Tuning the Benchmark Driver
The Benchmark Driver does need to be tuned to ensure that it is driving the benchmark correctly:
1. The server running the benchmark should have plenty of memory (up to 4Gb) and the server should ideally have two CPUs (500Mhz or higher). The server should also have a good NIC (1 Gigabit if possible) and be on a private network.
2. The Benchmark Driver environment file, in this example C:\SPECjAppServer2001\config\jboss32.env, may have to be edited to modify the JAVA environment variable. The following command line parameters might need to be added to the JAVA environment variable:
-XX:NewSize=32m �XX:MaxNewSize=32m �Xms96m �Xmx96m -XX:+UseTLAB -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000