Re: [ANNOUNCE] VST (tick elimination) is now available

From: Pavel Machek
Date: Tue Oct 14 2003 - 06:03:19 EST


Hi!

> The first release of the VST package is now available. VST or
> Variable Scheduling Timeouts (or if you prefer, Variable Sleep Times)
> contains code that, from the idle task, scans the timer list and, if
> no timer is near, skips the timer interrupts that would otherwise be
> generated. The patch name is hrtimers-vst-*
>
> The net result is that a quite system will use far less power as it
> does not need to wake up ever 1/HZ timer tick.

Do you have some measurements of how much power does it save? Making
Sharp Zaurus run longer on batteries would certainly be nice ;-).
Pavel

--
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
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