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Date: Fri, 20 Apr 2007 17:27:36 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Adeos-main] New patch for AT91SAM9261 adeos support for 2.6.19
 kernel
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To: BOUIN Alexandre <abouin@domain.hid>
Cc: adeos-main@gna.org

BOUIN Alexandre wrote:
> The clock settings of the AT91SAM9261-EK board I am using, displayed by the
> kernel are:
> Clocks: Clocks: CPU 198 MHz, master 99 MHz, main 18.432 MHz
> 
> Running a 2.6.19 I-pipe kernel, setting the nucleus latency
> (/proc/xenomai/latency) to 323us

It is a high. You should get plenty of negative values.


>, I get a worst case latency of 231 us

What is your kernel configuration, do not you have some statistics/debug
options enabled ?

-- 
                                                 Gilles Chanteperdrix