Percona Toolkit is a collection of advanced command-line tools used by Percona support staff to perform a variety of MySQL and system tasks that are too difficult or complex to perform manually, including: - Verify master and replica data consistency - Efficiently archive rows - Find duplicate indexes - Summarize MySQL servers - Analyze queries from logs and tcpdump - Collect vital system information when problems occur Percona Toolkit is derived from Maatkit and Aspersa, two of the best-known utility toolkits for MySQL server administration.