title: Kubernetes: High CPU usage
body: <p>I am using Rancher. I have deployed a cluster with 1 master &amp; 3 worker nodes.
  All Machines are VPSes with 2 vCPU, 8GB RAM and 80GB SSD.</p>
  
  <p>After the cluster was set up, the CPU reserved figure on Rancher dashboard was 15%.  After metrics were enabled, I could see CPU used figures too and now CPU reserved had become 44% and CPU used was 16%. I find those figures too high. Is it normal for Kubernetes a cluster to consume this much CPU by itself?</p>
  
  <p><a href="https://i.stack.imgur.com/YcFb9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YcFb9.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/kspQt.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kspQt.png" alt="enter image description here"></a></p>
  
  <p>Drilling down into the metrics, if find that the networking solution that Rancher uses - Canal - consumes almost 10% of CPU resources. Is this normal?</p>
  
  <p><a href="https://i.stack.imgur.com/PRFH6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PRFH6.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/nChGs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nChGs.png" alt="enter image description here"></a></p>
  
  <p>Rancher    v2.3.0
  User Interface  v2.3.15
  Helm    v2.10.0-rancher12
  Machine     v0.15.0-rancher12-1</p>
  
  <p><a href="https://i.stack.imgur.com/fne9L.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/fne9L.png" alt="enter image description here"></a></p>