Messages in this thread | | | Date | Thu, 19 Jul 2018 15:52:24 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v11 7/9] cpuset: Expose cpus.effective and mems.effective on cgroup v2 root |
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On Tue, Jul 03, 2018 at 08:58:23AM -0700, Tejun Heo wrote: > Hello, Waiman. > > On Tue, Jul 03, 2018 at 08:41:31AM +0800, Waiman Long wrote: > > > So, effective changing when enabling partition on a child feels wrong > > > to me. It's supposed to contain what's actually allowed to the cgroup > > > from its parent and that shouldn't change regardless of how those > > > resources are used. It's still given to the cgroup from its parent. > > > > Another way to work around this issue is to expose the reserved_cpus in > > the parent for holding CPUs that can taken by a chid partition. That > > will require adding one more cpuset file for those cgroups that are > > partition roots. > > Yeah, that should work. > > > I don't mind restricting that to the first level children for now. That > > does restrict where we can put the container root if we want a separate > > partition for a container. Let's hear if others have any objection about > > that. > > As currently implemented, partioning locks away the cpus which should > be a system level decision, not container level, so it makes sense to > me that it is only available to system root.
I'm terribly confused, what?!
Why would a container not be allowed to create partitions for its various RT workloads?
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