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Re: [PATCH 1/1] x86/cqm: Cqm requirements

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Stephane,

On Tue, 7 Mar 2017, Stephane Eranian wrote:
> On Tue, Mar 7, 2017 at 12:04 PM, Luck, Tony <tony.luck@intel.com> wrote:
> >> That's all nice and good, but I still have no coherent explanation why
> >> measuring across allocation domains makes sense.
> >
> > Is this in reaction to this one?
> >
> >>> 5)      Put multiple threads into a single measurement group
> >
> > If we fix it to say "threads from the same CAT group" does it fix things?
> >
> Inside a CAT partition, there may be multiple tasks split into different
> cgroups.  We need the ability to monitor groups of tasks individually
> within that CAT partition. I think this is what this bullet is about.

I completely understand that. That's fine and I never debated that one, but
the requirements list is too vague about what you want to measure.

> >>> 5)      Put multiple threads into a single measurement group

That can be:

     A) threads within a CAT group

     B) threads which belong to different CAT groups

A) is fine. B) does not make any sense to me

Same applies for per CPU measurements.

Thanks,

	tglx

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RE: [PATCH 1/1] x86/cqm: Cqm requirements "Luck, Tony" <tony.luck@intel.com> - 2017-03-07 21:10 +0100
  RE: [PATCH 1/1] x86/cqm: Cqm requirements Thomas Gleixner <tglx@linutronix.de> - 2017-03-07 21:50 +0100
  Re: [PATCH 1/1] x86/cqm: Cqm requirements Stephane Eranian <eranian@google.com> - 2017-03-08 00:30 +0100
    Re: [PATCH 1/1] x86/cqm: Cqm requirements Shivappa Vikas <vikas.shivappa@intel.com> - 2017-03-08 01:20 +0100
    Re: [PATCH 1/1] x86/cqm: Cqm requirements Thomas Gleixner <tglx@linutronix.de> - 2017-03-08 10:50 +0100
      Re: [PATCH 1/1] x86/cqm: Cqm requirements David Carrillo-Cisneros <davidcc@google.com> - 2017-03-08 19:00 +0100
        Re: [PATCH 1/1] x86/cqm: Cqm requirements Thomas Gleixner <tglx@linutronix.de> - 2017-03-09 12:10 +0100
          Re: [PATCH 1/1] x86/cqm: Cqm requirements David Carrillo-Cisneros <davidcc@google.com> - 2017-03-09 19:10 +0100
            Re: [PATCH 1/1] x86/cqm: Cqm requirements Thomas Gleixner <tglx@linutronix.de> - 2017-03-10 16:00 +0100
              Re: [PATCH 1/1] x86/cqm: Cqm requirements David Carrillo-Cisneros <davidcc@google.com> - 2017-03-11 03:00 +0100
                Re: [PATCH 1/1] x86/cqm: Cqm requirements Thomas Gleixner <tglx@linutronix.de> - 2017-03-13 20:20 +0100
                Re: [PATCH 1/1] x86/cqm: Cqm requirements David Carrillo-Cisneros <davidcc@google.com> - 2017-03-13 21:10 +0100
                Re: [PATCH 1/1] x86/cqm: Cqm requirements Thomas Gleixner <tglx@linutronix.de> - 2017-03-13 21:30 +0100

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