IIS Worker Process - Application Pool Memory Issues

Question

I have an ASP.NET MVC internal website. I have seen the IIS Worker Process memory grow and grow until finally the website errors out. I have been doing some simple troubleshooting for memory leaks. I have change my code to minimum:

@using Intranet.Models
@model dynamic

@{
    ViewBag.Title = "Home Page";
    Layout = null;
}

Test

When I hit refresh the IIS Worker Process memory usage increases after every refresh even with the simple code above. I am currently restarting the IIS service nightly, but at mid afternoon the memory % on the server is over 95%.

Would it help to set some memory caps in the Application pool in IIS? What else should I be looking at?

I am running Windows 2012 but also testing on Windows 2019 with the same results.

Thanks, Bob

Answer 1

Is your memory usage is always more than 95% or it goes down and up?

open iis worker process and dobule click on it to check the currently executing requests. I suggest you could collect some dump files and analyze them. Refer this article for more detail: link1 , link2

you could also try iis application pool recycling when memory limits are exceeded.