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From: Ingo Molnar <mingo@elte.hu>
To: Florian Schmidt <mista.tapas@gmx.net>
Cc: Rui Nuno Capela <rncbc@rncbc.org>,
	linux-kernel@vger.kernel.org, Lee Revell <rlrevell@joe-job.com>,
	mark_h_johnson@raytheon.com, "K.R. Foley" <kr@cybsft.com>,
	Bill Huey <bhuey@lnxw.com>, Adam Heath <doogie@debian.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Michal Schmidt <xschmi00@stud.feec.vutbr.cz>,
	Fernando Pablo Lopez-Lezcano <nando@ccrma.stanford.edu>,
	Karsten Wiese <annabellesgarden@yahoo.de>,
	Gunther Persoons <gunther_persoons@spymac.com>,
	emann@mrv.com, Shane Shrybman <shrybman@aei.ca>,
	Amit Shah <amit.shah@codito.com>,
	Esben Nielsen <simlo@phys.au.dk>, Andrew Morton <akpm@osdl.org>
Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-19
Date: Thu, 2 Dec 2004 14:49:34 +0100	[thread overview]
Message-ID: <20041202134934.GA32216@elte.hu> (raw)
In-Reply-To: <20041202144037.5c9da188@mango.fruits.de>


* Florian Schmidt <mista.tapas@gmx.net> wrote:

> Ok, so if i want to find out whether a client violates the RT
> constraints for its process callback i would have to add a call to
> gettimeofday(1,1) at the start of the process callback and
> gettimeofday(1,0) at the end.
> 
> Everything which causes a reschedule inbetween will then cause SIGUSR2
> to be sent to the client for which i could either add a signal handler
> in the client or just use gdb to get notified of it. 

correct. I'd expect there to be a number of less critical reschedules
happening around startup/shutdown of a client, which one could consider
a false positive, but there should be no unexpected rescheduling while
the client is up and running.

	Ingo

  reply	other threads:[~2004-12-02 13:49 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-26 12:12 Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-7 Rui Nuno Capela
2004-11-29 11:05 ` Ingo Molnar
2004-11-29 11:16 ` Ingo Molnar
2004-11-29 11:24   ` Ingo Molnar
2004-11-29 15:42     ` Ingo Molnar
2004-11-29 13:13   ` Rui Nuno Capela
2004-11-29 14:33     ` Ingo Molnar
2004-11-29 15:23       ` Ingo Molnar
2004-11-29 23:16         ` Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-13 Gene Heskett
2004-11-30  1:50           ` K.R. Foley
2004-11-30  3:19             ` Gene Heskett
2004-11-30  4:54             ` Gene Heskett
2004-11-30 15:26               ` K.R. Foley
2004-11-30 16:24                 ` Gene Heskett
2004-11-30 16:52                   ` Zwane Mwaikambo
2004-12-01  7:16                     ` Gene Heskett
2004-11-30 16:57                   ` K.R. Foley
2004-11-30 10:29         ` Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-7 Rui Nuno Capela
2004-11-30 13:19           ` Ingo Molnar
2004-11-30 15:39             ` Rui Nuno Capela
2004-11-30 16:42               ` Ingo Molnar
2004-12-01 10:32               ` Ingo Molnar
2004-12-01 11:25                 ` Ingo Molnar
2004-12-01 12:49                   ` Rui Nuno Capela
2004-12-01 12:47                 ` Rui Nuno Capela
2004-12-01 15:40                   ` Ingo Molnar
2004-12-01 16:06                     ` Ingo Molnar
2004-12-01 16:20                       ` [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-19 Ingo Molnar
2004-12-01 16:31                         ` Ingo Molnar
2004-12-01 18:59                         ` Rui Nuno Capela
2004-12-01 21:29                           ` Ingo Molnar
2004-12-01 21:30                             ` Ingo Molnar
     [not found]                               ` <32788.192.168.1.8.1101938057.squirrel@192.168.1.8>
2004-12-01 21:58                                 ` Ingo Molnar
2004-12-01 22:04                                   ` Rui Nuno Capela
2004-12-01 22:09                                 ` Ingo Molnar
2004-12-01 22:31                                   ` Rui Nuno Capela
2004-12-02  9:12                                     ` Rui Nuno Capela
2004-12-02 12:59                                       ` Rui Nuno Capela
2004-12-02 16:38                                         ` Fernando Lopez-Lezcano
2004-12-01 22:43                                   ` Florian Schmidt
2004-12-02  8:40                                     ` Ingo Molnar
2004-12-02 12:22                                       ` Florian Schmidt
2004-12-02 12:29                                         ` Ingo Molnar
2004-12-02 13:06                                           ` Florian Schmidt
2004-12-02 13:10                                             ` Ingo Molnar
2004-12-02 13:40                                               ` Florian Schmidt
2004-12-02 13:49                                                 ` Ingo Molnar [this message]
2004-12-02 16:08                                                   ` Florian Schmidt
2004-12-02 17:44                                                   ` Florian Schmidt
2004-12-02 21:12                                                     ` Florian Schmidt
2004-12-02 13:18                                             ` Rui Nuno Capela
2004-12-03  1:41                         ` Fernando Lopez-Lezcano
2004-12-03  2:23                           ` Fernando Lopez-Lezcano
2004-11-30 18:13   ` Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-7 Remi Colinet
2004-11-30  8:15     ` Ingo Molnar
2004-12-01  8:30       ` Eran Mann
2004-12-01  8:53         ` Ingo Molnar
2004-12-01 18:19           ` Adam Heath
  -- strict thread matches above, loose matches on Subject: below --
2004-12-02 21:01 [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-19 Mark_H_Johnson

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