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Reduce JIT overhead on initial startup of an ASP.NET MVC application

An MVC3 application is being developed and multiple (multi-second) startup times are in progress. Profiling profiles with ANTS binds the only significant contributor to boot time as "(JIT overhead)" at 85-90% of the time spent on the load. Subsequent downloads of the same page are nearly instantaneous and spend ~ 5% of their time in JIT.

I used NGEN on downloadable assemblies (and made sure they were in the GAC), and used the aspnet_compiler tool to precompile the site itself. None of them have a significant impact on the initial launch time.

What other options exist to reduce the impact of JIT on initial loads?

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I would suggest ti check as follows

  • Make sure debug in web.config is set to false
  • Release Mode Assembly
  • Precompiled Views
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Source: https://habr.com/ru/post/1386786/

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