From: Ingo Molnar <mingo@elte.hu>
To: Rui Nuno Capela <rncbc@rncbc.org>
Cc: 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>,
Florian Schmidt <mista.tapas@gmx.net>,
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>
Subject: Re: Real-Time Preemption, -RT-2.6.10-rc2-mm3-V0.7.31-7
Date: Wed, 1 Dec 2004 11:32:51 +0100 [thread overview]
Message-ID: <20041201103251.GA18838@elte.hu> (raw)
In-Reply-To: <17532.195.245.190.94.1101829198.squirrel@195.245.190.94>
* Rui Nuno Capela <rncbc@rncbc.org> wrote:
> > if (!(count++ & 1))
> > gettimeofday(0,1);
> > }
> Done that.
>
> New XRUN traces are attached, while running RT-V0.7.31-15 now.
> However, I don't seem to get any notorious difference on the results,
> since previous ones. All latencies traced ca. 26-27 usecs.
ah, found the reason why the trace length didnt improve:
+ { // Trigger off trace every other poll...
+ static unsigned int xruntrace_count = 0;
+ if ((xruntrace_count++ % 1) == 0)
+ gettimeofday(0,1);
+ }
this should either be '& 1' as i originally suggested, or '% 2'. The way
it is right now it will stop the trace every time - i.e. what we had
before.
so please disregard my freerunning suggestionsand try the two-periods
solution first.
Ingo
next prev parent reply other threads:[~2004-12-01 10:33 UTC|newest]
Thread overview: 65+ 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 [this message]
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
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 --
2004-11-28 19:42 Eran Mann
2004-11-30 8:58 ` Ingo Molnar
2004-11-30 16:20 ` Gene Heskett
2004-11-30 14:33 Mark_H_Johnson
2004-12-01 9:02 ` Ingo Molnar
2004-12-01 14:57 Mark_H_Johnson
2004-12-01 21:20 ` Ingo Molnar
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