Sun Java System Access Manager 7.1 Performance Tuning and Troubleshooting Guide

Solaris OS

Sun Fire T1000 and T2000 Servers

If Access Manager is installed on a Sun Fire T1000 or T2000 server, the tuning scripts for Web Server 7.0 and Application Server 8.2 set the JVM GC ParallelGCThreads parameter to 8:


This parameter reduces the number of garbage collection threads, which could be unnecessarily high on a 32-thread capable system. However, you can increase the value to 16 or even 20 for a 32 virtual CPU machine such as a Sun Fire T1000 server, if it minimizes full garbage collection activities.

Solaris SPARC Systems with CMT Processor with CoolThreads Technology

For Solaris SPARC systems with CMT processor with CoolThreads technology, in the /etc/opt/SUNWam/config/ file, it is recommended that you add the following properties at the end of the file:


where value depends on the number of cores in a Sun Fire T1000 or T2000 server. For example, for 8 cores, set value to 8, or for 6 cores, set value to 6.