To improve performance, consider certain items
such as operating system and network tuning, planning for network
ports, Java™ Virtual Machine
(JVM) tuning for WebSphere® eXtreme Scale settings,
configuring failover, and other tuning topics.
Planning for network ports WebSphere eXtreme Scale is a
distributed cache that requires opening ports to communicate with
the Object Request Broker (ORB) and Transmission Control Protocol
(TCP) stack among Java Virtual
Machines and other machines. You should plan and control your ports,
especially in a firewall environment such as when you are using a
catalog service and containers on multiple ports.
Operating systems and network tuning
Network tuning can reduce Transmission Control Protocol
(TCP) stack delay by changing connection settings and can improve
throughput by changing TCP buffers.
JVM tuning for WebSphere eXtreme Scale
Java virtual machine
(JVM) tuning can yield a significant improvement in your deployment
of WebSphere eXtreme Scale.
Configuring failover detection
You can configure the amount of time between system checks
for failed servers with the heartbeat interval setting.