Using the Engineering Page › Use the Performance Maps › Use Server Maps › Performance Indicators

Performance Indicators

A server is composed of these subsystems:

• CPU
• Memory
• I/O (network and disk)

When a subsystem is substantially taxed by an application, the users notice a decrease in performance.

An increase in CPU utilization could indicate many transactions, large queries, other processes unrelated to applications being monitored, TCP checksum calculations, and so forth.

An increase in memory utilization might indicate large data sets resident in memory, increases in the number of users or sessions, increases in the number of processes, failure to de-allocate memory (memory leak), and so forth.

An increase in I/O indicates increases in data writes to disk or network, increases in the number of users or sessions, memory pages to and from disk, and so forth.