Re: How to get cpu utilization through code with least overhead?

[Raghu Udiyar <raghusiddarth@xxxxxxxxx>]

On Fri, Jul 29, 2011 at 5:26 AM, Vaibhav Jain <vjoss197@xxxxxxxxx> wrote:

Hi,

 

Is there any other way to do this? If I need to write a kernel module that needs to get cpu utilization 

should I still use proc/stat ? Is there a kernel function that can be used in a module ?

 

Thanks

Vaibhav Jain 

 

The kernel writes all cpu metrics and more to /proc/stat. I/O data goes 
to /proc/diskstat and memory to /proc/vmstat.  Top and other tools 
interpret the counters written to these files.


You can also look at hardware performance counters, as used by the perf utility.

--
Raghu S Udiyar

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