Commands

Commands

Below is a quick list of some commands in LibHPD to get you started. It is highly recommended that you understand /proc/stat to a minimum degree before attempting to use these. You should also read the source files to get a better understanding of the commands.

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cpust

int cpust(int stat, int core)

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Returns the total clock ticks that a core has spent on a specific type of task. Set core=-1 to pull data from all cores. The first argument corresponds to a column on /proc/stat. Below is a quick reference:

stats:

1. user
2. nice
3. system
4. idle
5. iowait
6. irq
7. softirq
8. steal
9. guest
10. guest_nice

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Example:

int main() {
    int core7idletime = cpust(4,7);
    fprintf("This is the amount of clock cycles core 7 has spent idling: %s\n",core7idletime);
}