CPU waiting for I/O in Exadata Database Node

  • From: Ls Cheng <exriscer@xxxxxxxxx>
  • To: Oracle Mailinglist <oracle-l@xxxxxxxxxxxxx>
  • Date: Tue, 22 May 2018 19:28:14 +0200

Hi

I am observing quite high CPU waiting for I/O in Exadata Database Nodes
(vmstat output). but from iostat there no waits at all (which is obvious
since heavy I/O is done through infiniband).

Anyone know what can be the CPU waiting for?

Thanks

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