NetBSD Problem Report #38750

From martin@duskware.de  Sun May 25 22:34:04 2008
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Date: Sun, 25 May 2008 22:10:32 +0000 (UTC)
From: ad@netbsd.org
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To: netbsd-bugs-owner@NetBSD.org
Subject: SCHED_FIFO behaviour does not match POSIX
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>Number:         38750
>Category:       kern
>Synopsis:       SCHED_FIFO behaviour does not match POSIX
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    rmind
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun May 25 22:35:00 +0000 2008
>Last-Modified:  Mon Nov 09 06:32:58 +0000 2009
>Originator:     Andrew Doran
>Release:        4.99.63
>Organization:
The NetBSD Project
>Environment:
n/a
>Description:
The behavior of SCHED_FIFO threads doesn't match the specification.
Quote:

--
When a running thread becomes a preempted thread, it becomes the head of the thread list for its priority.
--

NetBSD currently does the opposite. It would be good to verify some of
the other requirements are met.


>How-To-Repeat:
Read the spec:

http://www.opengroup.org/onlinepubs/007908799/xsh/realtime.html

I won't cut and paste it here, but see the section with header
SCHED_FIFO.

>Fix:
Match spec.

>Release-Note:

>Audit-Trail:

Responsible-Changed-From-To: kern-bug-people->rmind
Responsible-Changed-By: rmind@NetBSD.org
Responsible-Changed-When: Mon, 09 Nov 2009 06:32:58 +0000
Responsible-Changed-Why:
Take.


>Unformatted:

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