Re: enabling aspm on ati radeon

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On 5/20/2013 4:01 PM, Rafael J. Wysocki wrote:
> I'm pretty sure it's measurable, at least in some cases.  Phoronix
> did quite some fuss about a commit that caused ASPM to not work any
> more on some systems some time ago, so he had to be able to measure
> it (and it was called a "major power regression").

That is why I was trying to get it enabled, but the "major regression"
seems to be caused by Radeons using the ASPM as a cue to enter low
power mode.  The energy saved by the bus itself going into the lower
power state I can't imagine is more than a few mW.


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