RDTSC use in C: Post: 302323492

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Top Forums Programming RDTSC use in C: Post 302323492 by Sivaraman on Monday 8th of June 2009 04:51:14 AM

06-08-2009

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Finding CPU speed while CPU is in Throttling

Hi ,

I am trying to find out the Speed of the CPU while it is in 87.5 % Throttling. I am using RDTSC to get the Frequency of the Processor. Its reporting as 15 GHz while it is running in the lowest Speed. I need to validate whether CPU is running in the specified speed while it is in Throttling. As Calv notified i cannot use RDTSC, what could be the better way of doing. could you please any one help me.

Thanks
Siva

Sivaraman

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LEARN ABOUT DEBIAN

cpufreqd-get

cpufreqd-get(1) 														   cpufreqd-get(1)

NAME

       cpufreqd-get - Issues "get" commands to cpufreqd.

SYNTAX

       cpufreqd-get [-l]

PARAMETERS

       -l     list applied Profiles for all cpus.

DESCRIPTION

       cpufreqd-get  issues  a command to cpufreqd and reads the returned output.  When run without arguments it will issue a "LIST_PROFILES" com-
       mand, useful for usage with cpufreqd-set. See the PARAMETERS above for more.

COMMANDS

       LIST_PROFILES

       cpufreqd-get
       Name (#1):     On Demand High
       Active on CPU#:	   0, 1
       Governor: ondemand
       Min freq: 1000000
       Max freq: 1833000

       Name (#2):     On Demand Low
       Governor: ondemand
       Min freq: 1000000
       Max freq: 1333000

       LIST_APPLIED_PROFILES

       cpufreqd-get -l
       CPU#0: "High Speed 1" ondemand 731500-997500

       Near the name (between the parenthesis) you can find the index number to use when setting a specific profile with cpufreqd-set.

AUTHORS

       Mattia Dongili <malattia@linux.it>

SEE ALSO

       cpufreqd-set(1), cpufreqd(8), cpufreqd.conf(5)

Mattia Dongili							       2.2.0							   cpufreqd-get(1)