Dipartimento di Ingegneria informatica, automatica e gestionale

In this paper, we propose and report a study of a low latency resource sharing protocol for Fog Computing. The protocol has its root in the power-of-random choices family of randomization protocol. The protocol, dubbed $LL_g(T)$ is designed to cope with a not homogeneous set of nodes and dealing with a communication latency comparable with the task execution, a characteristic of time-constrained applications supported by this service delivery model. The protocol allows to determine when a task can be moved from the origin fog node that receives the task to another node, where it can be executed faster. This task handoff is controlled via a threshold T. The remote node is selected uniformly at random.