Wait Event Consumers-opracowanie

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Wait Event Consumers-opracowanie - strona 1

Fragment notatki:

Wait Event Consumers
These consumers require both global_instrumentation and thread_instrumentation to be
YES or they are not checked.
• events_waits_current, if NO, disables collection of individual wait events in the
events_waits_current table. If YES, it enables wait event collection and the Performance
Schema checks the events_waits_history and events_waits_history_long consumers.
• events_waits_history is not checked if event_waits_current is NO. Otherwise, a
events_waits_history value of NO or YES disables or enables collection of wait events in the
events_waits_history table.
• events_waits_history_long is not checked if event_waits_current is NO. Otherwise, a
events_waits_history_long value of NO or YES disables or enables collection of wait events in
the events_waits_history_long table.
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