Bhavesh Davda

Low Latency on vSphere at VMworld 2012

September 19, 2012

I was excited to have one of our partners, Mellanox, extend a special invitation for me to speak at their Expo booth during VMworld 2012 in San Francisco. They had allocated a 30 minute slot for a Theater Presentation and promoted my presentation via nice giveaways and postcards distributed in nearby VMworld hotels.

I used this opportunity to reiterate some of the messages from the OpenFabrics Alliance Workshop in Monterey in March 2012 and to report on further progress with the Office of the CTO’s explorations into supporting RDMA at various levels in the vSphere ESXi hypervisor.

In the first section of the presentation, I highlighted various use cases for RDMA in VMs hosted on ESXi, and three different options for accessing RDMA from VMs. One of the options highlighted was the vRDMA approach that we described in a recent blog/interview. I concluded with a performance characterization of the different options.

In the second section of the presentation, I explained how we can exploit the benefits of RDMA for ESXi hypervisor services, with performance numbers showing the benefits of accelerating vMotion over RDMA in a prototype based on vSphere ESXi 5.0.

I hope you’ll take some time to browse through the slides, and leave some comments on this post with your thoughts.

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Bhavesh Davda

Bhavesh Davda

Senior Engineer, Office of CTO

Bhavesh Davda is a senior engineer in the CTO Office at VMware. He is focused on enabling virtualization of real-time applications, low latency applications, high rate packet processing, high performance computing, SR-IOV and RDMA, which have historically been challenging to virtualize ... More

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