Fetch your mysql configuration

You want to check some environment variables values for your current setup. Log into mysql and type something like

  variable_value AS innodb_log_buffer_size_bytes,
  ROUND(variable_value / (1024*1024)) AS innodb_log_buffer_size_mb
FROM information_schema.global_variables
WHERE variable_name LIKE  'innodb_log_buffer_size';

you will get nice info of what is current setting, so you can change it for optimal value.