[squeak-dev] Cog and Batteries?

Bert Freudenberg bert at freudenbergs.de
Tue Jun 22 21:23:11 UTC 2010

On 22.06.2010, at 23:15, Casey Ransberger wrote:

> I have a perhaps naive question: what's the expected impact of the JIT on battery life? Seems like the extra number crunching might have an impact. Regardless of whether or not people want us generating native code on mobile devices, does it generally make more sense to use the stack VM on mobile devices?

The key to good battery live is to run as fast as possible for the shortest amount of time possible, then go back to sleep. So yes, Cog would help for battery IMHO - unless it seduces you to also do more.

> FWIW, I think 10-15% better performance is still a f@(&!?g big deal on dog slow devices! Oh, this stuff just makes my whole year fantastic.
> Of course, the question may be a bit premature since we don't have a JIT for ARM yet:)

Would be awesome if someone would tackle that.

- Bert -

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