Glen Wetzel (HE12025-07-24): > __Problem description:_ > I have noticed that when desktop screen applications peg cpu usage, such as > by having many browser tabs open or a bug in a web page's javascript, the > windowing system X appears to freeze so that the offending application > cannot be closed by the user. The mouse and keyboard are non-responsive > requiring a power cycle reboot. > > _To replicate:_ > Open many tabs on your browser to heavy javascript pages or other high > screen usage sites such as youtube.com. System will become non-responsive. > Mouse with lag and then freezes. Keyboard and mouse become useless.
Does your problem happen also when the programs eating the CPU are not graphical? You can test with this: for i in $(seq 50) ; do openssl speed & done Also, I do not observe the issue you mention. I suspect a problem with your video drivers is more likely. > It seems also desirable that some screen apps have high process priority > than other apps. Linux has since a long time heuristics to adjust the priority of apps depending on their use (interactive or batch) and their interactions; niceness is only one parameter in these heuristics. Regards, -- Nicolas George
