NetKernel: Making Network Stack Part of the Virtualized Infrastructure

This paper presents a system called NetKernel that decouples the network stack from guest virtual machine and offers it as an independent module. represents new paradigm where can be managed part of virtualized infrastructure. It provides important efficiency benefits: By gaining control visibility stack, operators perform management more directly flexibly, such multiplexing VMs running different applications to same module save CPU cores, enforcing fair bandwidth sharing. Users also benefit simplified deployment better performance: For example mTCP deployed without API change support nginx natively, shared memory networking readily enabled improve performance colocated VMs. Testbed evaluation using 100G NICs shows preserves scalability both kernel userspace stacks, isolation current architecture.