Using the zIIP processor by the Control-D Application Server

The ZIIPXBMA parameter is provided in the IOAPARM member for offloading Control-D Application Server and Control-D File Transfer option (FTO) I/O workloads to zIIP with XBM (Extended Buffer Manager). The default is Y, that the I/O workloads are offloaded to zIIP with XBM.

The XBM modify command allows the Control-D Application Server to activate the offloading of eligible I/O workloads from general purpose processors to zIIP processors with XBM. This way XBM address space can be started after INCONTROL address spaces, without requiring the INCONTROL address spaces to be restarted.

For the Control-D Application Server, the XBM modify operator command syntax is as follows:

where nn is the decimal sequential ASID number of the Control-D Application Server address space to which the modify command is submitted. The modify command is broadcast to all active Application Server address spaces if the ASID number ‘=nn’ is omitted.