5.3 Estimating virtual memory usage

This section describes how to estimate the virtual memory that is used. For details about the option for invoking JavaVM used in the formula for calculating the virtual memory usage, see 7.1.2 Configuring the memory space used in JavaVM and the JavaVM options.

Moreover, when you use the explicit management heap functionality, apart from the contents described here, you must provide the estimation of the memory size used by the explicit management heap functionality. For details on estimating the memory size used by the explicit management heap functionality, see 7.10. Explicit heap tuning.

Organization of this section
(1) Formula for calculating virtual memory usage
(2) Notes when calculating the virtual memory usage

(1) Formula for calculating virtual memory usage

The formula for calculating (Unit: Megabytes) virtual memory usage is as follows:

Virtual-memory-usage-of-J2EE-server = A + B + C + (D + 10) [Figure]E + F + G

Legend:

(2) Notes when calculating the virtual memory usage