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Thursday, October 29 • 10:00 - 10:30
KVM Latency Performance Tuning - Wanpeng Li, Tencent

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The KVM hypervisor is at the core of cloud computing, some customers from financial, online shopping, and gaming etc are sensitive to latency, IPI and Timer cause the main MSRs write vmexit in cloud environment, preempted vCPU also blocks synchronized multicast function call IPIs or worse Lock Waiter Preemption Issue. In this presentation, we will introduce some features that can reduce latency in kvm hypervisor, including Fast IPI delivery, Fast timer emulation, Boost preempted vCPU, and so on. We will also introduce other further work to improve the latency on AMD.
Speakers
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 →

KVM Latency and Scalability Performance Tuning pdf
Thursday October 29, 2020 10:00 - 10:30 GMT
KVM Theater
  KVM Forum, KVM