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When a batch of data is processed and published to the Analytics dahsboard dashboard, the ESB idles for a defined time interval before processing another batch of data. This is to ensure that too much data will not be stored in Analytics at a given time. By default, the ESB idles for 5000 milliseconds (5 seconds).
If you want to change the default indle idle time, add the following configuration to the <ESB_HOME>/repository/conf/carbon.xml file and specify the required idle time interval.
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