The IBM® WebSphere® Application Server is a Java™ based process and requires
a Java virtual machine (JVM)
environment to run and support IBM Sametime® Advanced. You can
tune the Java runtime environment
for performance by turning on verbose garbage collection and setting
the heap size.
About this task
Note: The following
instructions contain settings that were tested in IBM labs. These are just a starting point. Since
your deployment might have a configuration unique to your site, these
settings might require more adjustment.
Procedure
- From the Integrated Solutions Console, click .
- Under Server Infrastructure, click .
- Under Additional Properties, click Java Virtual
Machine.
-
Set the following properties:
- Set the Initial heap size field to 512 MB.
- Set the Maximum heap size to 1536 MB.
- Select the Verbose garbage collection check
box.
-
In the Generic JVM arguments field, enter the following argument.
- Click OK, and click Save to
save changes to the master configuration.
-
Click Custom properties.
- Click New.
- Add the property com.ibm.websphere.security.util.authCacheMaxSize,
with a value of 120000.
- If Sametime is
clustered, repeat the preceding steps for each node of the cluster.