Oracle ZFS Storage Appliance: Performance Issues - IO Reads with SSD cache devices (Doc ID 2224745.1)

Last updated on MARCH 29, 2017

Applies to:

Oracle ZFS Storage ZS3-2 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7420 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7320 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS3-4 - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS4-4 - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

Overall performance can be slower than expected on systems using SSD cache devices.
For example, nightly batch-jobs are taking longer after system was upgraded from 2013.06.05.4.0,1-1.7 to 2013.06.05.4.2,1-1.1.

Cause

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