International Business Machines Corporation

Paul Johnson

Ian J Mitchell

George M Burgess

Colin R Penfold

A method, system and computer program product for handling a unit of work in a transaction processing system, in which the system comprises one or more production regions operating minimal or no diagnostic functions and one or more diagnostic regions operating maximal or full diagnostic functions. A unit of work is received, which is routed to a production region. After receiving a notification that the work has failed, the work is routed to a diagnostic region.

Providing automatic retry of transactions with diagnostics

A workload manager is operable with a distributed transaction processor having a plurality of processing regions and comprises: a transaction initiator region for initiating a transaction; a transaction router component for routing an initiated transaction to one of the plurality of processing regions; an affinity controller component for restricting transaction routing operations to maintain affinities; the affinity controller component characterized in comprising a unit of work affinity component operable with a resource manager at the one of the plurality of processing regions to activate an affinity responsive to completion of a recoverable data operation at the one of the plurality of processing regions.

Transactional updating in dynamic distributed workloads

A workload manager is operable with a distributed transaction processor having a plurality of processing regions and comprises: a transaction initiator region for initiating a transaction; a transaction router component for routing an initiated transaction to one of the plurality of processing regions; an affinity controller component for restricting transaction routing operations to maintain affinities; the affinity controller component characterised in comprising a unit of work affinity component operable with a resource manager at the one of the plurality of processing regions to activate an affinity responsive to completion of a recoverable data operation at the one of the plurality of processing regions.

Embodiments of the invention relate to multiprocessing systems. An aspect of the invention concerns a multiprocessing system that comprises a hardware control component for selecting a hardware management action responsive to a hardware policy and a virtualization component for presenting virtual hardware resources to a software task execution environment. The system may further comprise a software workload management component for controlling at least one running software task and routing at least one new software task using the virtual hardware resources; and a communication component for signaling the software workload management component to perform a software management action in compliance with the hardware management action. The hardware policy may be a hardware power management policy, and the software management action may comprise quiescing the at least one running software task or routing the new software tasks to a different software task execution environment.

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Hampshire, United Kingdom

Paul Johnson