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From: ronald@robobar.co.uk (Ronald S H Khoo)
Newsgroups: comp.unix.xenix.sco
Subject: xenix unhappy with MSGSEG set to 8192 ?
Message-ID: <1991Mar28.152501.16389@robobar.co.uk>
Date: 28 Mar 91 15:25:01 GMT
Sender: ronald@robobar.co.uk (Ronald S H Khoo)
Organization: Robobar Ltd., Perivale, Middx., ENGLAND.
Lines: 17

I've left the other params defaulted, and just upped MSGSEG to
8192, and msgsnd() now just hangs (or returns EAGAIN if IPC_NOWAIT
is true).  It's OK at 8001 or 9216 but just seems to dislike 8192.

Are there any known problems with Xenix's message queue code ?
Any positive info on how best to avoid them (like good magic values
to tune to) ? 

[ I'm on 2.3.2 (AT) + xnx155b, but I'd like to know about problems with 2.2.1
  too (386, that is) -- some of our sites at 2.2.1 (with default tuning) seem
  to have their message queues get stuck in a similar way on an irregular but
  frequent basis.  I'd previously blamed our code, written long before I
  arrived, I hasten to add, but with this problem arising, I've begun to
  wonder ... ]

-- 
Ronald Khoo <ronald@robobar.co.uk> +44 81 991 1142 (O) +44 71 229 7741 (H)