GENERIC. :)

Cheers,
--=20
   ,_,   | Michael Nottebrock               | lofi@freebsd.org
 (/^ ^\) | FreeBSD - The Power to Serve     | http://www.freebsd.org
   \u/   | K Desktop Environment on FreeBSD | http://freebsd.kde.org



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