This topic describes how to disable slow query log for a destination ApsaraDB RDS for MySQL instance to improve the performance of data migration. We recommend that you disable slow query log if the instance has a low specification (less than two CPU cores) and you want to migrate a large volume of data.
Prerequisites
Background information
When migrating data to the destination ApsaraDB RDS for MySQL instance, DTS generates a large number of log entries in the instance. The log collection program of the instance scans and queries slow log tables. This increases the CPU load of the instance and compromises the performance of data migration.