System properties are available to applications, and help provide information about the runtime environment.
If your application is running within the IBM® WebSphere Real Time for RT Linux® runtime, and was started with the -Xrealtime option, the com.ibm.jvm.realtime property has the value "hard".
If your application is running within the IBM WebSphere Real Time for RT Linux runtime, but was not started with the -Xrealtime option, the com.ibm.jvm.realtime property is not set.
If your application is running within the IBM WebSphere Real Time runtime, the com.ibm.jvm.realtime property has the value "soft".