measuring cpu frequency

From: Ivan Fernandez (ivan.fernandez_at_vanderbilt.edu)
Date: 04/30/04

  • Next message: Alexander Nordström: "Re: Font problems" 
    Date: Fri, 30 Apr 2004 16:48:24 GMT
To: debian-user@lists.debian.org

    OK, I've been trying to set up cpu frequency scaling in my Dell Inspiron
    5150 (3.06GHz Mobile Pentium 4, debian testing and 2.6.5 kernel). I
    seem to have everything in place, cpu frequency scaling compiled into
    the kernel, together with performance and powersave governors, userspace
    governor as default, frequency tables helpers too, and the p4-clockmod
    module as driver. All the relevant files show up under
    /sys/devices/system/cpu/cpu0/cpufreq/ and the userspace daemon I use to
    switch frequencies (powernowd) loads and apparently changes frequencies
    alright.

    My problem is that I can notice no cooling at all, CPU temperature is
    around 70C most of the time, just as the same as before enabling the
    whole cpufreq thing. I don't know how to measure real frequency:
    the numbers that show on /proc/cpuinfo match with
    /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed, but x86info -mhz
    (which reads from /dev/cpu/0/cpuid, I believe, shows a different clock
    speed (higher, either around 1500 MHz or, most of the time, the full
    3.06 GHz). Which one should I trust? Is there any other way to measure
    cpu speed accurately?

    Thanks 

    -- 
Ivan Fernández
ivan.fernandez@vanderbilt.edu
-- 
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org 
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
  • Next message: Alexander Nordström: "Re: Font problems"