count the digits. 2xxxxxxxx hertz is 200 megahertz...
Robert Hyatt Computer and Information Sciences
[EMAIL PROTECTED] University of Alabama at Birmingham
(205) 934-2213 115A Campbell Hall, UAB Station
(205) 934-5473 FAX Birmingham, AL 35294-1170
On Fri, 10 Dec 1999, Jorge Nerin wrote:
> Kernel 2.3.31, two Pentiums 200mmx, but I noticed this:
>
> /proc/cpuinfo
>
> processor : 0
> vendor_id : GenuineIntel
> cpu family : 5
> model : 4
> model name : Pentium MMX
> stepping : 3
> cpu MHz : 200.456554
> fdiv_bug : no
> hlt_bug : no
> sep_bug : no
> f00f_bug : yes
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr mce cx8 apic mmx
> bogomips : 399.77
>
> processor : 1
> vendor_id : GenuineIntel
> cpu family : 5
> model : 4
> model name : Pentium MMX
> stepping : 3
> cpu MHz : 200.456554
> fdiv_bug : no
> hlt_bug : no
> sep_bug : no
> f00f_bug : yes
> coma_bug : no
> fpu : yes
> fpu_exception : yes
> cpuid level : 1
> wp : yes
> flags : fpu vme de pse tsc msr mce cx8 apic mmx
> bogomips : 400.59
>
> Everything correct, but in dmesg I can see these:
> ..
> Detected 200456554 Hz processor.
> ..
> calibrating APIC timer ...
> ..... CPU clock speed is 180.4136 MHz.
> ..... host bus clock speed is 60.1374 MHz.
> cpu: 1, clocks: 601374, slice: 200458, nr: 2.
> CPU1<C0:601360,C:200432,D:12,S:200458,C:601374>
> cpu: 0, clocks: 601374, slice: 200458, nr: 1.
> CPU0<C0:601344,C:400880,D:6,S:200458,C:601374>
> checking TSC synchronization across CPUs: passed.
> Setting commenced=1, go go go
>
>
> But it was (2.3.22):
> calibrating APIC timer ...
> ..... CPU clock speed is 200.4525 MHz.
> ..... host bus clock speed is 66.8169 MHz.
> cpu: 1, clocks: 668169, slice: 222723, nr: 2.
> CPU1<C0:668160,C:222704,D:10,S:222723,C:668169>
> cpu: 0, clocks: 668169, slice: 222723, nr: 1.
> CPU0<C0:668096,C:445360,D:13,S:222723,C:668169>
> checking TSC synchronization across CPUs: passed.
> Setting commenced=1, go go go
>
> So... What has happened with my megahertzs?? Where are them?? Perhaps there is a
> way to steal Mhzs in the new kernel code?? Linux power??
>
> If someone will point me that I can have changed my setup, I can say that my
> bios says 200mhz and /proc/cpuinfo also says 200mhz and I can't notice any
> slowdown.
>
> --
> Jorge Nerin
> <[EMAIL PROTECTED]>
> -
> Linux SMP list: FIRST see FAQ at http://www.irisa.fr/prive/dmentre/smp-howto/
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>
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