After you connect to a DDM instance through the MySQL client, you can run command show full innodb status to query information about the associated RDS for MySQL instances. The following information can be queried:
- Current time and duration since the last output.
- Status of the master thread.
- SEMAPHORES including event counts and available waiting threads when there is high-concurrency workload. You can use the information to locate performance bottlenecks if any.