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199

answers:

2
+3  Q: 

C linux equivalent of windows QueryPerformanceCounter

Is there an equivalent C function in linux for reading the CPU counter and its frequency?

I am looking for something similair to QueryPerformanceCounter function that reads the 64bit counter in modern CPU's

+1  A: 

The HAVEGE library uses the CPU counter. Check out its source code here. The relevant file is src/hardtick.h.

Marcelo Cantos  2010-04-17 07:11:41
A: 

clock_gettime(2), with an argument of CLOCK_REALTIME_HR.

Ignacio Vazquez-Abrams  2010-04-18 00:25:18

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