Address Space Bottlenecks Summary Workspace

This workspace provides address space-level wait state (bottleneck) information, showing contention percentages by resource. Various types of wait states are identified, including CPU wait percent, I/O wait percent, and enqueue wait percent. (For the full list of address space wait states, see the Address Space Bottleneck Analysis attribute group.)

To use this workspace effectively, review the Address Space Bottlenecks Summary -- Contention (%) by Resource table view to determine whether any address space is exceeding the wait threshold you have specified. This can easily be seen by locating the cells of this table that show either red or yellow alerts to indicate Critical or Warning conditions. For any such address spaces, click on the link to drill down to the Address Space Bottlenecks Detail workspace and review the lower-level data presented there.

By default, the Tape Mount column has a preset threshold (GT 0.0) that provides an informational alert when the job is being delayed for a tape mount.

This workspace also contains the Selected Execution States bar chart. The bar chart provides data for address spaces whose jobs have been in one or more of five execution states for at least 5% of time.

The five execution states are:

You can link to this workspace from the Address Space Counts table in the Address Space Overview workspace.

From this workspace, you can also drill down to the Address Space Bottlenecks and Impact Analysis workspace.

Note: This workspace cannot collect historical data.

See also:

Address Space Overview Workspace
Address Space Bottlenecks Detail Workspace

Address Space Bottlenecks and Impact Analysis Workspace

Organization of system-level predefined workspaces

Attribute groups used by system-level predefined workspaces