Performance
As you can imagine, with any telco-based cloud, network performance is paramount, specifically high-performance packet processing in and out of a VM to the larger network. One of the ways this can be accomplished is to give the VM direct access to the network through SR-IOV. In addition, Intel's DPDK-Accelerated Open vSwitch enables superfast packet processing and a multiqueue vhost-user with accelerated virtual switches. Both SR-IOV and DPDK are supported in OpenStack Neutron, and they are being used successfully by multiple large telcos. Similarly, having the ability to specify vCPU topology across cores, pin vCPUs to NUMA boundaries, and enable huge pages are also available in Nova. For more information on these optimizations, ...
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