Linked by Kroc Camen on Thu 30th Sep 2010 12:12 UTC
Talk, Rumors, X Versus Y "I am truly shocked that so many people are being duped by BlackBerry's recent announcement of their tablet, the PlayBook. I have read endless comments from people who are saying they can't wait to get this tablet computer. Well, I think I have some bad news for you folks. There is no evidence that the PlayBook exist as advertised. Why do I say this? I will make it brief..."
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RE[5]: Have to agree
by Neolander on Thu 30th Sep 2010 21:44 UTC in reply to "RE[4]: Have to agree"
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Actually, proper scheduling can make devices more power-efficient.

As an example, usual round robin algorithms run software whenever it can run, keeping the processor busy and energy-hungry as long as one task is active and it's not put in a sleep state.

A power-efficient scheduling algorithm could swap out some tasks under certain conditions, so that the processor can be put to rest more often. E.g. pausing a game when it's put in the background in order to read some mail won't hurt its functionality the tiniest bit, and CPU use during the time spent reading the mail will drop from 100% (game running in the background) to a few % (scrolling text from time to time).

Defining which tasks are swapped out can be the role of a high-level API, but as you see the ability to swap a task out and stop scheduling it must first be provided at a low level.

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