What is avg_atom?

Question

linux

What is the value in the avg_atom line in the /proc/$PID/sched file, who can tell?

Answer 1

Code from kernel/sched/debug.c that calculates it:

avg_atom = p->se.sum_exec_runtime;
                if (nr_switches)
                        avg_atom = div64_ul(avg_atom, nr_switches);

Judging by the fact that here the total execution time is divided by the number of context switches, this is how long, on average, the process ran between context switches.