linux-kernel - Re: latest -git: WARNING: at arch/x86/kernel/ipi.c:123 send_IPI_mask

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Message-ID: <20080825183801.GA11894@redhat.com>
Date:	Mon, 25 Aug 2008 14:38:02 -0400
From:	Dave Jones <davej@...hat.com>
To:	Vegard Nossum <vegard.nossum@...il.com>
Cc:	"H. Peter Anvin" <hpa@...nel.org>,
	Andi Kleen <andi@...stfloor.org>,
	the arch/x86 maintainers <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: latest -git: WARNING: at arch/x86/kernel/ipi.c:123
	send_IPI_mask_bitmask+0xc3/0xe0()

On Mon, Aug 25, 2008 at 08:31:04PM +0200, Vegard Nossum wrote:
 
 > Fedora 7 init, which would prompt for the starting of cpuspeed
 > initscript. Turning off echo for the tty was what triggered the
 > slowness; removing cpuspeed from the runlevel entirely solved the
 > problem.
 > 
 > Don't know why cpuspeed would select a governor which runs the CPU at
 > a constant 300 MHz, though.

p4-clockmod is the only cpufreq driver that can run on your hardware.
There's nothing better.   A while back, Fedora stopped loading
(and even building) p4-clockmod, because it sucks so bad.
I can't remember when we made that change, but it sounds like it must
have been a post F7 thing.

	Dave

-- 
http://www.codemonkey.org.uk
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