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Anybody has a hint? I didn't change anything in the machine (except for the security updates), and the sites hosted there didn't suffer a significant change in connections.

May be Google changed something in their infrastructure? Coincidentally, it was an issue with the Cloud DNS ManagedZone these days: they charged me with $ 920 for half month usage, and it was an error (they counted thousands of weeks of usage too) so they recently changed back to $ 0,28. May be there was some process that indeed used the Cloud DNS by error and thus consumed CPU power, and they corrected now?

I wish to know what is happening from someone that knows what going on in GC. Thank you.

Juan
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  • Did the security updates coincide with the start of lower CPU usage? Suspect the DNS charges are a simple billing error, not an indication of more DNS activity. – jarmod Jun 18 '16 at 15:17
  • Well, actually, not. There was no security updates before the lowering. Nobody else has seen something like that in their Compute Engine? – Juan Jun 21 '16 at 12:17
  • Mine is a g1-small instance with 1 shared CPU (Intel Haswell) and 1.7 GB of RAM – Juan Jun 21 '16 at 12:18

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CPU utilization reporting is now more accurate from a VM guest perspective as it doesn't include virtualization layer overhead anymore. It has nothing to do with Cloud DNS.

See this issue for some extra context: https://code.google.com/p/google-compute-engine/issues/detail?id=281

PrecariousJimi
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  • Thank you. That's the explanation I was looking for. I think that Google should have explained that to everyone. I had no clue about what's going on. I don't understand why someone has downvoted ny question. – Juan Jun 25 '16 at 15:15