/usr/src/linux-2.4/include/linux/msg.h gives 16 as a maximum number of message queues. First I'm curious why such a small number Second I'm curious what alternate message passing methods get used where (in my case) many (24+) threads communicate by posing messages to one-another's message queues. Since the processor is a 586/266MHz with 64MB, both size of implementation and speed of operation are significant, with speed being more important. Brian Brunner brian.t.brunner@xxxxxxxxxxxxxxx (610)796-5838 ******************************************************************* This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. www.hubbell.com - Hubbell Incorporated -- Shrike-list mailing list Shrike-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/shrike-list