AI Portal : Common Steps to debug performance issues

First published on MSDN on Oct 24, 2017

Here are common steps I use during troubleshooting performance issues in the Application Insights portal :

1. 
   Log into portal.azure.com
   


2. 
   Navigate to your Application Insight instance
   


3. 
   In the overview tab, click on the
   
   Search
   
   button as shown below
   

   
   
   

   
   


4. 
   Click on the
   
   Time range
   
   button and select a time range that is closer to the perf issue
   

   
   
   

   
   


5. 
   Now click on the Filters button
   

   
   
   

   
   


6. 
   In the filters blade, look for
   
   Request Performance
   
   and click on the
   
   Show More
   
   

   
   
   

   
   


7. 
   Select the long running requests as shown below and click on
   
   Done
   
   button
   

   
   
   

   
   


8. 
   Now you should see only long running requests. Click on one of the long running requests
   

   
   
   

   
   


9. 
   In this request blade you should see the dependency calls. This show
   
   when the dependency call was invoked
   
   and how long it took to execute
   

   
   
   

   
   


10. 
    To get more details on this specific request, click on the
    
    All available telemetry for this operation
    
    and you should see trace statement, custom events, page view, dependency calls, exception if any for this Request as shown below