Re: [patch] Real-Time Preemption, -RT-2.6.10-rc3-mm1-V0.7.33-0

From: Ingo Molnar
Date: Tue Dec 14 2004 - 16:58:09 EST



* Lee Revell <rlrevell@xxxxxxxxxxx> wrote:

> On Tue, 2004-12-14 at 22:18 +0100, Ingo Molnar wrote:
> > i've been thinking about it on and off. If you would/could try it that
> > would certainly help. RT for Linux is a dance of many small steps.
> >
> > the two projects are obviously complementary and i have no intention to
> > reinvent the wheel in any way. Best would be to bring hires timers up to
> > upstream-mergable state (independently of the -RT patch) and ask Andrew
> > to include it in -mm, then i'd port -RT to it automatically.
>
> OK, I'll give this a shot. It would certainly help on my underpowered
> EPIA system, where my tests show 2.1% residency for the timer ISR with
> HZ=1000. On a system like this I would expect the difference to be
> perceptible with a regular desktop workload.

a warning: it's probably quite complex merging work - while the two
projects work on different conceptual issues, they touch the same code.

Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/