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NUMA-Aware Open vSwitch w/ DPDK for High-Performance NFV Platform by Kazuki Hyoudou, Fujitsu

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Published on Nov 23, 2016

NUMA-Aware Open vSwitch w/ DPDK for High-Performance NFV Platform- Kazuki Hyoudou, Fujitsu

The number of Virtual Machines (VMs) which can be executed in a box is one of the most important characteristics for the NFV platform.
Most easy way to increase VMs in a box is to use multi-socket server employing Non-Uniform Memory Access (NUMA) architecture.
It, however, needs to overcome the well-known issue of the significant performance decrease caused by resource placements in the memory of NUMA nodes.

In the current implementation of Open vSwitch netdev-DPDK, the structure for DPDK ports are allocated only on the memory of NUMA node to which NIC is connected.
Thus, if the VM with virtio-net is running on a NUMA node different from the node to which NIC is connected, its throughput decreases significantly.

We propose a NUMA-aware Open vSwitch w/ DPDK for High-Performance NFV Platform. In our proposal, the NIC directly accesses to the memory of NUMA node on which
VM is running by using its DMA. This significantly reduces the performance decrease caused by the resource replacement mentioned above.

We will present our trial implementation for NUMA-aware Open vSwitch w/ DPDK and preliminary evaluation results.

About Kazuki Hyoudou
Kazuki Hyoudou received his Ph.D in Engineering from the University of Electro-communications, Tokyo, Japan in 2005. He joined Fujitsu Laboratories Ltd., Kawasaki, Japan in 2008. He is currently engaged in research on network virtualization, NFV acceleration and offloading as a Researcher.

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