3.2. Measurement

The next phase of the performance management methodology involves measuring actual system or application performance. For this phase, performance tools are used to perform the data collection and presentation.

Measurement is based upon the answers to several interrelated questions that must be answered before any data is collected.

  • Which performance tools are available?

  • What is the purpose of the measurement?

  • Is the measurement baseline-or crisis-oriented?

  • How long should the data be collected, and at what intervals?

  • What data metrics are to be collected?

  • How well are the metrics documented?

  • How accurate are the data presented by the tool?

  • Are certain system resources already saturated?

  • How do these measurements relate to the organization's ...

Get HP-UX 11i Tuning and Performance now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.