It is quite easy to profile Sitecore startup time on-premise, e.g. using JetBrains dotTrace. However, I can't find any good tools to do the same with Sitecore in Azure.
JetBrains dotTrace simply does not support Azure. The standard Azure .NET Profiler can record only 60 seconds and I guess it can't trigger a website start.
What tools or approaches can be used to get the details about code executions in Azure when Sitecore starts?