3.3.1 The Java heap memory size
Determine the Java heap memory size for your system. Insufficient Java heap memory size could cause a lower transfer rate or an improper operation of the system during transfer over concurrent connections or during delivery of a large file. You can specify both initial and maximum sizes (in MB) for the Java heap memory. You must set the maximum size to a minimum of 1,024 MB, which is the default setting. You can estimate the preferred value for the maximum size by using the following calculation formula:
Maximum size ≥ default setting of 1,024 MB + (maximum number of concurrent connections × buffer size for transfer and reception)
For details about the maximum number of concurrent connections, see 3.3.4 Concurrent connections. For details about the buffer size for transfer and reception, see 3.3.8 Buffer size during transfer and reception.
We recommend that you specify the same size for both initial and maximum values. The following table describes the default settings.
|
Setting item |
Default value |
|---|---|
|
Initial size |
1,024 MB |
|
Maximum size |
1,024 MB |
The Java heap memory size is specified in environment setup after JP1/DH - Server installation.