AIX operating systemsLinux operating systemsWindows operating systems

Resource usage on the Operations Center computer

The number of administrators who are logged in to the Operations Center affects resource usage on the computer where the Operations Center runs.

Resource usage for each logged-in administrator

The number of administrators who are logged in at the same time, and the number of tasks that each is working on, affects the resource usage by the Operations Center. For example, the following situation can be typical:
  • Running the Operations Center uses about 3% of a processor core (based on an Intel X7550 2.00 GHz or equivalent processor).
  • Each administrator who is logged in to the Operations Center uses 2% - 3% of a processor core on the computer where the Operations Center runs. This usage level assumes that each administrator completes about 40 tasks per hour.
  • The Operations Center might have 8 - 10 administrators who are logged in and completing tasks at the same time. A task might be one of the following activities:
    • Opening and viewing a page, window, or wizard in the interface, for example, a storage pool Properties page, a server Quick Look window, an Alert Details window, or the Add Client wizard.
    • Configuring settings on the Settings page
    • Issuing a command from the Operations Center command line
    A typical user might complete 20 - 120 of these tasks per hour.

Memory for the JVM heap size

The Operations Center requires at least 128 MB of memory for the maximum Oracle Java™ virtual machine (JVM) heap size for up to eight concurrently logged-in administrators. This memory requirement assumes that each administrator completes about 40 tasks per hour within the user interface. The JVM uses a maximum of 1 GB, or 25% of the physical memory of the system (with systems that have more than 192 MB of memory). The heap size starts at a smaller amount but can increase up to the maximum.

If the system that is running the Operations Center has more than 1 GB of memory, no adjustments are needed. If you must adjust the memory for the JVM heap size, use the -Xmx option in the jvm.options file for the web server JVM. The jvm.options file is in the following directory, where installation_dir represents the directory where the Operations Center is installed:
  • AIX operating systemsLinux operating systemsinstallation_dir/ui/Liberty/usr/servers/guiServer/
  • Windows operating systemsinstallation_dir\ui\Liberty\usr\servers\guiServer\

If the jvm.options file is not in the directory, and you must adjust the memory, create the file in the directory.