Virtual storage data processor with enhanced dispatching priority allocation of CPU resources

A computer system including system control software, said software including means for establishing virtual address spaces, each virtual address space having an associated address space control block (ASCB) and an assigned priority level, said system comprising:

• means for establishing a dispatchable unit of work in a resource manager's virtual address space in response to a work request from a service requestor virtual address space;
• means for creating an encoded ready work element (RWE) for said dispatchable unit of work, said RWE including a normal affinity field indicating said service requestor virtual address space, and a current affinity field initially set equal to the normal affinity field;
• means responsive to said work unit being ready for dispatch from said resource manager address space, for causing the RWE of said dispatchable unit to be added to a chained list from the ASCB that is associated with said service requestor virtual address space, if the current affinity field of said RWE indicates said ASCB;
• and
• dispatch means for examining ASCB's that indicate chained RWE's of dispatchable units, said examining occurring in order of priority of the associated virtual address space for each ASCB, whereby said dispatch means finds said RWE of said dispatchable unit at the priority of said service requestor virtual address space.

A computer system including system control software, said software including means for establishing address spaces, each established address space having an assigned priority, said system including service requestor and resource manager address spaces, said system performing the method comprising:

• establishing a dispatchable work unit in a resource manager address space in response to a work request from a service requestor address space;
• creating an encoded ready work element (RWE) for said dispatchable work unit, said RWE including an affinity field indicating said service requestor address space;
• creating an address space control block (ASCB) for each service requestor and resource manager address space, for chaining RWE's of dispatchable work units whose affinity fields indicate the respective ASCB that is associated with a said service requestor address space;
• and
• examining each said ASCB and enabling dispatch, for execution, of ready work units having RWE's chained therewith at the priority of the associated address space.