Memory

For a system to perform well, sufficient physical memory must be available for all processes running on the system (for example, TIBCO Enterprise Message Service™, Apache LDAP, as well as the ActiveMatrix BPM system and BPM nodes).

The main item to check for is that no swapping is taking place, or at least none that involves the ActiveMatrix BPM processes. Swapping to disk can cause a dramatic drop in performance, especially if memory is being swapped to slow disk systems, which are also being shared by the operating system, EMS, database, ActiveMatrix BPM, and so on.

The utility vmstat (http://www.linuxjournal.com/article/8178) or collectl can be used to monitor memory and swapping.

Example output of vmstat memory tool