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Status Not under consideration
Workspace COBOL Compilers
Created by Guest
Created on Aug 30, 2016

RELATED IDEAS

Improve Enterprise COBOL 5/6 performance in high volume CICS transaction environments

Enterprise COBOL 5/6 includes a completely rewritten "back end" that generates high performance object code. It's "claim to fame" is the significant performance improvements it offers customers.

However, those performance improvements are only available in batch. In CICS when we run millions of COBOL transactions per day, performance of COBOL 5/6 is essentially the same as COBOL 4.2.

This requirement is to request that IBM improve the runtime performance for COBOL 5/6 in CICS, so that the same performance improvements offered in batch are also offered in high volume CICS transaction environments.

Idea priority Low
  • Guest
    Reply
    |     May 25, 2020

    Duplicate of RFE 92671

  • Guest
    Reply
    |     Nov 23, 2018

    This RFE is being accepted but we will be focus on improving performance, but online will never be equivalent to batch performance due to additional overhead involved with transactions.

  • Guest
    Reply
    |     Oct 11, 2016

    There was an effort that went in at around COBOL V5.1 GA timeframe to remove COBOL runtime's C library dependency. This work had been picked up by the first PTF of COBOL V5.1. Currently initialization of the COBOL runtime doesn't require bringing up the C (or C++) library into the LE enclave, unless of course C/C++ features are used by the application.

    The code generated by the normal LE C compiler and the METAL C compiler are the same. In fact, the way to get METAL C is to specify a compiler option using the normal LE C compiler. The difference lies in the C library calls. Since the COBOL runtime doesn't call out to the C library, it should not make a difference in performance by using the METAL option.

    We understand the initialization processing is important, and particularly so for small programs in a transaction environment. We will continue to analyze this code path to find areas for improvements. At the same time, we will go beyond just initialization, and will look at other areas as well. In this regard, it would help us tremendously if profiling information is available from an actual user application. Please let us know if you have performance profiles that you can share with us.

  • Guest
    Reply
    |     Sep 27, 2016

    This RFE is being discussed further and requires more time.

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