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From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Georg Gottleuber <gg@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] strange latency output (xenomai-2.4.5)
Date: Tue, 10 Feb 2009 17:21:48 +0000	[thread overview]
Message-ID: <4991B7AC.60901@domain.hid> (raw)
In-Reply-To: <E1LWwFb-000754-FT@mailer.emlix.com>

Georg Gottleuber wrote:
> 
> Gilles Chanteperdrix schrieb:
>> Georg Gottleuber wrote:
>>> Hi,
>>>
>>> I recently port a  ARM926EJ-S mach to Xenomai
>>> (like described in http://www.xenomai.org/index.php/I-pipe:ArmPorting).
>>>
>>> While testing with latency I got this output:
>>> # /usr/xenomai/bin/latency  -p 1000 -h -s -H 500 -t 1
>>> == Sampling period: 1000 us
>>> == Test mode: in-kernel periodic task
>>> == All results in microseconds
>>> warming up...
>>> RTT|  00:00:01  (in-kernel periodic task, 1000 us period, priority 99)
>>> RTH|-----lat min|-----lat avg|-----lat max|-overrun|----lat best|---lat worst
>>> RTD|      78.992|     104.308|     124.131|       0|      78.992|     124.131
>>> ...
>>> RTD|      14.678|      68.413|      96.275|       0|       9.528|     155.321
>>> RTD|      84.046|     116.435|     175.192|       0|       9.528|     182.139
>>> ...                                ^^^^^^^                            ^^^^^^^
>> I do not understand, what is wrong with these values ?
> 
> It thought, if "lat max" of the current interval is bigger than "lat worst", this "lat
> max" updates the "lat worst". So I ask myself, out of which interval comes the updated 182
> value?

Ok. Got it.

What type of floats are you compiling with ?

-- 
                                                 Gilles.


  reply	other threads:[~2009-02-10 17:21 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-02-10 16:49 [Xenomai-help] strange latency output (xenomai-2.4.5) Georg Gottleuber
2009-02-10 16:47 ` Gilles Chanteperdrix
2009-02-10 17:22   ` Georg Gottleuber
2009-02-10 17:21     ` Gilles Chanteperdrix [this message]
2009-02-10 17:29     ` Gilles Chanteperdrix
2009-02-10 17:46       ` Georg Gottleuber
2009-02-10 19:16         ` Gilles Chanteperdrix
2009-02-10 19:46           ` Georg Gottleuber

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