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I have a table that's always used 24/7. There is always a stream of update and/or insert of 10-20 rows per 30 to 60 seconds.

As stated on the MYSQL documentation: "After doing substantial insert, update, or delete operations on an InnoDB table that has its own .ibd file because it was created with the innodb_file_per_table option enabled. The table and indexes are reorganized, and disk space can be reclaimed for use by the operating system."

I am not sure if what im doing with the table is "substantial" enough for me to optimize it regulary.

Also, what is the impact on performance with doing optimize table regulary?

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In almost all situations, OPTIMIZE TABLE is a waste of time and effort. So, in my opinion, "substantial" is really, really, big.

10-20 changes per minute -- not very busy. Not substantial.

  • does a hundred thousand data count as substantial? or maybe a million? – Christian Burgos Sep 14 '15 at 4:17
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    Per minute, yes. Per table, no. Please provide SHOW CREATE TABLE and SHOW TABLE STATUS; these may give clues to discuss. – Rick James Sep 14 '15 at 15:26

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