Input-queued switches in heavy traffic
Abstract.
Heavy traffic theory is an important tool in understanding how to control
queueing networks; it shows promise too in understanding the performance
of input-queued switches. I will illustrate this by describing the idea of
state space collapse and showing how it comes about under the
maximum-weight matching algorithm. This can be used to explain why some
weight functions give better performance than others, and perhaps to
calculate drop probabilities.