The Performance Diagnostic Tool (PDT) is a tool available in operating system version 4. PDT collects configuration and performance information and attempts to identify potential problems, both current and future.
PDT is an optionally installable component of the Base Operating System. Its name is bos.perf.diag_tool. After PDT has been installed, it must be activated with the /usr/sbin/perf/diag_tool/pdt_config command. This causes appropriate entries to be made in the crontab file, which causes PDT to run periodically, recording data and looking for new trends.
In assessing the configuration and the historical record of performance measurements, PDT attempts to identify:
PDT is described in detail in Chapter 13. Using Performance Diagnostic Tool (PDT).