Configuring JVM settings for Sametime Gateway

Set the following required JVM arguments and memory settings for all of your IBM® Sametime® Gateway Server instances. The instructions in this topic are not applicable to any of the SIP Proxy instances you might have.

Procedure

  1. On the Sametime Gateway server, log in to the Integrated Solutions Console as the WebSphere® administrator.
  2. Click Servers > Application Servers > RTCGWServer.
  3. In the Server Infrastructure section, click Java and Process management > Process Definition.
  4. In the "Additional Properties" section, click Java Virtual Machine.
  5. In the Generic JVM arguments field, enter the following value as one continuous line. 
    -Xgcpolicy:gencon -Xgc:scvNoAdaptiveTenure,scvTenureAge=8,stdGlobalCompactToSatisfyAllocate
       -Xmn256m -Xverbosegclog:${SERVER_LOG_ROOT}/gc.log,1,14000
    Important: The Generic JVM arguments must be entered as a single continuous line, despite the fact that it might have been broken into several lines due to documentation formatting limitations.
  6. In the Initial Heap Size field, enter 1500.
  7. In the Maximum Heap Size field, enter 1500.
  8. Click OK.
  9. Save the changes to the master configuration by clicking the Save link in the "Messages" box at the beginning of the page.
  10. If IBM Sametime Gateway is clustered, repeat this task for each node of the cluster.