Configuring your environment
Although some configuration options must be set before you run your Java™ application, many options are configured when you launch the runtime environment from the command line. Configuration options that must be set before you start your application include operating system resources and hardware components that can be exploited by applications.
- To ensure that your operating system allocates sufficient resources for your application, set suitable values for BPXPRM parameters and Language Environment runtime options. If your application allocates a large amount of memory and frequently accesses that memory, you might want to enable large page support on your system. For more information about all of these options, see Configuring your system in the OpenJ9 user documentation (except for information that is specific to 31-bit systems, which is in the sub-topics).
- To configure your system to use the SMC-R protocol to enable direct, high-speed, low-latency, memory-to-memory (peer-to-peer) communication, see Using Shared Memory Communications in the z/OS® Communications Server: IP Configuration Guide.