MONO 4.6.2 High CPU Usage on Server

Question

I have updated my:

• Ubuntu server to 16.04.1 LTS and
• MONO to v4.6.2

...from offici

Answer 1

I have played around with various MONO versions, and typing "service apache2 reload" to reproduce the high CPU usage problem.

In MONO 4.8, it seems to happen to happen a bit less often but the problem is still there.

In MONO 4.2.3.4, the problem is also there.

In MONO 4.2.1 that comes by default on Ubuntu, this problem doesn't happen.

As for .NET Core, some have tried it and highly recommended me to avoid it until it becomes more stable.

So for now, the only solution is to stick to MONO 4.2.1

This also confirms that this is related to MONO and not to my code or the server configuration.