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Offloaded smart scan performance is incorrectly throttled on Extreme Flash storage servers (Doc ID 2619367.1)

Last updated on DECEMBER 18, 2019

Applies to:

Oracle Exadata Storage Server Software - Version and later
Information in this document applies to any platform.


Due to bug 30492121, large I/Os on Extreme Flash storage servers are incorrectly throttled, which can result in significant performance impact to smart scan throughput.  To determine if you are experiencing this issue, run script from <Document 1337265.1> on each storage server to identify if all storage servers are experiencing large I/O queue waits greater than 10ms.

For example, the following dcli command will run on each storage server and show cases where Large I/O queue time exceeds 10ms.



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