TBSM performance: Don't forget to tune your browser
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For the browser client, the Java Plug-in has a default maximum Java heap size of 64MB on Windows, which is too low. The TBSM console browser client uses the IBM Java Plug-in, which is automatically installed on your computer with TBSM. If the Java heap size parameters are not set properly, browser client performance will be slow and your workstation may receive HEAPDUMP and JAVA Core files, an out-of-memory condition, when you are logged on.
To receive good performance from the browser client, you must increase the Java heap size parameters from their default values. Before you start the browser client, take the following steps:
1. In the Windows Control Panel, open the Java Control Panel.
2. If you have multiple Java versions, verify that you have the correct control panel open by confirming the Java Runtime is Version 1.5 and that the JRE is in the IBM path (such as c:\program file
3. Set the Java Runtime Parameters:
The -Xms128m specifies the starting size of the Java heap (128 MB) and -Xmx256m specifies the maximum size.
that the Temporary Files settings are set to Unlimited:
5. Clear the browser cache:
If you observe symptoms of heap memory exhaustion using a maximum Java heap size setting of 256 MB, increase the maximum setting in increments of 64 MB until the symptoms disappear.
Make sure the client workstation has enough memory to handle the maximum heap size. To determine if the client workstation has sufficient memory, observe the available physical memory (as shown on the Windows Task Manager Performance tab) when the workstation is not running the TBSM console client, but is running any other applications that need to run concurrently with the client. Verify that the client workstation has enough available physical memory to hold the entire maximum Java heap size for the TBSM console plus another 150 MB. The additional 150 MB provides an allowance for non-Java heap storage for the TBSM console and extra available memory for use by the operating system.