2009 09/02/2009 06/14/2009 52 The networking stack does not scale well with a single queue NIC on a multi-core system. The interrupt processing as well as the NAPI processing for a device, including protocol processing, are essentially single threaded on a CPU. In this talk we discuss a design that introduces parallelism in the networking receive path without the need for multi-queue NIC support. In essence this will emulate the capablities of hardware multi-queue NIC in that protocol processing of packets for different flows to be done in parallel. Applying this solution, we can show up to a 300% increase in the packets-per-second that can be handled with a single queue NIC. 06/14/2009