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What is the overhead associated with a Subsystem Analyzer extent and volume collection?

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Article ID: 188924

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Updated On:

Products

Bind Analyzer for DB2 for z/OS SQL-Ease for DB2 for z/OS SYSVIEW Performance Management Option for DB2 for z/OS Plan Analyzer for DB2 for z/OS Subsystem Analyzer for DB2 for z/OS Database Management for DB2 for z/OS - Performance Suite Database Management for DB2 for z/OS - SQL Performance Suite Insight Performance Monitor for DB2 UDB for z/OS

Issue/Introduction

This document gives a rough estimate of the overhead associated with a Subsystem Analyzer extent and volume collection.

Environment

Release : 19.0

Component : CA Subsystem Analyzer for Db2 for z/OS

Resolution

These are rough estimates as exact measurements are difficult to obtain, because of the variability of the state of the overall system when tests are run.

Here, there's around a 5% PSA overhead reduction with the Volume and Extent collection off - meaning, for example, 10% with Volume and Extent collection off, and 10.5% with Volume and Extent collection on.