Date: Wed, 29 Dec 1999 10:08:02 +1100 (EST) From: Stanley Hopcroft <Stanley.Hopcroft@noteshub01.aipo.gov.au> To: questions@FreeBSD.ORG Cc: Stanley.Hopcroft@IPAustralia.Gov.AU Subject: Programming question - How do I make SysV IPC Message queues bigger ? Message-ID: <Pine.BSF.4.10.9912290940340.310-100000@stan.aipo.gov.au>
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Dear Ladies and Gentlemen, I am writing to ask your help with an application using System V Message Queues for IPC. I would like to modify the application to increase the size of 1 each message (from MSGMMAX in sys/msg.h, of 2048 bytes) 2 the queue capacity (another constant in that header file) Should I modify the kernel definitions of those constants and then have the application define these constants accordingly ? The fantastic book "Advanced Programming in the Unix Environment" (APUE) suggests that these limits can be redefined but I am not sure how to. sysctl does not seem to deal with these limits nor does ulimit or login.conf. Your advice will be gratefully accepted. APUE does not seem to have a high opinion of Sys V IPC but I am too ignorant to consider named pipes or other alternatives. Thank you, Yours sincerely. Network Specialist IP Australia +61 2 6283 3189 +61 2 6281 1353 FAX To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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