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Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service management

From Tejun Heo <tj@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service management
Date 2015-08-04 21:10 +0200
Message-ID <pTPL4-2Fi-19@gated-at.bofh.it> (permalink)
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Hello, Vikas.

On Tue, Aug 04, 2015 at 11:50:16AM -0700, Vikas Shivappa wrote:
> I will make this more clear in the documentation - We intend this cgroup
> interface to be used by a root or superuser - more like a system
> administrator being able to control the allocation of the threads , the one
> who has the knowledge of the usage and being able to decide.

I get that this would be an easier "bolt-on" solution but isn't a good
solution by itself in the long term.  As I wrote multiple times
before, this is a really bad programmable interface.  Unless you're
sure that this doesn't have to be programmable for threads of an
individual applications, this is a pretty bad interface by itself.

> There is already a lot of such usage among different enterprise users at
> Intel/google/cisco etc who have been testing the patches posted to lkml and
> academically there is plenty of usage as well.

I mean, that's the tool you gave them.  Of course they'd be using it
but I suspect most of them would do fine with a programmable interface
too.  Again, please think of cpu affinity.

Thanks.

-- 
tejun
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Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Tejun Heo <tj@kernel.org> - 2015-07-30 21:50 +0200
  Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Marcelo Tosatti <mtosatti@redhat.com> - 2015-07-31 17:20 +0200
    Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Tejun Heo <tj@kernel.org> - 2015-08-02 18:30 +0200
      Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Marcelo Tosatti <mtosatti@redhat.com> - 2015-08-04 00:50 +0200
        Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Marcelo Tosatti <mtosatti@redhat.com> - 2015-08-04 15:00 +0200
          Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Tejun Heo <tj@kernel.org> - 2015-08-04 20:40 +0200
        Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Tejun Heo <tj@kernel.org> - 2015-08-04 20:40 +0200
  Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Vikas Shivappa <vikas.shivappa@intel.com> - 2015-07-31 18:30 +0200
    Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Tejun Heo <tj@kernel.org> - 2015-08-02 18:40 +0200
      Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Vikas Shivappa <vikas.shivappa@intel.com> - 2015-08-04 21:00 +0200
        Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Tejun Heo <tj@kernel.org> - 2015-08-04 21:10 +0200
          Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Vikas Shivappa <vikas.shivappa@intel.com> - 2015-08-05 04:30 +0200
            Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Tejun Heo <tj@kernel.org> - 2015-08-05 17:50 +0200
              Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Vikas Shivappa <vikas.shivappa@intel.com> - 2015-08-06 23:00 +0200
                Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Tejun Heo <tj@kernel.org> - 2015-08-07 16:50 +0200
      Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Matt Fleming <matt@codeblueprint.co.uk> - 2015-08-05 14:30 +0200
        Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Tejun Heo <tj@kernel.org> - 2015-08-05 18:20 +0200
        Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Marcelo Tosatti <mtosatti@redhat.com> - 2015-08-06 02:30 +0200
          Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Vikas Shivappa <vikas.shivappa@intel.com> - 2015-08-06 22:50 +0200
            Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Marcelo Tosatti <mtosatti@redhat.com> - 2015-08-07 15:20 +0200
              Re: [PATCH 5/9] x86/intel_rdt: Add new cgroup and Class of service  management Marcelo Tosatti <mtosatti@redhat.com> - 2015-08-18 02:30 +0200

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