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zIIP exploitation on an ADS-heavy CV .... analysis

  • 1.  zIIP exploitation on an ADS-heavy CV .... analysis

    Posted 01-05-2016 03:42 PM

    when z/IP exploitation was first introduced in R17, the biggest concern was that a user-code (ADS or DC-COBOL) heavy CV would not fare as well with z/IIP exploitation enabled, and perhaps would even suffer under z/IIP exploitation


    our worst fears were confirmed in one CV (62) where TCB usage increased 10% due to z/iip restrictions and the massive number of swaps (at times over 10K per TRANSACTION


    over the IDMS releases, due to the modification (fixes) and z/IIP policy changes, I can report that during a trial period I can report the following:


    wthout zip

    50K tasks/day

    0.020 total cpu/task (all TCB)

    no swaps (obviously)


    with zip:

    same 50K tasks/day

    0.022 total cpu/task

    0.005 TCB cpu/task

    0.017 SRB cpu/task (ziip)

    2K+ swaps/ transaction


    every CV is different, and every day is different fror a given CV


    but I am confident in saying that in OUR environment, z/IIP exploitation  has led to a definite and measurable billable cpu reduction in ALL our environments

  • 2.  Re: zIIP exploitation on an ADS-heavy CV .... analysis

    Posted 02-07-2019 03:43 PM

    Hello Everyone!


    The ADS zIIP Enablement feature is now published, PTF SO06651 for IDMS Release 19.0!!   Thank you and let us know if you have any questions!


    Nakesha Newbury


    Enhancements Since the Base Version 19.0 Software Release - CA IDMS - 19.0 - CA Technologies Documentation