Cpufrequency requirements

Hi! I want to reduce my cpu speed in my laptop.. My cpu is a
processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 2
model name : Intel(R) Celeron(R) CPU 2.40GHz
stepping : 7
cpu MHz : 2389.555
cache size : 128 KB
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8
apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe cid
bogomips : 4718.59

I am running the 2.6.10 linux kernel. Plz tell me what parameters i should enable in the kernel for making cpufreq a nice experience to share

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Hi,

Intel Celerons don't support frequency scaling, but frequency throttling. All you can do is use the "p4-clockmod" driver, but it is of limited use in your case.

CONFIG_CPU_FREQ
CONFIG_CPU_FREQ_TABLE
CONFIG_X86_P4_CLOCKMOD

In your case, I'd use the performance governor and limit /sys/devices/system/cpu/cpu0/scaling_max_freq depening on system temeperature to avoid the fan being enabled/increased. There are userspace daemons out there which allow for doing so.

Dominik