intel-virtual-output: bad performance
Submitted by haarp @haarp
Assigned to Chris Wilson @ickle
Description
Hey,
I'm using intel-virtual-output on a Thinkpad W520 (Sandy Bridge, Nvidia GPU). xf86-video-intel-2.99.917.
I'm facing bad performance on the virtual screens. Cursor movement for instance is choppy. It feels as if the monitors are running at low fps (despite the fact that they're physically running at their fill 59.95Hz)
When there is movement on the virtual screen, e.g. a video being shown, CPU usage of the Xorg process running on the Nvidia rises sharply (package power consumption as shown in turbostat rises from 8 to 30W)
I'd like to improve this. Is there anything I can do to diagnose this or provide useful information?