Add PerfView instructions

Author: Timothy Mothra

articles/azure-monitor/app/asp-net-troubleshoot-no-data.md

@@ -230,5 +230,34 @@ Follow these instructions to capture troubleshooting logs for your framework.
 
 4. Revert these changes when you are finished.
 
+
+## PerfView
+[PerfView](https://github.com/Microsoft/perfview) is a free diagnotics and performance-analysis tool that help isolate CPU, memory and other issue by collecting and visualizing diangostics information from many sources.
+
+The Application Insights SDK log EventSource self-troubleshooting logs that can be captured by PerfView.
+
+To collect logs, download PerfView and run this command:
+```cmd
+PerfView.exe collect /onlyProviders=*Microsoft-ApplicationInsights-* -MaxCollectSec:300
+```
+
+You can modify these parameters as needed.
+
+- **MaxCollectSec**. Set this to prevent PerfView from running indefinitely and affecting the performance of your server.
+- **OnlyProviders**. Set this to restrict the logs collected to only those emitted from the SDK. You can customize this list based on your specific investigations. 
+
+   Our full list of providers is:
+
+   - Microsoft-ApplicationInsights-Core
+   - Microsoft-ApplicationInsights-Extensibility-DependencyCollector
+   - Microsoft-ApplicationInsights-Extensibility-Rtia-SharedCore
+   - Microsoft-ApplicationInsights-Extensibility-Web
+   - Microsoft-ApplicationInsights-Extensibility-WindowsServer
+   - Microsoft-ApplicationInsights-Web
+   - Microsoft-ApplicationInsights-WindowsServer-TelemetryChannel
+
+
+For more information about PerfView see [Recording performance traces with PerfView](https://github.com/dotnet/roslyn/wiki/Recording-performance-traces-with-PerfView)
+
 ## Still not working...
 * [Application Insights forum](https://social.msdn.microsoft.com/Forums/vstudio/en-US/home?forum=ApplicationInsights)