Application Insights Performance Profiler
I've been asked recently about performance profilers for various apps, and so I took another look at App Insights to see what's new/different/interesting in that space.
Luckily, I ran across this: /en-us/azure/application-insights/app-insights-profiler, which is super-awesome, and seem to work for ASP.NET Core (aspnetcore) apps as well! Here's a screenshot of the vanilla aspnetcore MVC app, hosted in a basic web app, after being thrashed by 100k hits to the "home" and "about" pages.
Check It out!