Viewing Worker History

This section explains how to view statistics relating to the performance of a selected node for a specific time interval.

1. Login to the Status Dashboard. For detailed instructions, see Monitoring the Stream Processor - Viewing the Status Dashboard.  When you login, the Node Overview page is displayed by default.
2. Click on the required node to view information specific to that node. 
3. In the page displayed with node-specific information, click one of the following gadgets to open the Metrics page.
   • CPU Usage
   • Memory Used
   • System Load Average
   • Overall Throughput
4. In the Metrics page, click the required time interval. Then the page displays statistics relating to the performance of the selected node applicable to that time period.
   
5. If you want to view more details, click More Details.
   

As a result, the following additional information is displayed for the node for the selected time period. 

1. • CPU Usage
     
     

     
     

   • JVM OS as CPU
     

     
     

   • JVM Physical Memory
     

      

   • JVM Threads
     

     
     

   • JVM Swap Space