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InnoDB Buffer Pool Instances is too small

If you are using MariaDB/MySQL 5.5 and newer you should use several InnoDB Buffer Pool Instances for performance reasons.
Some rules to size InnoDB Buffer Pool instances are:

  • One InnoDB Buffer Pool Instance should be at least 1 Gibyte in size (innodb_buffer_pool_size / innodb_buffer_pool_instances >= 1 Gib).
  • InnoDB Buffer Pool Instances you can set equal to the number of cores of your machine.