Reconfigurable Scheduling of Long Running Objects

摘要

We employ the new term reconfigurable scheduling to describe the capability of checkpointing or suspending an already scheduled and running task and its subsequent restart. It is a particularly useful feature of a scheduling system in a long running middleware environment that long running objects can be suspended and later resumed later without having to be completely restarted with an associated waste of compute cycles. We have experimented with the serialisation and rnulti threading capabilities of the Java runtime environment in support of reconfigurable scheduling. We describe a model for computing the savings in efficiency for scheduling long running tasks under such an environment. We also discuss the potential for real time scheduling of tasks in a middleware environment when reconfigurable scheduling is available.