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Old 07-01-2004, 02:51 AM   #1
LQ Newbie
Registered: Mar 2004
Location: Belgium- lebbeke
Distribution: mandrake 10
Posts: 29

Rep: Reputation: 15
how can I run my centrino cpu on max speed ?


I have Suse 9.1 running on my laptop
* IBM T41
* centrino cpu 1600MHz
* 512 Mb RAM memory
* combi DVD/ CD-R
* ......

My question is if I do cat /proc/cpuinfo then I see that the speed not 1600 but 500 MHz how it comes ? and what I must do to set it in max speed?


jherrera@linux:/proc> cat cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 9
model name : Intel(R) Pentium(R) M processor 1600MHz
stepping : 5
cpu MHz : 598.184
cache size : 1024 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 mce cx8 sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 tm pbe tm2 est
bogomips : 1182.72

Thanks and regards,

Old 07-04-2004, 01:51 AM   #2
Registered: Aug 2003
Location: Arkansas
Distribution: Slackware 12.2
Posts: 104

Rep: Reputation: 15
Th laptop I use (not mine, my bosses) is not a centrino, but does have the "speedstep" capability. I know that there is a setting in the bios do disable that functionality (and I do) although it is reset when I log back into the network at the office, I suppose by a script that the net heads have execute at each logon.
Old 07-17-2004, 04:35 AM   #3
LQ Newbie
Registered: Mar 2004
Location: Belgium- lebbeke
Distribution: mandrake 10
Posts: 29

Original Poster
Rep: Reputation: 15
thanks, but I can't change it on mine ! the setting is allready ready set to max speed ?

but when i check /proc/ then I see this :
jherrera@linux:/proc> cat cpufreq
minimum CPU frequency - maximum CPU frequency - policy
CPU 0 600000 kHz ( 37 %) - 1600000 kHz (100 %) - userspace

what's means this ?

where can i set it that linux use 100% ?

Old 07-17-2004, 03:37 PM   #4
LQ Guru
Registered: Jan 2002
Posts: 6,042

Rep: Reputation: Disabled
As root you can echo a value to the proc. For an example, type

echo "0:1600000:1600000:powersave" >/proc/cpufreq

I got the information from


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