From: Karim Yaghmour <karim@opersys.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>,
Kristian Benoit <kbenoit@opersys.com>,
linux-kernel@vger.kernel.org, bhuey@lnxw.com, andrea@suse.de,
tglx@linutronix.de, pmarques@grupopie.com, bruce@andrew.cmu.edu,
nickpiggin@yahoo.com.au, ak@muc.de, sdietrich@mvista.com,
dwalker@mvista.com, hch@infradead.org, akpm@osdl.org,
Philippe Gerum <rpm@xenomai.org>
Subject: Re: PREEMPT_RT vs I-PIPE: the numbers, part 2
Date: Wed, 22 Jun 2005 19:02:35 -0400 [thread overview]
Message-ID: <42B9EE0B.80802@opersys.com> (raw)
In-Reply-To: <20050622224123.GA7658@elte.hu>
Ingo Molnar wrote:
> otherwise par_test_irq_handler will run with interrupts enabled, opening
> the window for other interrupts to be injected and increasing the
> worst-case latency! Take a look at drivers/char/lpptest.c how to do this
> properly. Also, double-check that there is no IRQ 7 thread running on
> the PREEMPT_RT kernel, to make sure you are measuring irq latencies.
We'll check on this also. Thanks for pointing it out.
Karim
--
Author, Speaker, Developer, Consultant
Pushing Embedded and Real-Time Linux Systems Beyond the Limits
http://www.opersys.com || karim@opersys.com || 1-866-677-4546
next prev parent reply other threads:[~2005-06-22 22:56 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 [this message]
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 ` PREEMPT_RT & threading IRQ 0 Ingo Molnar
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