Using the C programming language, what is the best way to make a multicore RedHat Linux processor, use only one core in a test application?

Question

Using the C programming language, what is the best way to make a multicore Red Hat Linux processor, use only one core in a test application?

score 7 · Accepted Answer · edited May 23 '17 at 11:56

7

There is a Linux system call specifically for this purpose called sched_setaffinity

For example, to run on CPU 0:

#include <sched.h>
int main(void)
{
    cpu_set_t  mask;
    CPU_ZERO(&mask);
    CPU_SET(0, &mask);
    result = sched_setaffinity(0, sizeof(mask), &mask);
    return 0;
}

edited May 23 '17 at 11:56

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answered Sep 18 '13 at 11:15

Gearoid Murphy

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@Gearoid Murphy, Thank you for your answer. I will test it one hour and award you one Stack Overflow point and aceept your answer. – Frank Sep 18 '13 at 11:24
1

Note: `int main(void)` – wildplasser Sep 18 '13 at 11:37

Using the C programming language, what is the best way to make a multicore RedHat Linux processor, use only one core in a test application?

1 Answers1