Platform and engine tuning

Scan rate and I/O count affect the performance of an AppEngine. Faster scan rates result in a lower I/O threshold. In other words, the higher scan rate, the lower the I/O count that can be supported.

Decreasing the engine scan rate reduces the amount of event data that must be transmitted for the historian (if enabled), as well as system resources, such as CPU and memory.

For information about platform and engine tuning in redundant Application Server systems, see Tuning recommendations for redundancy in large SYSTEMS.