Re: new database server build - sanity check
- From: "Rich Jesse" <rjoralist2@xxxxxxxxxxxxxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 29 Jan 2013 09:22:49 -0600 (CST)
Mark writes:
> - ZFS can push the kernel CPU utilisation up when writing - during periods
> of intense writing..ie..RMAN backup..we can see the kernel CPU utilisation
> going up to 40% so you need to allow for this additional overhead.
Are you sure the extra CPU is due to ZFS overhead? We have the same on AIX
and JFS2. I reasoned that it was just the RMAN compression, which should be
CPU intensive.
Rich
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