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    SubjectRe: [ckrm-tech] Re: [PATCH 0/5] SUBCPUSETS: a resource control functionality using CPUSETS
    On Thu, 2005-09-08 at 18:44 +0530, Dinakar Guniguntala wrote:
    > Interesting implementation of resource controls. Cross posting this

    I second this :)

    Browsed a little through the docs/patches... seems to fit very well into
    a resource management solution (hint CKRM :) than CPUSET (resource

    I can see the usefulness of resource management inside CPUSET. We have
    had discussions earlier(in lkml and lse-tech) about how CKRM can play
    inside a CPUSET, and this plays directly into that, providing resource
    management inside a CPUSET.

    The parameters used, guarantee and limit, fits very well into CKRM's
    shares usage model.

    Takahiro-san, How much effort you think will be needed to make this work
    under CKRM. thanks.

    > to ckrm-tech as well. I am sure CKRM folks have something to say...
    > Any thoughts about how you want to add more resource control features
    > on top of/in addition to this setup. (Such as memory etc)
    > On Thu, Sep 08, 2005 at 12:23:23AM -0700, Paul Jackson wrote:
    > > I'm guessing you do not want such cpusets (the parents of subcpusets)
    > > to overlap, because if they did, it would seem to confuse the meaning
    > > of getting a fixed proportion of available cpu and memory resources. I
    > > was a little surprised not to see any additional checks that
    > > cpu_exclusive and mem_exclusive must be set true in these cpusets, to
    > > insure non- overlapping cpusets.
    > I agree with Paul here. You would want to build your controllers
    > on top of exclusive cpusets to keep things sane.
    > > On the other hand, Dinakar had more work to do than you might, because
    > > he needed a complete covering (so had to round up cpus in non exclusive
    > > cpusets to form more covering elements). From what I can tell, you
    > > don't need a complete covering - it seems fine if some cpus are not
    > > managed by this resource control function.
    > I think it makes more sense to add this functionality directly as part
    > of the existing cpusets instead of creating further leaf cpusets (or subcpusets
    > as you call it) where we can specify resource control parameters. I think that
    > approach would be much more intuitive and simple to work with rather than
    > what you have currently.
    > -Dinakar
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    Chandra Seetharaman | Be careful what you choose....
    - | may get it.

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