linux-kernel - Re: Clocksource tsc is always unstable with 2.6.25-* kernels and CONFIG_NO

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Message-ID: <alpine.LFD.1.00.0802252031180.7583@apollo.tec.linutronix.de>
Date:	Mon, 25 Feb 2008 20:39:30 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Gabriel C <nix.or.die@...glemail.com>
cc:	Robert Hancock <hancockr@...w.ca>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Gabriel C <crazy@...galware.org>
Subject: Re: Clocksource tsc is always unstable with 2.6.25-* kernels and
 CONFIG_NO_HZ=y on my box

On Mon, 25 Feb 2008, Gabriel C wrote:
> >>> Booting nohz=off fixes that.
> >>>
> >>> Another strange thing is when I try to boot that kernel with
> >>> clocksource=acpi_pm it just hangs.

What happens if you add clocksource=acpi_pm and nohz=off to the kernel
commandline ?

> >> Please post your full dmesg output.
> > 
> > Yes please.
>
> dmesg's from 2.6.25-rc3 witch nohz={on,off} , lspci , dmidecode and
> the used config for this kernel can be found there :
>
> http://frugalware.org/~crazy/dmesg/lara/

Hmm. Nothing really obvious.

Thanks,
	tglx
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