HP-UX 11i and MSGMNB

From: A. LeBlanc (aleblanc@upfrontit.com)
Date: 04/05/03 

From: aleblanc@upfrontit.com (A. LeBlanc)
Date: 5 Apr 2003 10:30:15 -0800

Greetings,

In HP-UX 11i, the maximum values for the kernel parameters MSGMNB have
been raised. The old maximum for MSGMNB was 64K. I increased it
beyond this, and I'd like to confirm that it has taken effect. The
updated values are apparent in SAM, with the kmtune command, and if
you look inside /stand/system. However, when I issue "ipcs -qb", the
QBYTES field is never larger than 64K. I would have expected this to
exceed 64K after the change. I understand QBYTES to be the amount of
space left in a message queue. Thus, and empty one should be
reporting the maximum size of the queue. Maybe I misunderstand
QBYTES.

Anyway, other than the OS indicators I mentioned, can anyone suggest
another way to prove that the maximum size of a message queue is now
greater than 64K? At this point I'd like to get the messaging
subsytem to tell me, as I had hoped ipcs would.

Thanks very much.