# Key Efficiency

**URL:** <https://forums.percona.com/t/key-efficiency/1464>\
**Category:** Other MySQL® Questions\
**Created:** [August 4, 2010, 12:02pm UTC](https://forums.percona.com/t/key-efficiency/1464 "2010-08-04T12:02:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rwxrwxrwx](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/rwxrwxrwx/32/832_2.png) [@rwxrwxrwx](https://forums.percona.com/u/rwxrwxrwx)\
**Post date:** [August 4, 2010, 12:02pm UTC](https://forums.percona.com/t/key-efficiency/1464/1 "2010-08-04T12:02:33Z")

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Does anybody have some insight into the Key Efficiency graph within MySQL Workbench? What is an acceptable percentage range? And what config values would be used to alter the results?