Detail line descriptions
- DDNAME
- This represents a file which was open during the observation session. If the same DDNAME is open (and closed) multiple times during the session, it is suffixed with an instance number to indicate this.
- Cylinder Address
- These lines appear when the “+” line command is used to expand a DDNAME line. Each line shows a particular DASD cylinder and further breaks down the measurement by file into quantification by specific cylinders.