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    SubjectRe: [PATCH 00/10] mm: Linux VM Infrastructure to support Memory Power Management
    On Fri, Jun 10, 2011 at 08:11:21AM -0700, Paul E. McKenney wrote:

    > Of course, on a server, you could get similar results by having a very
    > large amount of memory (say 256GB) and a workload that needed all the
    > memory only occasionally for short periods, but could get by with much
    > less (say 8GB) the rest of the time. I have no idea whether or not
    > anyone actually has such a system.

    For the server case, the low hanging fruit would seem to be
    finer-grained self-refresh. At best we seem to be able to do that on a
    per-CPU socket basis right now. The difference between active and
    self-refresh would seem to be much larger than the difference between
    self-refresh and powered down.

    --
    Matthew Garrett | mjg59@srcf.ucam.org


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