My kids played with my Nexus 7 and since then, I have a list of what I think is process on the upper right corner of the screen.
The first line is three numbers, like 4.38 / 4.7 / 4.77 and a colored bar.
And then, a list of process(?) com.android.systemui system_server mpdecision ... How can I close all that ?
Settings > Developer Options
there are a few things there that could be responsible. They all start with "show ... Something" e.g.Show hardware layers updates
andShow GPU view updates
and so on. Let me know if this helps. – RossC Aug 27 '14 at 08:45