From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Steven Seeger <steven.seeger@domain.hid>
Cc: Xenomai help <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] An answer to Steven's questions.
Date: Wed, 22 Apr 2009 21:32:51 +0200 [thread overview]
Message-ID: <49EF70E3.7090105@domain.hid> (raw)
In-Reply-To: <468CF57C-40DE-498B-9C2C-C73AE07CFE4F@comcast.net>
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.
next prev parent reply other threads:[~2009-04-22 19:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-22 18:44 [Xenomai-help] An answer to Steven's questions Gilles Chanteperdrix
2009-04-22 19:27 ` Steven Seeger
2009-04-22 19:31 ` Gilles Chanteperdrix
2009-04-22 21:17 ` Steven Seeger
2009-04-22 22:17 ` Philippe Gerum
2009-04-22 23:08 ` [Xenomai-core] " Steven Seeger
2009-04-23 8:10 ` Philippe Gerum
2009-04-22 19:32 ` Gilles Chanteperdrix [this message]
2009-04-22 21:18 ` Steven Seeger
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