I couldn't find what is the meaning of the
/N below in the
rcuos/1 migration/1 kworder/1:0H
What do those numbers mean?
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It depends on the process. The
/… is part of the process name, as can be seen from
$ pgrep kworker -a | head 5 kworker/0:0H 16 kworker/1:0H 21 kworker/2:0H 26 kworker/3:0H 31 kworker/4:0H 36 kworker/5:0H 41 kworker/6:0H 46 kworker/7:0H 165 kworker/0:1H
kworker processes, the answer is in this Unix & Linux post:
According to kernel.org, the syntax is
kworker/%u:%d%s (cpu, id, priority). The
udesignates a special CPU, the unbound cpu, meaning that the kthread is currently unbound.
The workqueue workers which have negative nice value have 'H' postfixed to their names. (source)