Messages in this thread | | | Date | Sat, 19 Dec 2009 22:59:06 -0500 (EST) | From | Alan Stern <> | Subject | Re: Async suspend-resume patch w/ completions (was: Re: Async suspend-resume patch w/ rwsems) |
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On Sun, 20 Dec 2009, Rafael J. Wysocki wrote:
> So, seriously, do you think it makes sense to do asynchronous suspend at all? > I'm asking, because we're likely to get into troubles like this during suspend > for other kinds of devices too and without resolving them we won't get any > significant speedup from asynchronous suspend. > > That said, to me it's definitely worth doing asynchronous resume with the > "start asynch threads upfront" modification, as the results of the tests show > that quite clearly. I hope you agree.
It's too early to come to this sort of conclusion (i.e., that suspend and resume react very differently to an asynchronous approach). Unless you have some definite _reason_ for thinking that resume will benefit more than suspend, you shouldn't try to generalize so much from tests on only two systems.
Alan Stern
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