On Tue, Apr 09, 2019 at 04:40:03PM -0400, Joel Savitz <jsavitz@xxxxxxxxxx> wrote: > $ grep Cpus /proc/$$/status > Cpus_allowed: ff > Cpus_allowed_list: 0-7 (a) > $ taskset -p 4 $$ > pid 19202's current affinity mask: f > pid 19202's new affinity mask: 4 > > $ grep Cpus /proc/self/status > Cpus_allowed: 04 > Cpus_allowed_list: 2 > > # echo off > /sys/devices/system/cpu/cpu2/online > $ grep Cpus /proc/$$/status > Cpus_allowed: 0b > Cpus_allowed_list: 0-1,3 I'm confused where this value comes from, I must be missing something. Joel, is the task in question put into a cpuset with 0xf CPUs only (at point (a))? Or are the CPUs 4-7 offlined as well? Thanks, Michal
