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From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: BOUIN Alexandre <abouin@domain.hid>
Cc: adeos-main@gna.org
Subject: Re: [Adeos-main] New patch for AT91SAM9261 adeos support for 2.6.19 kernel
Date: Fri, 20 Apr 2007 17:27:36 +0200	[thread overview]
Message-ID: <4628DBE8.7070106@domain.hid> (raw)
In-Reply-To: <403B28AE6257B548B66BB88414AC78330174BBD9@domain.hid>

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


  reply	other threads:[~2007-04-20 15:27 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <403B28AE6257B548B66BB88414AC78330174BBD8@domain.hid>
2007-04-20 15:21 ` [Adeos-main] New patch for AT91SAM9261 adeos support for 2.6.19 kernel BOUIN Alexandre
2007-04-20 15:27   ` Gilles Chanteperdrix [this message]
     [not found] <403B28AE6257B548B66BB88414AC78330174BBEA@STEGOSAURE.adetel.com>
2007-05-03 11:45 ` BOUIN Alexandre
     [not found] <403B28AE6257B548B66BB88414AC78330174BBDE@STEGOSAURE.adetel.com>
2007-04-24 13:14 ` BOUIN Alexandre
2007-04-24 13:26   ` Gilles Chanteperdrix
2007-04-20 14:01 Gregory CLEMENT

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