High memory usage on Ubuntu 16

[shravan2x]

I run a number of ASP .NET Core 1.1 servers on Ubuntu. This is the htop view of one of the processes:

The process appears to be using 20G of VIRT. I understand that this is not actually allocated memory, but is the highest among all processes running on the entire system. This is view of a number of apps:

Every one of the 20.xG VIRTs is an ASP.NET Core app (and every other app in the 1000M range is mono). The actual ASP.NET server itself runs on Kestrel, is very simple and serves only static pages via MVC.

1. Is there a reason for such a high VIRT?
2. Why does an app that only serves static pages have 47M of private memory? (I'm aware some other language like PHP or even plain HTML might be better suited for my use, but I use ASP since it is more customizable and fun to work with)

Please note that since this scenario lies on a production server, the version is 1.1. I apologize if it has already been resolved in another issue.

[shravan2x]

This issue still persists on .NET Core 2.0 and ASP.NET Core 2.0.

[Eilon]

Closing this issue because it appears that the two related issues above already have explanations.