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List:       dragonfly-users
Subject:    Re: Tickless system?
From:       "Constantine A. Murenin" <mureninc () gmail ! com>
Date:       2007-10-10 3:26:19
Message-ID: f34ca13c0710092021r5e84287do639dfc192ccbf9b () mail ! gmail ! com
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On 09/10/2007, walt <wa1ter@myrealbox.com> wrote:
> Constantine A. Murenin wrote:
> > On 09/10/2007, Matthew Dillon <dillon@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.



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