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List:       linux-smp
Subject:    Re: CPU clock 180 ,200??
From:       Jorge Nerin <jnerin+comandante () svalero ! es>
Date:       1999-12-16 2:14:22
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Well, in 2.3.33 it's fixed:

calibrating APIC timer ...
..... CPU clock speed is 200.4548 MHz.
..... host bus clock speed is 66.8179 MHz.
cpu: 1, clocks: 668179, slice: 222726, nr: 2.
CPU1<C0:668176,C:222720,D:4,S:222726,C:668179>
cpu: 0, clocks: 668179, slice: 222726, nr: 1.
CPU0<C0:668160,C:445424,D:10,S:222726,C:668179>
checking TSC synchronization across CPUs: passed.

I don't know 2.3.32 because I downloaded both patches at the same time,
and applied both of them.

Thanks for the replies.

George wrote:
> 
> On Sat, 11 Dec 1999, Robert M. Hyatt wrote:
> 
> >count the digits. 2xxxxxxxx hertz is 200 megahertz...
> 
> He means the variation between APIC and CPU:
> 
> >> Detected 200456554 Hz processor.
> [...]
> >> calibrating APIC timer ...
> >> ..... CPU clock speed is 180.4136 MHz.
> >> ..... host bus clock speed is 60.1374 MHz.
> 
> On my machine:
> 
> Detected 232108703 Hz processor.
> [...]
> calibrating APIC timer ...
> ..... CPU clock speed is 232.1067 MHz.
> ..... system bus clock speed is 66.3160 MHz.
> 
> I would imagine the APIC and CPU not agreeing about MHz would be bad. :)
> 
> -George Greer

-- 
Jorge Nerin
<jnerin@svalero.es>
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