~/talk

Kubevirt and the Cost of Containerizing VMs

on YouTube 19m
Talkat KVM Forum 2021 · 2021-09-15..09-16· [kubernetes]

speakers

name:Guoqing Li
links:none on file
name:Dario Faggioli
speakerdeck:dfaggioli

resources

video:https://youtu.be/x_czS9Iuo2o
slides:none on file

summary

Benchmarks run on a single server with 32 physical cores, Ubuntu host and guest images (OpenSUSE Leap 15.2) compare KVM (libvirt/QEMU built from source) and KubeVirt 0.44 with QEMU 5.2 and libvirt7. Experiments use 1‑vCPU and 4‑vCPU VMs, 8 GiB RAM, mmtests/NAS/STREAM/iozone and stress workloads, toggling vCPU pinning, virtual topology, hugepages and native IO. Perfect guest→host topology mapping consistently gives best throughput and latency; KubeVirt suffers large losses when Kubernetes CPU manager creates mismatched pinning; under high host load differences largely disappear.

AI-written summary · about

chapters (8)

  1. 0:00Introduction
  2. 0:54Overview
  3. 1:21What is Kubevirt
  4. 2:35Experimental setup
  5. 6:00Improved performance
  6. 12:34Benchmarks
  7. 15:41Firm Bench
  8. 17:46Conclusion

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