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Virtual Event | September 15-16, 2021
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Wednesday, September 15 • 11:30 - 11:55
Towards a More Efficient Synchronization in KVM - Wanpeng Li, Tencent Cloud

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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 discuss lost opportunities in vCPU boost, vCPUs stacking, and RCU-Reader Preemption Problem in VMs etc. Let's have a look at their mitigations.
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 →

Towards a More Efficient Synchronization in KVM pdf
Wednesday September 15, 2021 11:30 - 11:55 UTC
TBA
  KVM Track 1
  • Presentation Slides Attached Yes