Use Linux system function alarm () to detect computer performance

As we all know, alarm () is the Linux system comes with the timing function, the operating system management process for each process assigned a timer, the following 1 seconds to see how much computer can count to determine the performance of the computer:

#include <stdio.h>

#include <unistd.h>

int main ()

{

int counter;

Alarm (1);

for (counter=0;1;counter++)

printf ("counter=%d", counter);

return 0;

}

My computer was 43889, try yours.

Use Linux system function alarm () to detect computer performance