This workspace provides wait state (bottleneck) information, showing contention percentages by resource for the address space you have chosen to investigate on the Address Space Bottlenecks Summary workspace or the Address Space CPU Utilization Summary table of the Address Space Overview workspace.
This workspace displays the Address Space Bottlenecks Detail -
Contention (%) by Resource table view, which provides lower-level
information about the address space you selected. 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.
The Execution States table at the top of the Address Space Bottlenecks Detail workspace is a portrait view of the single row of data presented in the table at the bottom of the workspace. This table contains three columns: Attribute, Percent, and Resource. Each attribute listed under the Attribute heading is one whose percentage value is greater than 0.0 in the Bottlenecks Detail workspace. The Percent column shows the percentage of time associated with an attribute for the specific address space in question. The Resource column only applies to Enqueue Wait and Active I/O. For Active I/O wait, it lists the device type, the volume serial number, and the device address. For Enqueue Wait, it contains the enqueue major name.
The Active I/O Wait row contains a link to the DASD MVS Devices workspace. The Enqueue Wait attribute row contains a link to the Enqueue, Reserve, and Lock Summary workspace.
Related topics: Address Space Bottlenecks Summary workspace, Address Space Overview workspace, Organization of system-level predefined workspaces, Attribute groups used by the system-level predefined workspaces