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Thursday, October 26 • 3:00pm - 3:30pm
virtio: vhost Data Path Offloading Towards NFV Cloud - Cunming Liang, Intel

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VIRTIO as a para-virtualized device decouples VMs and physical devices. Friendly live-migration support makes it well recognized by the cloud networking. However, the north-south I/O throughput of VIRTIO doesn’t compare with SR-IOV.
The technical talk gives a practical proposal to address this by introducing a framework for vhost data path offloading. It essentially allows using HW device to offload the vring data path on the vhost side, without requiring the HW device being pass-thru to the guest. As a result, it achieves SR-IOV like performance with compatible live-migration support which makes it possible to upgrade a stock VM using virtio to a new HW accelerated platform transparently.
Steve is going to explain the mechanism under the hood, go through the detail proposal, introduce the benefits, and share the WIP patch work and figure out the minimum HW prerequisite for doing this.


Thursday October 26, 2017 3:00pm - 3:30pm
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Attendees (11)