Detail line hierarchy

The first level detail line shows a PSW (program status word) address value that Application Performance Analyzer recorded when it made an active CPU observation. Each repeated CPU usage observation at the same PSW address is accumulated and reported as a single detail line.

In addition to the PSW address value, Application Performance Analyzer creates a separate first-level detail line 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 homespace
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 to show the object code at the PSW address. Object code is reported in the form of disassembled machine instructions. Application Performance Analyzer displays a line for each machine instruction from 12 bytes of object code captured during the measurement. The PSW address points to the sixth byte of the 12 bytes, so the first instructions reported are the ones that preceded the sampled instruction. When alternate disassembly are available (depending upon the assumed start address), they are listed under the subheading of "Alternate Disassembly".