"Hybrid" Nesting: KVM on Hyper-V by Vitaly Kuznetsov & Tianyu Lan

This may come as a surprise but it is already possible to run nested KVM inside Hyper-V VMs and this includes several instance types on Azure. Such workloads, however, may not always perform very well. Some limitations come from x86 architecture and conceptual differences between KVM and Hyper-V, other issues could be dealt with within KVM. In this talk we will go through different performance bottlenecks of nested KVM-on-Hyper-V deployments. The presentation will highligh recent developments in the area: Englightened VMCS, Enlightened MSR-Bitmap, stable clocksource and others. We will also try to describe our work in progress and possible future improvements for nested KVM in general and KVM on Hyper-V in particular.

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Vitaly Kuznetsov
Senior Software Engineer
Red Hat

Vitaly works at Red Hat Virtualization Engineering group, his job duties include supporting Linux as a guest on 3rd party hypervisors. He mainly contributes to Linux kernel and related projects. His recent public speaking experience includes events like LinuxCon 2017 China, FOSDEM 2018, DevConf 2016 and 2018, Xen Project Developer Summit 2015 and others.

Tianyu Lan
Senior Software Engineer, Enterprise Open Source Group
Microsoft

Tianyu is Senior Software Engineer in Enterprise Open Source Group at Microsoft. He focuses on the performance optimization of Linux VMs on Hyper-V. Previously, Tianyu worked on ACPI, power management, KVM and Xen opens source projects at Intel Open source technology center. He gave “High-performance Virtualization for HPC Cloud on Xen” talk during Xen Project Developer Summit 2016.

Видео "Hybrid" Nesting: KVM on Hyper-V by Vitaly Kuznetsov & Tianyu Lan канала KVM Forum