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.
The formula for calculating (Unit: Megabytes) virtual memory usage is as follows:
Virtual-memory-usage-of-J2EE-server = A + B + C + (D + 10) E + F + G
Table 5-29 List of values of the area size used by native programs
OS type | Value of area used (Unit: megabytes) |
---|---|
Windows | 300 |
AIX | 400 |
HP-UX | 400 |
Linux (x86) | 400 |
Linux (AMD64 & Intel EM64T) | 600 |