DDNAME
This line identifies the DDNAME of a file for which delays due to wait for I/O completion were observed.
| Under Heading | This is Displayed |
|---|---|
| Description | The volume ID (VOLSER) for the DDNAME. For a multivolume data set, the first volume is displayed. |
| Percent of Time | The percentage of the measurement interval time the step was waiting for completion of I/O for the indicated DDNAME. |