CFS quotas only become active under contention and even then are relative: if you’re the only thing running on the box and want all the cores but only set one cpu, you get all of them anyway.

If you set cpus to 2 and another process sets to 1 and you both try to use all CPUs all out, you’ll get 66% and they’ll get 33%.

This isn’t the same as cpusets, which work differently.