Processing resource allocation within an integrated circuit supporting transaction requests of different priority levels

摘要: An integrated circuit 2 includes a plurality of transaction sources 6, 8, 10, 12, 14, 16, 18, 20 communicating via ring-based interconnect 30 with shared caches 22, 24 each having an associated POC/POS 30, 34 and serving as request servicing circuit. The circuits have set processing resources 36 that may be allocated to different transactions. These either dynamically or statically. Static allocation can made in dependence upon selection algorithm. This algorithm use quality service value/priority level one its input variables. A starvation ratio also defined such lower priority levels are forced selected if they starved for too long. programmable mapping between values levels. maximum number programmed.