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October 24-26, 2018 - Edinburgh, Scotland, UK
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Thursday, October 25 • 14:45 - 15:15
Torwards a More Scalable KVM Hypervisor - Wanpeng Li, Tencent Cloud

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Torwards a more scalable KVM hypervisor(Wanpeng Li) - The kvm hypervisor is at the core of cloud computing, Virtual Machine based approaches to workload consolidation, as seen in IaaS cloud as well as datacenter platforms, have long had to contend with performance degradation caused by synchronization primitives inside the guest environments. These primitives can be affected by virtual CPU preemptions by the host scheduler that can introduce delays that are orders of magnitude longer than those primitives were designed for. In this presentation, Wanpeng Li will introduce Paravirtual TLB Shootdown which can mitigate TLB Shootdown Preemption issue. In addition, he will also introduce Exitless IPIs to scale large VMs, and disable mwait/hlt/pause vmexits to improve latency for dedicated instances.

avatar for Wanpeng Li

Wanpeng Li

Linux Kernel Contributor, Tencent Cloud
Wanpeng Li is a 9 years experienced Linux kernel/virtualization developer who works in Tencent Cloud currently. He mainly focuses on KVM, scheduler and memory management. In KVM, he contributes a lot of features to improve performance and stability. He has worked in the IBM LTC kernel... Read More →

Thursday October 25, 2018 14:45 - 15:15 BST
Sidlaw Auditorium