Recently, network on chip (NoC) architectures are being

proposed for implementing multi-core systems for realtime

multi-media applications. The communication

traffic of those systems will be a mix of guaranteed

throughput (GT) and best effort (BE) traffic. GT traffic

not only lead to under-utilization of communication links

and routers, but also leads to degradation of QoS

parameters for BE traffic. We propose a dynamic routing

scheme for reducing jitter in the latency of BE traffic

affected by the GT traffic. Our results from modeling and

simulation indicate that a significant improvement in

jitter can be achieved.