From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Henry Bausley <hbausley@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] Reducing Kernel Mode Interrupt Latency
Date: Tue, 21 Oct 2008 18:19:05 +0200 [thread overview]
Message-ID: <48FE00F9.6040609@domain.hid> (raw)
In-Reply-To: <1224605536.10407.15.camel@domain.hid>
Henry Bausley wrote:
> Is there any way the kernel mode interrupt handling maximum times can be
> decreased. I very much need to reduce my kernel mode interrupt
> latencies. I know my hardware is capable of better performance based
> upon measurements done with RT Linux. Below is our timing comparison,
> all times are the maximums.
I will let the PPC specialists answer, but you can:
- make sure that Xenomai is compiled in kernel and not as a module,
- increase /proc/xenomai/latency (you can write a new value to it), but
in this case, you have to accept to be woken up before the timers shots.
--
Gilles.
next prev parent reply other threads:[~2008-10-21 16:19 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-16 12:52 [Xenomai-help] Need some help getting past an ken barnett
2008-10-16 12:58 ` Gilles Chanteperdrix
2008-10-16 13:40 ` [Xenomai-help] Unhandled irq 9 ken barnett
2008-10-21 16:12 ` [Xenomai-help] Reducing Kernel Mode Interrupt Latency Henry Bausley
2008-10-21 16:19 ` Gilles Chanteperdrix [this message]
2008-10-21 16:22 ` Philippe Gerum
2008-10-21 21:00 ` Alexis Berlemont
2008-10-22 7:02 ` Wolfgang Grandegger
2008-10-27 15:08 ` Philippe Gerum
2008-10-28 23:15 ` Henry Bausley
2008-11-07 12:13 ` Philippe Gerum
2008-10-21 20:50 ` [Xenomai-help] Need some help getting past an Gilles Chanteperdrix
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