Messages in this thread | | | Date | Fri, 26 Oct 2018 10:42:55 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2] sched/core: Don't mix isolcpus and housekeeping CPUs |
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On Thu, Oct 25, 2018 at 11:53:17PM +0530, Srikar Dronamraju wrote: > > > > You can create multiple partitions with cpusets but still have an > > unbound task in the root cgroup. That would suffer the exact same > > problems. > > > > I probably don't understand this. Even if the child cgroups has > cpu_exclusive or sched_load_balance reset, the tasks in root cgroup has > access to all cpus in system. Right?
The crucial word being 'access'. The root group will not impose a limit on the affinity of tasks. So you can indeed have affinities that span load balancing domains.
And yes, that leads to 'interesting' but specified behaviour.
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