Optimizing MySQL performance – configuration

MySQL has hundreds of settings that can be configured. Version 5.7 ships with many improvements in default configuration values and requires far fewer changes. In this recipe, we will look at some of the most important parameters for tuning MySQL performance.

Getting ready

You will need access to a root account or an account with sudo privileges.

You will need access to a root account on the MySQL server.

How to do it…

Follow these steps to improve MySQL configuration:

1. First, create a backup of the original configuration file:

   $ cd /etc/mysql/mysql.conf.d
   $ sudo cp mysqld.cnf mysqld.cnf.bkp
   

2. Now open my.cnf for changes:

   $ sudo nano /etc/mysql/mysql.conf.d/mysqld.cnf
   

3. Adjust the following settings for your InnoDB tables:

   innodb_buffer_pool_size = 512M  # around 70% of total ram
   innodb_log_file_size  = 64M
   innodb_file_per_table = 1
   innodb_log_buffer_size = 4M
   

4. If you are using MyISAM tables, set the key buffer size:

   key_buffer_size = 64M
   

5. Enable the slow...