Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

Would performing daily optimizations of tables increase performance for MySQL and InnoDB? I have never did this before, but I have seen this module for Drupal, and it looks promising.

PS: As I learned, OPTIMIZE TABLE liberates overhead. However, I double checked the overhead column in mysql and it is all empty for my innodb tables ... So, I guess this may not be necessary.

share|improve this question
up vote 4 down vote accepted


Doing OPTIMIZE TABLE mydb.mytable; performs two basic operations

ANALYZE TABLE mydb.mytable;

This definitely cleans up table fragmentation and computes fresh statistics for indexes


Doing OPTIMIZE TABLE mydb.mytable; performs two basic operations

ALTER TABLE mydb.mytable ENGINE=InnoDB;
ANALYZE TABLE mydb.mytable;

While this eliminates fragmentation, ANAYLZE TABLE is complete useless for InnoDB. I wrote about this a long time ago:

If your data growth rate is very small (or in other words, your dataset stays basically the same size for months at a time), then defragmenting tables would just be overkill. You should probably focus on tuning InnoDB's other aspects (See my Aug 04, 2011 post: Optimizing InnoDB default settings)

I also have posts in the Drupal StackExchange on opimizing MySQL

share|improve this answer

For it worth : I"ve ran optimize table on the main tables of a database who works under heavy load. The main tables have been under great load of inserts/updates/deletes. The optimize reduced the table sizes by 90% and improved the system performance by more than twice !

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.