Instant Messaging Multiplexor Configuration Best Practices

Consider the following suggestions and generalizations when planning your multiplexor deployment. The parameters discussed in this section are located in the iim.conf file.

• The number of iim_mux.maxthreads should not exceed the number of CPUs on your server.

  This helps maximize resource utilization and optimizes processing speed.

• The iim_mux.maxsessions value should be high enough to avoid rejecting connections, but it should be reasonable enough so that the multiplexor processes to not get overloaded.

• Be sure that your expected number of concurrent client connections is less than the maximum possible by a safe margin.

• Do not configure threads or number of concurrent sessions to more than you require. Otherwise, you will unnecessarily consume system resources.

• A good starting point is to configure iim_mux.numinstances to the number of CPUs on the system.

See the Sun Java System Instant Messaging 7.2 Administration Guide for more detailed information about these parameters.