Re: 2.6.19 -mm merge plans

Ingo Molnar
2006-09-22T19:09:43Z

* Pavel Machek <pavel@suse.cz> wrote:

> > would be nice to merge the -hrt queue that goes right ontop this
> > queue. Even if HIGH_RES_TIMERS is "default n" in the beginning. That
> > gives us high-res timers and dynticks which are both very important
> > features to certain classes of users/devices.
>
> dynticks give benefit of 0.3W, or 20minutes (IIRC) from 8hours on
> thinkpad x60... and they were around for way too long. (When baseline
> is hz=250, it is 0.5W from hz=1000 baseline). It would be cool to
> finally merge them.

note that this is a new implementation of dynticks though, not Con's
older stuff which you probably used, right? But it's fairly low-impact
(just a few lines ontop of hrtimers, here and there), ontop of the
long-existing -hrt queue.

Ingo