Chapter 1: Overview › › Performance Manager

Performance Manager

The Performance Manager makes recommendations for improving system performance. It does this by analyzing system data through the application of expert system technology, identifying specific conditions causing performance degradation, and presenting detailed evidence to support its conclusions. It also provides real-time displays of performance data using either DECwindows Motif or character cell displays. The user can interactively view and investigate system performance problems and resource usage. The following functions are included in the Performance Manager:

• Performance knowledge base and rules compiler
• Performance analysis and reports
• Real-time displays of performance data
• Graphing
• Data Exporting facility
• System resource limitations identified when they exist for the workload
• System parameter settings identified that may be adding to system overhead or degrading system performance
• Trends evaluated in system performance
• Effects of changes in workload and configuration characteristics evaluated

To deal with system performance effectively you must understand the workload and the capabilities and limitations of system resources. Generally, any attempt to improve system performance requires specific performance goals stated in measurable terms.