US Patent 7962615 Multi-system deadlock reduction

Method, system, and computer program embodiments for reducing deadlock in multi-system computing environments are provided. A set of default, current wait times is initialized for resource requests of each of a plurality of resources. A plurality of resource holders and resource waiters is monitored within an address space. If one resource holder of the plurality of resource holders of one of the plurality of resources is determined to be one resource waiter on another of the plurality of resources, a current wait time for the one resource holder is incremented and a deadlock indicator for both the one resource holder and the one resource waiter is activated. Following expiration of a predefined interval, the plurality of resource holders and resource waiters are parsed through to determine an original resource holder, indicating a system deadlock. The resource holder associated with the system deadlock having a lowest current wait time is restarted.