Messages in this thread | | | Date | Tue, 7 Mar 2017 15:31:49 -0800 (PST) | From | Shivappa Vikas <> | Subject | Re: [PATCH 1/1] x86/cqm: Cqm requirements |
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On Tue, 7 Mar 2017, Stephane Eranian wrote:
> Hi, > > 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. >
The #8 covers that I think (or what we intended for 5..) ?
8) Can get measurements for subsets of tasks in a CAT group (to find the threads hogging the resources).
Thanks, Vikas
> >> We'd like to have measurement groups use a single RMID ... if we >> allowed tasks from different CAT groups in the same measurement >> group we wouldn't be able to split the numbers back to report the >> right overall total for each of the CAT groups. >> >> -Tony >
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