On 05/24/2012 08:25 PM, Srinivas Ramanan wrote:

Can someone give the  information of following typical values in 
Kernel 3.x
in a 2Ghz machine with sufficient RAM

Process creation time ?
Process context switch time ?
pthread creation time ?
pthread context swich  time ?
kernel thread creation time ?
kernel thread context swich  time ?

What is the best way to measure these values?
I wrote  a simple test for measuring kernel thread context switch
A simple test like

1. get_time(start)
2. schedule();
3. get_time(end)
4. print( context sw time = (end-start) )

But it doesnt seem to work correctly.

Thanks.
Ramanan





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Hi,

Check things supporting tracepoints like perf, systemtap and kprobe. 
They could help you a lot.

Regards,
LIU zhiyou
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