From: Ingo Molnar <mingo@elte.hu>
To: Mark_H_Johnson@raytheon.com
Cc: Karsten Wiese <annabellesgarden@yahoo.de>,
Bill Huey <bhuey@lnxw.com>, Adam Heath <doogie@debian.org>,
"K.R. Foley" <kr@cybsft.com>,
linux-kernel@vger.kernel.org,
Florian Schmidt <mista.tapas@gmx.net>,
Fernando Pablo Lopez-Lezcano <nando@ccrma.Stanford.EDU>,
Lee Revell <rlrevell@joe-job.com>,
Rui Nuno Capela <rncbc@rncbc.org>,
Thomas Gleixner <tglx@linutronix.de>,
Michal Schmidt <xschmi00@stud.feec.vutbr.cz>
Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm2-V0.7.1
Date: Thu, 4 Nov 2004 17:17:56 +0100 [thread overview]
Message-ID: <20041104161756.GA2002@elte.hu> (raw)
In-Reply-To: <OFBDA242F0.2AF7EADB-ON86256F42.00585112-86256F42.0058514C@raytheon.com>
* Mark_H_Johnson@raytheon.com <Mark_H_Johnson@raytheon.com> wrote:
> >does the ping phenomenon go away if you chrt both the networking IRQ
> >thread and both ksoftirqd's to above the RT task's priority?
>
> For the most part, yes. I reran the test with -V0.7.7 and had
> continuous ping responses until the system locked up with yet another
> deadlock. This did NOT fix the display / mouse movement lockups. All
> IRQ and ksoftirqd tasks were RT 99 priority for this test. latencytest
> ran at RT 30 priority.
another method would be to set all smp_affinity values in /proc/irq/*/
to 1 (i.e. let CPU#0 handle all IRQs), and start latencytest on CPU#1,
via 'taskset'. In theory this should ensure that no hardirq workload
runs on CPU#1 and thus ksoftirqd would not be active there either. (with
the exception of kernel timers started on that CPU, by latencytest.)
Ingo
next prev parent reply other threads:[~2004-11-04 16:18 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-04 16:04 [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm2-V0.7.1 Mark_H_Johnson
2004-11-04 16:13 ` Ingo Molnar
2004-11-04 16:17 ` Ingo Molnar [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-11-04 19:39 Mark_H_Johnson
2004-11-04 19:52 ` Ingo Molnar
2004-11-04 17:52 Mark_H_Johnson
2004-11-04 16:53 Mark_H_Johnson
2004-11-04 16:22 Mark_H_Johnson
2004-11-04 16:30 ` Ingo Molnar
2004-11-04 16:32 ` Ingo Molnar
2004-11-04 18:59 ` john cooper
2004-11-04 19:44 ` Ingo Molnar
2004-11-04 23:25 ` john cooper
2004-11-05 21:42 ` Scott Wood
2004-11-05 22:36 ` Bill Huey
2004-11-08 14:35 ` Esben Nielsen
2004-11-08 15:42 ` Ingo Molnar
2004-11-08 22:47 ` Bill Huey
2004-11-06 7:42 ` Ingo Molnar
2004-11-04 15:02 Mark_H_Johnson
2004-11-04 15:16 ` Ingo Molnar
2004-11-04 15:19 ` Ingo Molnar
2004-11-03 20:40 Mark_H_Johnson
2004-11-03 18:24 Mark_H_Johnson
2004-10-18 14:50 [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U5 Ingo Molnar
2004-10-19 12:46 ` [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U6 Ingo Molnar
2004-10-19 18:00 ` [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U7 Ingo Molnar
2004-10-20 9:45 ` [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U8 Ingo Molnar
2004-10-21 13:27 ` [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U9 Ingo Molnar
2004-10-22 13:35 ` [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U9.3 Ingo Molnar
2004-10-22 15:50 ` [patch] Real-Time Preemption, -RT-2.6.9-mm1-U10 Ingo Molnar
2004-10-22 17:56 ` [patch] Real-Time Preemption, -RT-2.6.9-mm1-U10.2 Ingo Molnar
2004-10-25 10:40 ` [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0 Ingo Molnar
2004-10-27 0:15 ` [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.3 Ingo Molnar
2004-11-03 10:58 ` [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm2-V0.7.1 Ingo Molnar
2004-11-03 13:44 ` Lorenzo Allegrucci
2004-11-03 13:46 ` Ingo Molnar
2004-11-03 17:53 ` Lorenzo Allegrucci
2004-11-03 20:41 ` Lorenzo Allegrucci
2004-11-03 20:43 ` Ingo Molnar
2004-11-03 21:05 ` Lorenzo Allegrucci
2004-11-03 19:33 ` john cooper
2004-11-03 23:03 ` Magnus Naeslund(t)
2004-11-04 6:56 ` Ingo Molnar
2004-11-04 19:34 ` Gunther Persoons
2004-11-04 20:31 ` Chris Friesen
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