Headless Server - High Cpu Usage

Hello,
I have the following situation: I'm working on a project, where i use multiple headless server instances (each server instance is a scene)

Building the instance in windows, with vsync enabled (every second v blank - 30fps) when the scene is idle , i get 3-5 % cpu usage.

If i make the same build as an ubuntu binary with headless mode checked, and run it on a server , i get a much higher cpu usage. ( it takes an entire cpu? )

My questions are:
1) Does a headless build take into account the Application.targetFramerate setting? (i know there is no screen to output to - but i still need the limit the targetFramerate places)
2) Does the performance differ so much between Windows and Ubuntu?

 

Yes, you should set the target framerate. (A headless server won't be able to use vsync.)