VSE-PROFILER

The problem:

There is no way to sample what goes on in a partition at regular intervals for a defined period. The only commercial product (AFAIK) is STROBE, but only for the other op-sys.

(new since 20/Aug/2008)

The solution for COBOL and PLI only:

Since the demise of FCOBOL the option COUNT is gone as well. Here is a replacement for it. It has also support for wall-clock timing. More details on the implementation and what you can do with it can be found here.

The solution:

With VSE-PROFILER you get a program that can up to 300 times per second sample the PSW of another partition. The free code comes with a PROFEXIT in source that can be tailored to your own needs. The way it comes it sumarises and sorts the entries in the sample-table.

You can see from the output of PROFEXIT that

the monitored program was WHATEVER
the cpu-time (as in JA-tables) is 50% of the period monitored
6000 samples taken
3050 of the monitored samples where taken while in wait (SVC7)
640 spend in and around offset 1500 into program
635 spend in and around offset 4500 into program
125 spend in and around an SVA-routine
and so on.

Sample of reformated data (new on 26th of Dez 2005)

Questions and Answers that came up during pre-GA.

Contact me for further questions.

Download the program. This is all you need.

For those interested in the details: The source for the PROFEXIT is here.