Simple liveness protocol using programmable network interface cards

摘要

A method and system for determining liveness of targets within a metaserver environment utilizing programmable network interfaces. The network interface has access to the associated target computer's processor and memory. A memory location on the target is allocated to storing an internal liveness parameter. The parameter increases when the computer system is making forward progress or operating. The MetaServer stores an initial parameter value of the target when it activates the target. After a pre-selected period, the network interface of the target accesses the associated memory location and provides the current value of the parameter to the MetaServer. When the now value is larger than the previously stored value, the target is assumed to be live.