cgroup, RT cpu balance question

[Rolando Martins]

Hi,
I have one question regarding RT cpu balance using cgroup.

cgroup
echo 1 > cpuset.sched_load_balance

cgroup/2
echo 0 > cpuset.mems
echo 0-2 > cpuset.cpus
echo 450000 > cpu.rt_runtime_us

cgroup/3
echo 0 > cpuset.mems
echo 3 > cpuset.cpus
echo 450000 > cpu.rt_runtime_us


I have a small test that uses a loop to utilize 100% cpu (SCHED_FIFO).
When I run 2 tests on cgroup/3, it only uses bandwidth from cpu 3
(100%), the balancing isn't happening.
As I use the SCHED_FIFO, the 2 processes run sequentially.

Is this the expected behavior? Shouldn't the domains balance the spare
cpu bandwidth?

Thanks,
Rolando
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