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Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource group and PRIO_RGRP

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On Sat, 2016-03-12 at 07:26 +0100, Mike Galbraith wrote:
> On Fri, 2016-03-11 at 10:41 -0500, Tejun Heo wrote:
> > Hello,
> > 
> > This patchset extends cgroup v2 to support rgroup (resource group) for
> > in-process hierarchical resource control and implements PRIO_RGRP for
> > setpriority(2) on top to allow in-process hierarchical CPU cycle
> > control in a seamless way.
> > 
> > cgroup v1 allowed putting threads of a process in different cgroups
> > which enabled ad-hoc in-process resource control of some resources.

BTW, within the scheduler, "process" does not exist.  A high level
composite entity is what we currently aggregate from arbitrary
individual entities, a.k.a threads.  Whether an individual entity be an
un-threaded "process" bash, a thread of "process" oracle, or one of
"process!?!" kernel is irrelevant.  What entity aggregation has to do
with "process" eludes me completely.

What's ad-hoc or unusual about a thread pool servicing an arbitrary
number of customers using cgroup bean accounting?  Job arrives from
customer, worker is dispatched to customer workshop (cgroup), it does
whatever on behest of customer, sends bean count off to the billing
department, and returns to the break room.  What's so annoying about
using bean counters for.. counting beans that you want to forbid it?

	-Mike

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[PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource group and PRIO_RGRP Tejun Heo <tj@kernel.org> - 2016-03-11 16:50 +0100
  [PATCH 03/10] cgroup: introduce CGRP_MIGRATE_* flags Tejun Heo <tj@kernel.org> - 2016-03-11 16:50 +0100
  [PATCH 04/10] signal: make put_signal_struct() public Tejun Heo <tj@kernel.org> - 2016-03-11 16:50 +0100
  [PATCH 10/10] cgroup, sched: implement PRIO_RGRP for {set|get}priority() Tejun Heo <tj@kernel.org> - 2016-03-11 16:50 +0100
  [PATCH 08/10] cgroup: implement rgroup control mask handling Tejun Heo <tj@kernel.org> - 2016-03-11 16:50 +0100
  Example program for PRIO_RGRP Tejun Heo <tj@kernel.org> - 2016-03-11 17:10 +0100
  Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource  group and PRIO_RGRP Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-03-12 07:30 +0100
    Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource  group and PRIO_RGRP Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-03-12 18:10 +0100
      cgroup NAKs ignored? Re: [PATCHSET RFC cgroup/for-4.6] cgroup,  sched: implement resource group and PRIO_RGRP Ingo Molnar <mingo@kernel.org> - 2016-03-12 18:20 +0100
        Re: cgroup NAKs ignored? Re: [PATCHSET RFC cgroup/for-4.6] cgroup,  sched: implement resource group and PRIO_RGRP Tejun Heo <tj@kernel.org> - 2016-03-13 15:50 +0100
    Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource  group and PRIO_RGRP Tejun Heo <tj@kernel.org> - 2016-03-13 16:10 +0100
      Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource  group and PRIO_RGRP Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-03-13 18:50 +0100
      Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource  group and PRIO_RGRP Mike Galbraith <umgwanakikbuti@gmail.com> - 2016-03-14 03:30 +0100
  Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource  group and PRIO_RGRP Peter Zijlstra <peterz@infradead.org> - 2016-03-14 12:40 +0100
  Re: [PATCHSET RFC cgroup/for-4.6] cgroup, sched: implement resource  group and PRIO_RGRP Michal Hocko <mhocko@kernel.org> - 2016-03-15 18:30 +0100

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