title: Why the CPU usage of a GKE Workload is not equal to the sum of the CPU usage of its pods?
body: <p>I'm trying to figure out why a GKE "Workload" CPU usage is not equivalent to the sum of cpu usage of its pods.</p>
  
  <p>Following image shows a Workload CPU usage.</p>
  
  <p><a href="https://i.stack.imgur.com/b45rT.png" rel="nofollow noreferrer">Service Workload CPU Usage</a></p>
  
  <p>Following images show pods CPU usage for the above Workload.</p>
  
  <p><a href="https://i.stack.imgur.com/pPptu.png" rel="nofollow noreferrer">Pod #1 CPU Usage</a></p>
  
  <p><a href="https://i.stack.imgur.com/UBbEG.png" rel="nofollow noreferrer">Pod #2 CPU Usage</a></p>
  
  <p>For example, at 9:45, the Workload cpu usage was around 3.7 cores, but at the same time Pod#1 CPU usage was around 0.9 cores and Pod#2 CPU usage was around 0.9 cores too. It means, the service Workload CPU Usage should have been around 1.8 cores, but it wasn't.</p>
  
  <p>Does anyone have an idea of this behavior?</p>
  
  <p>Thanks.</p>