Who and where is settled affinity mask per process?

Question

I have a process, shell. It's affinity mask is 1 (I have 3 CPUs) On redundant machine (almost mirror - it is 7 - ALL CPUs) Who is deciding which mask to set or where it is configured?

[root@h1-nms ~]# ps $$
  PID TTY      STAT   TIME COMMAND
 7605 pts/2    Ss     0:00 -bash
[root@h1-nms ~]# taskset -p $$
pid 7605's current affinity mask: 1

with `- p`. `-s` give error (`pstree: invalid option -- 's'`) — ALZ, Mar 02 '18 at 16:41

score 0 · Accepted Answer · answered Mar 05 '18 at 17:35

0

I found that on a specific machine affinity was managed by Cgroups (https://en.wikipedia.org/wiki/Cgroups)

answered Mar 05 '18 at 17:35

ALZ

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Who and where is settled affinity mask per process?

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