From: GSM909@domain.hid
To: gilles.chanteperdrix@xenomai.org
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Time between ISR and RT Task
Date: Fri, 04 Aug 2006 09:08:41 +0200 [thread overview]
Message-ID: <20060804070841.313620@domain.hid> (raw)
GSM909@domain.hid wrote:
> Hello
>
> I have run a few programs with Xenomai tasks and have no problems. But I notice that the time between ISR and RT task ( RT task is suspended and resumed by the ISR) is shorter when Linux have a lot of work ( average load around 10 ) as when Linux has nothing to do( al : 0.05 ).
Do you observe this for worst case, or for average case latencies? Do you observe this when you boot with the idle=poll parameter ?
When idle, Linux uses the 'hlt' instruction, that stops the CPU until an interrupt happen, maybe waking up from this state take a little bit more time than when an interrupt is received directly?
How can I set idel = poll ?
and what are other options for idel ?
Regards
Ted
--
Gilles Chanteperdrix.
--
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next reply other threads:[~2006-08-04 7:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-04 7:08 GSM909 [this message]
2006-08-04 13:27 ` [Xenomai-help] Time between ISR and RT Task Gilles Chanteperdrix
2006-08-04 18:52 ` newsletter
2006-08-12 19:35 ` Gilles Chanteperdrix
-- strict thread matches above, loose matches on Subject: below --
2006-08-03 13:35 GSM909
2006-08-03 17:36 ` Gilles Chanteperdrix
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