User demands on system resources

You can reduce user-generated demands on system resources.

Each time a user requests data, a demand is made on system resources such as:

• When users use IBM® Enterprise Portal Server clients:
  • To investigate alerts by navigating workspaces
  • With auto-update enabled on workspaces that contain graphs or tables
• When users frequently access workspaces with tabular views that show data from monitoring agents that return large volumes of data. Keep in mind that:
  • Auto-refreshed screens always require memory.
  • Large intermittent reports can cause spikes in memory utilization.

You can:

• Reduce IBM Enterprise Portal Server client and server demand on memory and processor resources.
• Improve response times for workspace:
  • Data retrievals
  • Screen refreshes

A query assigned to a chart or table view requests data from a specific attribute group. When you open or refresh a workspace, the query runs. You can substantially reduce the number of data samples that a query retrieves and the volume of data that a query retrieves:

• By customizing the query to filter out insignificant data
• By reducing the number of rows and columns in a query
• By applying the same query to multiple views in a workspace

The use of the auto-refresh facility can negatively affect performance. However, if you do use auto-refresh, set the interval setting to a long interval on a graphic view instead of a tabular view, to reduce the impact on performance.