I am using DotTrace Performance (v 5.5.4) on my web application. I am trying to optimize the page load time after cold starting the MVC 5 application. Looking at the main thread on the snapshot, it seems like majority of the work is being done in "Native or Optimized code". Thats seems a little too generic and is not really helpful. What does that really mean and how do I dig into it further?
Note : I found a similar post on the jetbrains forum but there did not seem to be any resolution posted there either.
Probably it is JITting time there. Does the second opening of same page also takes much time? Maybe you have opportunity to use dotTrace 6.1+? It has Timeline mode that can show thread states, distribution by File I/O, Jit, GC times on any time range. It might reveal the underneath native activity on that thread.