Use the Character-Cell Real-time Display › Evaluate Performance Using the Investigate Displays

Evaluate Performance Using the Investigate Displays

The System and Load Balance displays provide graphic information to determine which of the three main system resources (memory, I/O, or CPU) is a limitation. To investigate a limitation in more detail, use the Memory, I/O, and CPU displays.

Note: For a detailed description of a system tuning methodology, see HP's OpenVMS Performance Management guide.

When determining a limitation in a main resource, investigate the resources in the following order:

1. Memory
2. I/O
3. CPU

The order is important because memory limitations cause paging and swapping, which lead to I/O and CPU problems.

Begin your tuning investigation by using the System Overview or Load Balance displays, as shown in the following screens:

ReGIS System Overview Display

System Load Balance Display (ReGIS)

LOAD_BALANCE Display (ANSI)