Detail Line Hierarchy
The first level detail line displays a PSW (Program Status Word)
address value that the Measurement Task records when it actively observes
SRB CPU. The SRB CPU usage observation at the same PSW address is
accumulated and reported as a single detail line. In addition to the
PSW address value, a separate first level detail line is created if
any of the following values are different:
- Execution in problem or supervisor mode
- Address mode (AMODE) 24, 31 or 64
- Address-space control: primary-space, AR mode, secondary-space or home-space
- PSW key
- SVC number if execution was in a supervisor call
- Object code at the PSW address
You can expand the first level detail line by using the + line command to display the object code at the PSW address. Object code is reported in the form of disassembled machine instructions. The Measurement Task displays a line for each machine instruction from 12 bytes of object code captured during the measurement. The PSW address points to the 6th byte of the 12 bytes; therefore, the first instructions that are reported precede the sampled instruction.
If alternate disassemblies are available, which depend upon the assumed start address, the disassemblies are listed with a subheading of "Alternate Disassembly".