CPU affinity and scheduler

Leandro Bucci guestleandro11 at gmail.com
Sat Jan 2 11:38:37 CET 2021


Hello and happy new year to all. I wanted to ask you in detail what this
line means:

isolcpus=0,1 xenomai.supported_cpus=0x3

I understand that 2 CPUs are isolated. (I'm working on a Raspberry). But in
what sense are they isolated? does it mean that if a xenomai Task runs on
one of the two CPUs it will never migrate to another CPU? instead what does
"xenomai supported CPU" mean? that only that CPU supports Xenomai? but then
why is CPU 3 not isolated?


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