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Re: MYSQL 5.5 Performance issue
Posted by: Øystein Grøvlen
Date: October 19, 2017 03:21AM

Hi,

In order to help you, I think we need to see the actual query plans for the partitioned and non-partitioned cases. Is it using the same index in both cases?

The execution may be faster the second time because one may have to fetch less data from disk since the data may be left in the buffer pool since the first execution.

Øystein Grøvlen,
Senior Principal Software Engineer,
MySQL Group, Oracle,
Trondheim, Norway

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