From: Muli Ben-Yehuda (mulix_at_nonexisting.hamakor.org.il)
Date: Tue 20 Jan 2004 - 11:20:39 IST
On Tue, Jan 20, 2004 at 10:46:21AM +0200, Lior Okman wrote:
> I recently bought a new laptop, and after I installed Linux on it, I
> noticed a strange inconsistency with the cpu.
> The CPU is supposed to be a Pentium 4 2.66Ghz, but Linux identifies it
> as a Pentium 4 2.66 GHz that operates at 1.6GHz:
> model name : Genuine Intel(R) CPU 2.66GHz
This string comes directly from the CPU, most likely. Linux just
prints it.
> stepping : 9
> cpu MHz : 1594.431 <------------
This is what Linux calculated the CPU's frequency as.
> Is this normal? Some kind of frequency scaling thing in order to save
> power?
That is one of the possible solutions (and the most likely
one). Although why the laptop wouldn't work in "full capaity" when
connected to the electricity is a mystery. Do you have cpufrequency
options in the bios? a cpufrequency script that modifies the CPU's
power consumption? please post (or send me in private) the full dmesg
output.
> The results I got above were made while the laptop was connected
> to the electricity. This is also consistent across different kernel
> versions. I tries 2.4.23 and 2.6.0 and 2.6.1 and got exactly the same
> results each time.
The other possible solutions are that the model name is wrong (meaning
it claims 2.66, but the CPU actually does 1.66), and that there's a
bug in Linux.
Hope this helps,
Muli
-- Muli Ben-Yehuda http://www.mulix.org | http://mulix.livejournal.com/ "the nucleus of linux oscillates my world" - gccbot@#offtopic
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