linux-kernel - Re: Linux 2.6.29-rc6

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Message-ID: <49AAEC6D.9000200@krogh.cc>
Date:	Sun, 01 Mar 2009 21:13:33 +0100
From:	Jesper Krogh <jesper@...gh.cc>
To:	john stultz <johnstul@...ibm.com>
CC:	Thomas Gleixner <tglx@...utronix.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Len Brown <len.brown@...el.com>
Subject: Re: Linux 2.6.29-rc6

john stultz wrote:
>> Working (clocksource=tsc) 2.6.26.8
>> jk@...d03:~$ ntpdc -c kerninfo
>> pll offset:           0.003208 s
>> pll frequency:        -25.070 ppm
> [snip]
>> Non-working (clocksource=tsc) 2.6.29-rc6
>> jk@...d12:~$ ntpdc -c kerninfo
>> pll offset:           0 s
>> pll frequency:        -34.754 ppm
> 
> 
> Ok, so it seems ntp hasn't really had a chance to settle down, its only
> made a 10ppm adjustment so far. NTPd will stop corrections at ~
> +/-500ppm, so you're not at that bound yet, where things would be really
> broken.

But I should settle within a "reasonable" period of time? (not hours?).

> If the affected kernel isn't resetting in the logs anymore, I'd be
> interested in what the new ppm value is.

I keeps resetting after 7 hours ..   Is there more information I can 
provide?

Jesper

-- 
Jesper
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