Tickless system?

[Constantine A. Murenin]

On 09/10/2007, walt <wa1ter at myrealbox.com> wrote:
> Constantine A. Murenin wrote:
> > On 09/10/2007, Matthew Dillon <dillon at apollo.backplane.com> wrote:
> >>     ...
> >>     The real issue here is probably cutting down on timer events when a
> >>     system is idle - almost certainly to improve the efficiency of
> >>     virtualized systems...
>
> > It might be useful for power consumption purposes, too.
> >
> > For example, on my Core 2 Duo Allendale box, default FreeBSD
> > 7.0-CURRENT consumes about 2W more power in the idle loop than
> > DragonFly BSD or OpenBSD due to the increased number of clock
> > interrupts that it processes...
>
> Interesting point, thanks.  How do you measure power consumption?

I use a device called Kill A Watt:

http://www.newegg.com/Product/Product.aspx?Item=N82E16882715001

C.