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Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc3-mm1-V0.7.33-0
From: Lee Revell <rlrevell@joe-job.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>, LKML <linux-kernel@vger.kernel.org>,
       Rui Nuno Capela <rncbc@rncbc.org>,
       Mark Johnson <Mark_H_Johnson@RAYTHEON.COM>,
       "K.R. Foley" <kr@cybsft.com>, Bill Huey <bhuey@lnxw.com>,
       Adam Heath <doogie@debian.org>, Florian Schmidt <mista.tapas@gmx.net>,
       Thomas Gleixner <tglx@linutronix.de>,
       Fernando Pablo Lopez-Lezcano <nando@ccrma.Stanford.EDU>,
       George Anzinger <george@mvista.com>
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Date: Tue, 14 Dec 2004 16:47:58 -0500
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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.

Lee