From: Daniele Nicolodi <daniele@grinta.net>
To: xenomai@xenomai.org
Subject: Re: [Xenomai] interrupt service
Date: Fri, 27 Feb 2015 00:17:41 +0100 [thread overview]
Message-ID: <54EFA995.4010402@grinta.net> (raw)
In-Reply-To: <44wq34cmfh.fsf@lowell-desk.lan>
Hello Gilbert,
what I'm suggesting is maybe naive, but as the problem seems to origin
from the frequency of the interrupts, and since you have control over
the whole stack, can you try to lower the irq rate?
If things start to magically work at at lower rates, at least you would
have a known working configuration on which base optimization and design
decisions.
On 26/02/15 23:55, Lowell Gilbert wrote:
>> This is what bothers me. The CPU running the ISR code is likely unable
>> to handle any regular linux activity in this case.
>
> There isn't any useful Linux activity happening there. I just need to
> keep it from interfering much with the *other* CPU.
This has been repeated many times now: even if the Linux kernel is not
doing anything useful, it needs to do some amount of housekeeping to
ensure that things keep working fine.
Cheers,
Daniele
next prev parent reply other threads:[~2015-02-26 23:17 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-18 22:03 [Xenomai] interrupt service Lowell Gilbert
2015-02-18 22:08 ` Gilles Chanteperdrix
2015-02-19 4:44 ` Lowell Gilbert
2015-02-19 21:06 ` Lowell Gilbert
2015-02-20 19:38 ` Lowell Gilbert
2015-02-20 22:57 ` Gilles Chanteperdrix
2015-02-24 23:01 ` Lowell Gilbert
2015-02-24 23:34 ` Gilles Chanteperdrix
2015-02-25 16:22 ` Lowell Gilbert
2015-02-25 17:34 ` Philippe Gerum
2015-02-25 18:35 ` Philippe Gerum
2015-02-25 20:41 ` Lowell Gilbert
2015-02-25 21:02 ` Lowell Gilbert
2015-02-26 11:19 ` Philippe Gerum
2015-02-26 16:38 ` Lowell Gilbert
2015-02-26 17:26 ` Gilles Chanteperdrix
2015-02-26 17:56 ` Philippe Gerum
2015-02-26 19:25 ` Lowell Gilbert
2015-02-26 20:11 ` Gilles Chanteperdrix
2015-02-26 21:58 ` Lowell Gilbert
2015-02-26 22:37 ` Gilles Chanteperdrix
2015-02-26 23:12 ` Lowell Gilbert
2015-02-26 23:09 ` Philippe Gerum
2015-03-06 22:57 ` Lowell Gilbert
2015-03-06 22:58 ` Lowell Gilbert
2015-03-08 15:52 ` Gilles Chanteperdrix
2015-03-09 13:28 ` Lowell Gilbert
2015-02-26 20:24 ` Philippe Gerum
2015-02-26 22:55 ` Lowell Gilbert
2015-02-26 23:17 ` Daniele Nicolodi [this message]
2015-02-26 23:21 ` Philippe Gerum
2015-02-27 7:15 ` Tom Evans
2015-02-25 8:30 ` Philippe Gerum
2015-02-25 9:36 ` Philippe Gerum
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