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    SubjectRe: [PATCH 2/6] PM: Asynchronous resume of devices
    On Sat, 29 Aug 2009, Rafael J. Wysocki wrote:

    > I only wanted to say that the advantage is not really that "big". :-)
    > > I must agree, 14 threads isn't a lot. But at the moment that number is
    > > random, not under your control.
    > It's not directly controlled, but there are some interactions between the
    > async threads, the main threads and the async framework that don't allow this
    > number to grow too much.
    > IMO it sometimes is better to allow things to work themselves out, as long as
    > they don't explode, than to try to keep everything under strict control. YMMV.

    For testing purposes it would be nice to have a one-line summary for
    each device containing a thread ID, start timestamp, end timestamp, and
    elapsed time. With that information you could evaluate the amount of
    parallelism and determine where the bottlenecks are. It would give a
    much more detailed picture of the entire process than the total time of
    your recent patch 9.

    Alan Stern

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