(z/OS® only)

Enables Java™ applications to run on IFAs if they are available.

z/OS V1R6 or later can run Java applications on a special-purpose assist processor called the System z™ Application Assist Processor (zAAP). zAAPs operate asynchronously with the general purpose processors to execute Java programming under control of the VM. The zAAP is also known as an IFA (Integrated Facility for Applications).

Only Java code and system native methods can be on IFA processors.


Setting Value Default
-Xifa:<value> on yes
force (obsolete)

Note: The force option is obsolete and should not normally be used. This option is superseded by the SYS1.PARMLIB(IEAOPTxx) PROJECTCPU=YES parameter, which is available on all supported levels of z/OS. Xifa:force can be used for testing purposes when a zAAP is not available, but can have a negative performance impact.