Virtual Network Functions as Real-time Containers in Private Clouds

This paper presents preliminary results from our on-going research for ensuring stable performance of co-located distributed cloud services in a resource-efficient way. It is based on using a real-time CPU scheduling policy to achieve a fine-grain control of the temporal interferences among real-time services running in co-located containers. We present results obtained applying the method to a synthetic application running within LXC containers on Linux, where a modified kernel has been used that includes our real-time scheduling policy.