You can make configuration adjustments to improve the UDP multicast performance of peer-to-peer communication in your VMware GemFire system.
Before you begin, you should understand VMware GemFire Basic Configuration and Programming. See also the general communication tuning and UDP tuning covered in Socket Communication and UDP Communication.
Multicast installations require more planning and configuration than TCP installations. With IP multicast, you gain scalability but lose the administrative convenience of TCP.
TCP automatically adjusts its speed to the capability of the processes using it and enforces bandwidth sharing so that every process gets a turn. With multicast, you must determine and explicitly set those limits.
After you determine the maximum transmission rate, configure and tune your production system.
When you use multicast for messaging and data distribution, you need to understand how the health monitoring setting works and how to control memory use.
Several problems may arise during the initial testing and tuning process for multicasting.