Display metric values

The onperf utility displays database server metrics obtained from shared memory.

When onperf starts, it activates the following processes:
  • The onperf process. This process controls the display of onperf tools.
  • The data-collector process. This process attaches to shared memory and passes performance information to the onperf process for display in an onperf tool.
An onperf tool is a Motif window that an onperf process manages, as Data flow from shared memory to an onperf tool window shows.
Figure 1. Data flow from shared memory to an onperf tool window
Data flows from shared memory to the onperf data-collector process, then to the onperf process and then to the onperf tool.