The Legac-e Information Site

Phase 1 - The Benchmark

The main reason for using this set of routines was to provide a benchmark against which the performance benefits of pre-initialisation could be judged when invoking LE programs in an iterative manner.

Opposite are links to the components used to establish the benchmark.

All testing was done in batch mode, primarily to aid debugging as and when required.

Phase 1 - Establishing a Benchmark

Below are the links to the three elements used to establish the benchmark environment.

• The REXX routine used as the driver.
  
  The REXX routine simply uses LINKPGM to invoke the COBOL program multiple times as requested by the EXEC statement PARM field value. As the number displayed by the COBOL program does not change the inference is that the COBOL program is refreshed on each pass even though it is marked RENTrant.
  
  
• The COBOL program invoked from REXX
  
  Simple program to increment and display an internal counter.
  
  
• The Job Control Language (JCL) used for the test.
  
  Batch jobs were used for all test runs to aid debugging as and when necessary.