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From: Daniel Walker <dwalker@mvista.com>
To: linux-kernel@vger.kernel.org
Cc: mingo@elte.hu
Subject: 2.6.15-rt3 + Open Posix Test Suite
Date: Tue, 10 Jan 2006 15:03:29 -0800	[thread overview]
Message-ID: <1136934210.5756.13.camel@localhost.localdomain> (raw)


	It's worth noting that a few tests in the current Open Posix Test Suite
hang RT systems. 

Specifically this test (hope this url comes through),

http://cvs.sourceforge.net/viewcvs.py/*checkout*/posixtest/posixtestsuite/conformance/interfaces/sched_setparam/10-1.c?rev=1.2

sched_setparam test 10-1.c and I think 9-1.c .

The 10-1 test spawns some children at SCHED_FIFO priority 99 , then runs
the following,

void child_process(){
	alarm(2);

	while(1) {
		(*shmptr)++;
		sched_yield();
	}
}

I'm sure this is what's hanging the system, the yield() is one issue.
Another is why the alarm() is never delivered .

Daniel


             reply	other threads:[~2006-01-10 23:03 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-01-10 23:03 Daniel Walker [this message]
2006-01-11  3:53 ` Steven Rostedt
2006-01-11 14:41   ` Daniel Walker

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