From: Ingo Molnar <mingo@elte.hu>
To: Lee Revell <rlrevell@joe-job.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: PREEMPT_RT & threading IRQ 0
Date: Wed, 29 Jun 2005 09:43:39 +0200 [thread overview]
Message-ID: <20050629074339.GA19129@elte.hu> (raw)
In-Reply-To: <1119460661.491.31.camel@mindpipe>
* Lee Revell <rlrevell@joe-job.com> wrote:
> Ingo, what's the status of putting irq 0 back in a thread with
> PREEMPT_RT? IIRC this had some adverse (maybe unfixable?) effects so
> it was disabled a few months ago.
the jury is still out on that one - but right now it seems it's too much
complexity for a handful of usecs of latency improvement. Especially
with things like high-resolution timer support, the threading IRQ0
doesnt seem to be worth it.
Ingo
prev parent reply other threads:[~2005-06-29 7:47 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-20 17:13 PREEMPT_RT vs I-PIPE: the numbers, part 2 Kristian Benoit
2005-06-20 18:31 ` Bill Huey
2005-06-22 16:00 ` Karim Yaghmour
2005-06-22 19:29 ` Bill Huey
2005-06-22 20:05 ` Ingo Molnar
2005-06-22 20:39 ` Karim Yaghmour
2005-06-22 22:04 ` Ingo Molnar
2005-06-22 23:03 ` Lee Revell
2005-06-22 23:52 ` Karim Yaghmour
2005-06-22 23:38 ` Karim Yaghmour
2005-06-22 23:57 ` Andrea Arcangeli
2005-06-23 0:05 ` Daniel Walker
2005-06-23 0:48 ` Karim Yaghmour
2005-06-23 0:06 ` Ingo Molnar
2005-06-23 0:47 ` Karim Yaghmour
2005-06-23 0:55 ` Bill Huey
2005-06-23 1:09 ` Karim Yaghmour
2005-06-23 1:15 ` Bill Huey
2005-06-23 1:47 ` Karim Yaghmour
2005-06-23 0:59 ` David Lang
2005-06-23 1:22 ` Karim Yaghmour
2005-06-23 1:42 ` David Lang
2005-06-23 2:09 ` Karim Yaghmour
2005-06-23 2:15 ` David Lang
2005-06-23 1:34 ` Ingo Molnar
2005-06-23 2:02 ` Karim Yaghmour
2005-06-23 3:57 ` Lee Revell
2005-06-23 4:13 ` Karim Yaghmour
2005-06-22 20:10 ` Karim Yaghmour
2005-06-22 20:15 ` Bill Huey
2005-06-21 1:55 ` Paul E. McKenney
2005-06-21 2:29 ` Karim Yaghmour
2005-06-22 1:19 ` Paul E. McKenney
2005-06-22 15:31 ` Karim Yaghmour
2005-06-22 15:27 ` Kristian Benoit
2005-06-22 16:27 ` Paul E. McKenney
2005-06-22 17:20 ` Kristian Benoit
2005-06-22 17:34 ` Ingo Molnar
2005-06-22 17:40 ` Ingo Molnar
2005-06-22 18:12 ` Karim Yaghmour
2005-06-22 18:14 ` Ingo Molnar
2005-06-22 19:04 ` Karim Yaghmour
2005-06-22 18:50 ` Paul E. McKenney
2005-06-22 19:04 ` Ingo Molnar
2005-06-22 20:17 ` Karim Yaghmour
2005-06-22 20:22 ` Ingo Molnar
2005-06-22 21:03 ` Karim Yaghmour
2005-06-22 21:10 ` Ingo Molnar
2005-06-22 21:32 ` Karim Yaghmour
2005-06-22 22:41 ` Ingo Molnar
2005-06-22 23:02 ` Karim Yaghmour
2005-06-22 21:20 ` Paul E. McKenney
2005-06-22 19:08 ` Karim Yaghmour
2005-06-23 14:48 ` Paulo Marques
2005-06-22 17:58 ` Karim Yaghmour
2005-06-22 18:47 ` Paul E. McKenney
2005-06-22 19:16 ` Karim Yaghmour
2005-06-22 21:23 ` Paul E. McKenney
2005-06-22 17:17 ` Lee Revell
2005-06-22 17:32 ` Karim Yaghmour
2005-06-29 7:43 ` Ingo Molnar [this message]
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