kube-proxy ipvs mode cpu too hight

[zhaogaolong]

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 :

[andrewsykim]

K8S version: 1.21.14

This is a very old version of Kubernetes, I suggest trying to upgrade. I don't recall the details, but we resolve several performance issues in the kube-proxy IPVS implementation several years ago.

[zhaogaolong]

Thank you for your response.

see that the moby/ipvs v1.1.0 version used by kubernetes v1.27.x, does it mean that k8s needs to be upgraded to version v1.27.x or above?
@andrewsykim