问题
My organisation recently did a hardware refresh, so all software (VS 2013 etc) is newly installed.
Now we are all noticing a particular ASP.NET MVC 4.5 application is running extremely slow.
Took me a while to notice this, but in the output while debugging the first entry after each request is
'iisexpress.exe' (CLR v4.0.30319: Domain 11): Unloaded 'C:\Windows\Microsoft.Net\assembly\GAC_32\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'
After this entry, it shows iisexpress loading up hundreds of .NET dlls.
For the next request it will become Domain 12, and then hundreds of dll loaded entries again.
Other applications are always DefaultDomain, and have no performance issues.
Is there a setting somewhere that is controlling this?
Edit - more info: The very first request is DefaultDomain, then it starts incrementing from Domain 10.
A previous version of this app on MVC 4.0 is working fine.
One major addition between versions is microsoft owin.
Logged event happens on each request - Event message: Application is shutting down. Reason: Configuration changed, however no files have actually changed in the dev folder. Temp ASP.NET folder is getting rebuilt each time.
回答1:
There are ways to log the reason why the app domain shutdown happened:
http://blogs.msdn.com/b/tess/archive/2008/11/06/troubleshooting-appdomain-restarts-and-other-issues-with-etw-tracing.aspx
来源：https://stackoverflow.com/questions/26136804/asp-net-mvc-on-iisexpress-rebuilding-entire-site-for-each-request