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Date: Wed, 22 Apr 2009 21:32:51 +0200
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai-help] An answer to Steven's questions.
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To: Steven Seeger <steven.seeger@domain.hid>
Cc: Xenomai help <xenomai@xenomai.org>

Steven Seeger wrote:
> The problem is that latency on Xenomai (even with kernel based  
> threads) is terrible on our board compared to RTAI and it's causing us  
> issues. I'm starting to think that Xenomai on Geode is not appropriate  
> for our application, but we have to salvage the work that's already  
> been done. At this point I'm simply looking to minimize the problem.
> 
> We are seeing jitters of upwards of 70us when we have a 125us and a  
> 500us task. That's a huge amount and we can't deal with it. Hopefully  
> the problem will be something else. It would be nice to have my other  
> questions answered, though.

To give you some figures, the Geode you sent me has a latency around
40us under full load.

-- 
					    Gilles.