Why is MySQL InnoDB Insert Significantly Slower Than MyISAM?

Why is MySQL InnoDB insert so slow?

Inserting data into InnoDB tables can be significantly slower than into MyISAM tables, especially for large tables. This is due to the fundamental differences in their architectures.

InnoDB:

• Transactions: InnoDB supports transactions, ensuring data integrity and consistency. However, this comes at the cost of slower insert performance, as each insert triggers a commit to ensure persistence.

MyISAM:

• Non-transactional: MyISAM does not support transactions, making it faster for insertions. However, if an error occurs during insertion, data may be lost.

Solution:

To improve InnoDB insert performance, use explicit transactions:

1. Before the insert loop, execute START TRANSACTION;.
2. After the insert loop, execute COMMIT;.

This approach allows InnoDB to group multiple inserts into a single transaction, significantly reducing the number of commits and improving performance.

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