> No, it is not: you had xterm and it subprocess eating all your CPU and
> nothing happened.
The xterm openssl script does not exemplify the problem since it does
not exercise graphics I/O. The issue is that the Xorg task is being
starved when screen application tasks are at the same or higher priority
level than the Xorg task. Try the following:
$ for i in $(seq 50) ; do chromium --new-window
https://www.youtube.com/watch?v=10f4899srvc & done
Click the each of the windows to give focus and start the videos. Notice
that the screen seems to freeze on common laptops.
Now try again by first setting the priority of the Xorg task to be
higher than the screen applications:
# renice -12 -p $(pgrep Xorg)
$ for i in $(seq 50) ; do chromium --new-window
https://www.youtube.com/watch?v=10f4899srvc & done
Click the each of the windows to give focus and start the videos. See
that now the windowing system is responsive to the user so that the
chromium windows can be closed.
