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AIX 5L Practical Performance Tools and Tuning Guide by IBM Redbooks

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3.1. The topas command

The topas command is a performance monitoring tool that is ideal for broad spectrum performance analysis. The command is capable of reporting on local system statistics such as:

  • CPU usage

  • CPU events and queues

  • memory and paging use

  • disk performance

  • network performance

  • WLM partitioning

  • NFS statistics

Topas can report on the top hot processes of the system as well as on Workload Manager (WLM) hot classes. The WLM class information is only displayed when WLM is active. The topas command defines hot processes as those processes that use a large amount of CPU time. The topas command does not have an option for logging information. All information is real time.

The topas command is located at /usr/bin/topas and is part of the bos.perf.tools ...

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