high cpu usage in VirtualBox

[frogmouse]

I've just begun using Antergos xfce in VirtualBox (on a Lenovo T530). I generally keep VirtualBox running in one of the four desktops I run in Windows 10. Other linuxes use very little cpu time when they're idling.

Antergos (with what I think is web-greeter) takes 39-41% of the cpu when the lock screen is running .
As soon as I log in, the cpu time drops to around 10%, then to 5 - 6% when I'm actually doing something.

I poked around and found that I could substitute litarvan for antergos in lightdm-webkit2-greeter.conf. Running this reduced my lock-screen cpu usage to 0.4 - 0.6%.

It is possible that the culprit is the clock animation -- it shivers every now and again. It's possible that this is associated with #43 "Processes left running ...", but I thought you should know about my experience.

[lots0logs]

Let's track this on #148