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.