kube-proxy ipvs mode cpu too hight
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- Dominant language
- Go
- Stars
- 110
- Forks
- 39
- PR merge metrics
- No merged PRs in 30d
Description
hi:
Recently, it was found that the CPU usage of kube-proxy is high in ipvs mode, and the method of doCmdWithRespone found to be ipvs through pprof has a large latency, and I don't know if there is a solution.
K8S version: 1.21.14
kernel: 5.10.x
IPVS version: v1.2.1
pprof :
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First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start with the supplied pprof evidence and the doCmdWithRespone path related to kube-proxy IPVS mode, comparing its behavior with the stated Kubernetes, kernel, and IPVS versions. Determine the cause of the high CPU and command latency, then document or validate a solution with reproducible profiling results.
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Assessment
- Tech stack
- go, linux
- Domain
- networking
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100