Rob Scott af56f25797 Only detecting stale connections for UDP ports in kube-proxy. ...

The detectStaleConnections function in kube-proxy is very expensive in
terms of CPU utilization. The results of this function are only actually
used for UDP ports. This adds a protocol attribute to ServicePortName to
make it simple to only run this function for UDP connections. For
clusters with primarily TCP connections this can improve kube-proxy
performance by 2x.

2019-09-25 17:48:54 -07:00

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