Re: [PATCH] Dynamic tick for x86 version 050610-1

hugang
2005-07-19T06:52:21Z

On Sat, Jun 18, 2005 at 04:30:32PM +1000, Benjamin Herrenschmidt wrote:
>
> > I'm try to port it powerpc, Here is a patch.
> >
> > Port Dynamic Tick Timer to new platform is easy. :)
> > 1) Find the reprogram timer interface.
> > 2) do a hook in the idle function.
> >
> > That worked on my PowerBookG4 12'.
>
> Did you get a measurable gain on power consumption ?
>
> Last time I toyed with this, I didn't.

Today I do a measurable about it.

First I using 2.6.12 without dynamic enable and unplug the AC power,
I check the /proc/pmu/battery_0, like this.
--
flags : 00000011
charge : 907
max_charge : 2863
current : -987
voltage : 10950
time rem. : 3600
--
I only intresting with current, that show the system power load.

When I enable dynamic, The current can low at -900.

So, It works. :>

2.6.12 + suspend2 + ck3 + dynamic
http://soulinfo.com/~hugang/kernel/linux-2.6.12/

--
Hu Gang .-. Steve
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