CEP Event statistics is an important feature that helps for monitoring purposes of events . This gives real time request and responses vs time for all the Topics incoming and outgoing CEP. You can use this visualization to get an idea about system throughput, input frequency and check whether the inputs are received or outputs are published. By default event statistics is disabled in CEP to avoid over-head of unnecessary processing of events.
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Enabling/Disabling Event Statistics in CEP
To enable the event statistics in CEP, user needs to enable the tracing in carbon.xml of the CEP server. (<CARBON_HOME>/repository/conf/carbon.xml).
Change the property <StatisticsReporterDisabled>true</StatisticsReporterDisabled> to false to enable event statistics.