Performance

RMI provides a simple interface for writing network applications. Calling a remote method is almost the same as calling a local method. But an application that uses remote objects is very different from an application that is local. Some of the main differences are:

Increased latency
Network failures
Remote machine problems

A remote method call will never be as fast as a local method call because of marshalling and unmarshalling of parameters. This chapter shows an example that calculates the time taken by a local method call and a remote method call.

The source code needed for this example is stored in the examples\Performance directory. The "Performance" directory contains the following files:

• TimecalInterface.java
• TimecalServerImpl.java
• TimecalClient.java
• Compile.bat
• Rmicompile.bat
• RunServer.bat
• RunClient.bat

Test this application on a network.