## Script to read index sizes and calculate key buffer size

mysql -e "set @overhead = 5 / 100;

        select count(INDEX_LENGTH) as Indexes,

        sum(INDEX_LENGTH) as Total_Index_Length,

        floor(@overhead * 100) as PCT,

        floor(sum(INDEX_LENGTH)*@overhead) as Overhead,

        floor(sum(INDEX_LENGTH)*(1+@overhead)) as key_buffer_size

        FROM information_schema.TABLES WHERE ENGINE = 'MyISAM';"

## Example Output:

+---------+--------------------+------+----------+-----------------+

| Indexes | Total_Index_Length |  PCT | Overhead | key_buffer_size |

+---------+--------------------+------+----------+-----------------+

|     744 |            5775360 |    5 |   288768 |         6064128 |

+---------+--------------------+------+----------+-----------------+