Print

Increasing memory available to the JVM for IBM Lotus Sametime Community Server (Windows)

About this task

If your enterprise has a large number of users (for example if you anticipate up to or more than 10,000 Domino users, or a BHCC of 12,000), it is likely that the Java Virtual Machine (JVM) will consume more memory than it has available. To avoid this condition, set the memory for the JVM at I GB (1024M) on the IBM Lotus Sametime Server. For Windows installations, use this procedure to set the memory for the JVM.

Procedure

  1. On the Sametime server, click Start > Run > Regedit, and press ENTER.
  2. From My Computer, select HKEY_LOCAL_MACHINE > SOFTWARE > Lotus > Sametime > Meeting Server > Services.
  3. Click File > Export, and select a convenient location to back up your registry (in case you need to revert to it at a later time).
  4. From My Computer, select HKEY_LOCAL_MACHINE > SOFTWARE > Lotus > Sametime > Meeting Server > Services > Telephony Service.
  5. In the right panel of the window, double-click ArgString.
  6. From the Edit String window, under Value data, move your cursor to the beginning of the string. The string in the Value data box will be similar to the following sample string: -Djava.util.logging.config.file=SametimeDiagnostics_Telephony.properties

    Using this string, you will specify the default maximum memory available for the Telephony Service virtual machine. Since both services now run under the same virtual machine, you must increase this value. The value you specify depends on the number users in your enterprise. If your enterprise has a large number of users (for example, if you anticipate up to 10,000 Domino users or a BHCC of 12,000), it recommended that you set the memory to 1024 MB (1 GB). If your enterprise has a smaller number of users, it is recommended that you set the memory to 512 MB.

  7. At the beginning of the Value data box, perform one of the following steps:
    • If you want to set the default maximum memory to 512 MB, enter -Xmx512m

      The string in the Value data box will be similar to the following sample string: -Xmx512m -Djava.util.logging.config.file=SametimeDiagnostics_Telephony.properties

    • If you want to set the default maximum memory to 1024 MB, enter -Xmx1024m

      The string in the Value data box will be similar to the following sample string: -Xmx1024m -Djava.util.logging.config.file=SametimeDiagnostics_Telephony.properties

  8. Click the OK button.
  9. Close the Registery Editor.