---
title: "Collect performance data"
canonical: "https://support.appfire.com/space/TSH/1800799165/Collect%20performance%20data"
format: markdown
---
To investigate performance problems related to Jira / Tfs requests please follow the instruction to gather additional logs. Set  Web.config  property  PerformanceTrackingViaETW  to  true  and restart the IIS. Download  PerfView  tool from  GitHub . ( Security information  ) Find the PID (process id) of the  IIS Worker Process  (or  IIS Express Worker Process ) process running the Synchronizer. Run the following command in the terminal. Argument  /focusProcess=  should be set to process id from point 3 ( 11704  in this example). .\PerfView.exe collect -OnlyProviders:"*Appfire-TFS4JIRA" /focusProcess=11704 While PerfView is running it will gather the Jira and Tfs requests logs. We advise collecting the data for at least a few items being synchronized. Please make sure to cover the fields and options configured in the profile setting such as attachments, links between items, comments, etc. If you want to stop collecting the data click  Stop Collection  button: PerfViewData.etl.zip  has been created. It can be viewed with the  PerfView  tool and sent to support for further investigation of performance issues.