CPU waiting for I/O in Exadata Database Node

From: Ls Cheng <exriscer_at_gmail.com>
Date: Tue, 22 May 2018 19:28:14 +0200
Message-ID: <CAJ2-Qb9sD3kG8HOi8OFnpNY2zO6qr9n_Sis_=K1tbrx2oXVjHA_at_mail.gmail.com>

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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Received on Tue May 22 2018 - 19:28:14 CEST

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