z/OS Performance: Managing Processor Storage in a 64-bit Environment - V1.1
Document Author:
Kathy Walsh
Document ID:
WP100269
Doc. Organization:
Advanced Technical Support
Document Revised:
08/24/2003
Product(s) covered:
z/OS; OS/390; zSeries
Abstract: New Version! OS/390 R10 and z/OS have support for 64-bit mode real storage environments. OS/390 R10 has the ability to run in either 31-bit mode or 64-bit mode on a zSeries, while installations migrating to z/OS on a zSeries processor are able to run only in a 64-bit mode real storage environment. z/OS 1.2 and later releases provide virtual storage exploitation of the addressing range above 2GB.
This document is intended to help installations migrating to a 64-bit mode MVS environment become more familiar with reviewing performance metrics in this environment to ensure optimal performance. Additionally, information on changes in the configuration and tuning of the paging subsystem will be covered.
