linux-kernel - Re: Clock jumps

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Message-ID: <4BFF1304.2030605@birkenwald.de>
Date:	Fri, 28 May 2010 02:49:08 +0200
From:	Bernhard Schmidt <berni@...kenwald.de>
To:	john stultz <johnstul@...ibm.com>
CC:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: Clock jumps

On 28.05.2010 02:46, john stultz wrote:

[ dropped kvm ml ]

Hi John,

>> Correct, the box isn't rebooted often, but I do have a few dmesg outputs
>> laying around. lpj was always almost the same until the very last boot
>> which screwed up the clock.
>>
>> dmesg:[    0.000000] Linux version 2.6.33 (root@...02) (gcc version
>> 4.3.2 (Debian 4.3.2-1.1) ) #1 SMP Sun Mar 7 23:01:45 CET 2010
>> dmesg:[    0.008005] Calibrating delay loop (skipped), value calculated
>> using timer frequency.. 5226.64 BogoMIPS (lpj=10453296)
>> dmesg:[    0.288002] Total of 2 processors activated (10546.63 BogoMIPS).
>
> Yea. The bogomips/loops per jiffies are actually calculated with a
> different chunk of code (although its interesting it miscalculated in
> both cases).
>
> Could you send the "Detected xxxx.yyy MHz processor." lines as well?

Sure...

dmesg:[    0.000000] Detected 2613.324 MHz processor.
dmesg.0:[    0.000000] Detected 2660.398 MHz processor.
dmesg.1.gz:[    0.000000] Detected 2659.530 MHz processor.
dmesg.2.gz:[    0.000000] Detected 2659.678 MHz processor.
dmesg.3.gz:[    0.000000] Detected 2659.989 MHz processor.
dmesg.4.gz:[    0.000000] Detected 2659.922 MHz processor.

Bernhard
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