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Update INTERNALS.md

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Adding information about InnoDB checks
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Jean-Marie Renouard 2015-08-19 10:11:01 +02:00
parent 6c859f564c
commit d5fad777da
1 changed files with 17 additions and 2 deletions
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INTERNALS.md
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@ -45,6 +45,7 @@
## MySQLTuner Server version checks ## MySQLTuner Server version checks
* EOL MySQL version check * EOL MySQL version check
* Currently MySQL < 5.1 are EOF considerated.
## MySQL Storage engine general information ## MySQL Storage engine general information
@ -87,7 +88,21 @@
## MySQLTuner InnoDB information ## MySQLTuner InnoDB information
* TODO * InnoDB Buffer Pool Size
* If possible, innodb_buffer_pool_size should be greater data and index size for Innodb Table
* Innodb_buffer_pool_size should around 75 to 80 % of the available system memory.
* InnoDB Buffer Pool Instances
* MySQL needs 1 instanes per 1Go of Buffer Pool
* innodb_buffer_pool instances = round(innodb_buffer_pool_size / 1Go)
* innodb_buffer_pool instances must be equals or lower than 64
* InnoDB Buffer Pool uUsage
* If more than 20% of InnoDB buffer pool is not used, MySQLTuner raise an alert.
* InnoDB Read effiency
* Ratio of read without locks
* InnoDB Write effiency
* Ratio of write without locks
* InnoDB Log Waits
* Checks that no lock is used on Innodb Log.
## MySQLTuner ARIADB information ## MySQLTuner ARIADB information
@ -95,4 +110,4 @@
## MySQLTuner MYISAM information ## MySQLTuner MYISAM information
* TODO * TODO