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MySQL Performance Schema exposes a new wealth of instrumentation, to DBAs and developers alike, that enable you to find answers to many of the questions that have been impossible, or more difficult than necessary, to answer in the past. This presentation covers performing everyday profiling and performance monitoring tasks, such as finding problem queries; researching blocked hosts; profiling I/O usage; analyzing resource usage by schema, table, or user; or tracing a session to see exactly where it spends its time.