From: Jan Kiszka <jan.kiszka@domain.hid>
To: Hubert Talbot <Hubert.Talbot@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Non RT PCI device driver vs interrupts (go with rtdm...)
Date: Mon, 25 Feb 2008 09:14:43 +0100 [thread overview]
Message-ID: <47C278F3.1060309@domain.hid> (raw)
In-Reply-To: <47BED8A502000001001928B7@domain.hid>
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Hubert Talbot wrote:
> Finally, I got the precision I expected. The problem was on the way the results were reported.
>
> However, more the frequency of the pulse generator is raised, less the results are good.
>
> I think it is time to go with rtdm...
RTDM is no magic bullet /wrt latency or jitter. You should try to
understand what you are measuring first before blindly replacing
something. I'm surely not saying porting to RTDM is a bad idea, but I
may not help you with what you are actually looking for.
What do you mean with "less good"? What frequencies are we talking
about? What is the critical code path (already considered to use some
tracing tool for analysis?)?
Jan
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next prev parent reply other threads:[~2008-02-25 8:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-22 19:13 [Xenomai-help] Non RT PCI device driver vs interrupts (go with rtdm...) Hubert Talbot
2008-02-25 8:14 ` Jan Kiszka [this message]
2008-02-25 16:54 ` [Xenomai-help] Rép. : " Hubert Talbot
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