Dynamic Workload Console - Increasing application server heap size

Follow this procedure to increase the Java™ heap size:
  1. Log on to the computer where Dynamic Workload Console is installed as the following user:
    Windows™ operating systems:
    Any user in the Administrators group.
    UNIX™ operating systems:
    root
  2. Stop the WebSphere Application Server Liberty Base by running:
    Windows™ operating systems:
    DWC_home\appservertools\stopAppServer.bat
    UNIX™ operating systems:
    DWC_home/appservertools/stopAppServer.sh
  3. Open the following file:
    Windows operating systems:
    DWC_DATA_dir\usr\servers\dwcServer\configDropins\overrides\jvm.options
    UNIX operating systems:
    DWC_DATA_dir/usr/servers/dwcServer/configDropins/overrides/jvm.options
  4. Here is an example:
    -Xms4096m
-Xmx4096m
-Xgcpolicy:gencon
#nursery mem size
-Xmn1024m
    Note: In case of high workload (more than 50 concurrent users) use 6144 as heap size and 1536 as nursery mem size. The above suggested settings must be applied when the RAM configuration value twice the value of the heap size.
  5. Save the file jvm.option
  6. Start the WebSphere Application Server Liberty Base, by running
    Windows operating systems:
    DWC_home\appservertools\startAppServer.bat
    UNIX operating systems:
    DWC_home/appservertools/startAppServer.sh