12155EventSentryPerformance MonitoringThe performance counter "Process(*)\% Processor Time" (instance "mysqld-nt") is back below the threshold of 50, the current average is 48.
This event is logged by EventSentry because an instance of performance counter is back below the configured threshold limit, clearing a previous alert.
Performance monitoring allows you to monitor all performance counters available and exposed by the OS.
This feature can be configured at "Packages -> System Health Packages -> Package Name -> Performance Monitoring -> "+" (add a performance counter) or "-" (remove a performance counter)".