Re: POSIX Message Queues

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On Thu, 2005-11-17 at 16:40 -0700, Shay, Daniel wrote:
> We have been running a FC4/PPC64 machine where we have run into the
> following issues with POSIX message queues.
> 
>  -An application fails to close/unlink queues, allowing the machine the
> reach the /proc/sys/fs/mqueue/queues_max limit. I don't know how to
> cleanup message queues let open after process dies.  Note: ipcs doesn't
> seem to work with POSIX message queues.

It should.  "ipcrm -Q" or "ipcrm -q" should do it.

>  -The default /proc/sys/fs/mqueue/msg_max is set to 10, we would like to
> have this set to 100 when the machine is rebooted

Edit /etc/sysctl.conf and add the lines:

	# Increase message queue
	fs.mqueue.msg_max = 100

> I've noticed POSIX message queues are relatively new to the Linux 2.6
> kernel, is the support just not finished?

I think it's done.  I could be wrong.

----------------------------------------------------------------------
- Rick Stevens, Senior Systems Engineer     rstevens@xxxxxxxxxxxxxxx -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-  Tempt not the dragons of fate, since thou art crunchy and taste   -
-                         good with ketchup.                         -
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