From: Jan Kiszka <jan.kiszka@domain.hid>
To: Bart Jonkers <jonkersbart@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] testing interrupt latency
Date: Fri, 04 Aug 2006 08:26:00 +0200 [thread overview]
Message-ID: <44D2E878.2030509@domain.hid> (raw)
In-Reply-To: <1154615459.9835.62.camel@domain.hid>
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Bart Jonkers wrote:
> Hey,
>
> I have written a small module to test the interrupt response time of
> Xenomai to compare it with the time of Linux.
>
> I generate an interrupt on a GPIO pin and toggles another GPIO pin in
> the interrupt service routine. (code below)
> The time between the generated interrupt and the value change on the
> GPIO pin is taken as interrupt response time.
Can we say that playing with such GPIO pins is a good generic way to
measure IRQ latencies on ARM platforms? If so, do you see a chance to
enhance the existing irqbench framework with this mechanism?
Jan
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prev parent reply other threads:[~2006-08-04 6:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-03 14:30 [Xenomai-help] testing interrupt latency Bart Jonkers
2006-08-03 18:00 ` Gilles Chanteperdrix
2006-08-03 18:18 ` Philippe Gerum
2006-08-04 6:26 ` Jan Kiszka [this message]
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