Methods and arrangements to enhance a downbound path

摘要

Embodiments of the invention may monitor or manage the number of retries sent to a node by reserving an entry or path to an outbound port when the node is starved. Some embodiments associate a number of retries with a node in a buffer. Several embodiments compare the number of retries associated with the node against a retry limit to trigger reservation of an entry in a queue. Many embodiments may reserve the entry after the number of retries reaches or surpasses the retry limit. Further embodiments provide a count controller to count the number of retries and a retry controller, responsive to the count controller, to reserve a path to an outbound port. Other embodiments prevent transactions from one node from transmitting to an outbound port via a reserved path when the number of retries for another node is near or approaches the retry limit.