Integrated control of matching delay and CPU utilization in information dissemination systems

The demand for high performance information dissemination is increasing in many applications, such as e-commerce and security alerting systems. These applications usually require that the desired information be matched between sources and sinks based on established subscriptions in a timely manner while a maximal system throughput be achieved to find more matched results. Existing work primarily focuses on only one of the two requirements, either timeliness or throughput. This can lead to an unnecessarily underutilized system or poor guarantees on matching delays. In this paper, we propose an integrated solution that controls both the matching delay and CPU utilization in information dissemination systems to achieve bounded matching delay for high-priority information and maximized system throughput in an example information dissemination system. Our solution is based on optimal control theory for guaranteed control accuracy and system stability. Empirical results on a physical testbed demonstrate that our controllers can guarantee the timeliness requirements while achieving maximized system throughput.