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Status Future consideration
Workspace z/OS
Categories USS
Created by Guest
Created on Feb 10, 2017

MMAP function under z/OS USS should be able to use 64bit address space.

We have a proof of concept to run an off-the-shelf name indexer product under z/OS USS. This product is a native 64-bit Java 8 application that uses the Lucene indexer. The product functions under USS for small indexes. However, the call to mmap is failing with ENOMEM when trying to scale the application beyond about 2 million names in the index. The PMR listed shows the recommendation that we submit this RFE to allow the mmap function to use a 64-bit addressing space.
As further support for this RFE, the product runs successfully on a 64-bit Windows laptop with 6GB of real memory and 64-bit Java 8, and can handle a 100 Million name index.

Idea priority High
  • Guest
    Reply
    |
    Feb 23, 2021

    This item is not in our plans but is being kept in our backlog.