Enable XDP acceleration for Cilium KPR - Githubissues

cybozu-go / neco

Project Neco

https://app.zenhub.com/workspaces/neco-5ca28d055128c041a68c0a8f/boards

Apache License 2.0

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Enable XDP acceleration for Cilium KPR #2047

Open ysksuzuki opened 2 years ago

ysksuzuki commented 2 years ago

What

Enable XDP acceleration for Cilium KPR https://github.com/cybozu-go/neco/blob/6c2c6dadcc78a9e9caabd8345e4508718ee89e38/cilium/pre/values.yaml#L48

kernel 5.15.38 includes virtio-net bug fix, so now we can enable the XDP acceleration. https://lwn.net/Articles/894357/

Nikolay Aleksandrov (2):
      virtio_net: fix wrong buf address calculation when using xdp

How

Make sure that the XDP acceleration works on dctest with the latest stable Flatcar
Check if the XDP acceleration can be properly configured on physical servers before applying stage0
Evaluate it for a while on stage0 and make sure if it works stably, and then we'll be able to release it on production

Checklist

[ ] Finish implementation of the issue
[ ] Test all functions
[ ] Have enough logs to trace activities
[ ] Notify developers of necessary actions

ysksuzuki commented 1 year ago

Rolling restart Cilium with XDP acceleration enabled disrupts in-cluster connectivity. We need to investigate the cause in an environment where the disruption doesn't affect tenant users.