Donald R. Deese

   Beginning with MVS/ESA SP3.1.3, IBM redesigned the logical swapping
   algorithms, integrated the page stealing process with logical
   swapping, and revised the algorithms controlling processor storage
   (central storage and expanded storage).  This logic has been enhanced
   with MVS/ESA SP4.2 and SP4.3.   A major goal of the changed logic is
   to take advantage of increasingly large amounts of processor storage
   and to minimize page and swap I/O operations.  This paper describes
   the concepts and algorithms used to manage central storage with MVS/ESA
   and highlights major changes between MVS/XA and MVS/ESA.

Download paper (pdf format).

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Last updated by Don Deese on 01/20/99.