From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Fri, 23 Mar 2007 09:49:44 +0100
From: Jan Kiszka <jan.kiszka@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-help] [RT_PIPE] - User space read() not waking up
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To: Dmitry Adamushko <dmitry.adamushko@domain.hid>
Cc: Xenomai help <xenomai@xenomai.org>

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Dmitry Adamushko wrote:
> [...]
>> So basically, my question is:
>> If I have rt_pipe_write() writing to a pipe from a kernel module with =
a
>> 200 us period and I have a read() in a tight loop reading from that sa=
me
>> pipe is user space, what could be the origin of the fact that
>> sometimes my
>> read() doesn't get woken up?
>=20
>=20
> Xenomai does provide a Linux system with hard real-time support but it
> doesn't make the Linux kernel itself hard real-time, nor user-space
> applications which relies merely on the standard kernel services.

Good that you read the mail more thoroughly than I did... :-/

Yes, that's obviously an application design issue.

Jan


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