idle detection

[Mark Doliner]

On Wed, 1 Aug 2007 21:21:32 -0700, Sean Egan wrote
> I think we should keep what we have now, polling as-needed when not
> idle and once every 3 seconds to ensure decent user-visible latency,
> and wait for whatever changes are needed for us to get a push model.

I agree that the power-saving difference between polling every 3 seconds verse
polling every 60 is probably insignificant, and I like 3 seconds (I'd be ok
with anything less than 10 (but if you set it to 11 I might die)).

-Mark