I loaded Okular 7 times with large documents (text books or text book chapters of at least 100 pages). I then started top and watched it as I did several things in various programs. Every time I did anything like a desktop switch, Xorg went to 100% CPU. The thing that really stood out was typing a new email from within Kontact. The type rate was so slow that it would only print out a character every second or so. Every time I typed several characters in a row the CPU usage for Xorg would go to 100% and stay there until all characters were eventually shown on screen. If I then did nothing the CPU usage of Xorg would slowly go back down to a low number. Once all the Okular instances were closed the problem did not occur again.
** Attachment added: "logs.zip" https://bugs.launchpad.net/ubuntu/+bug/607041/+attachment/1774862/+files/logs.zip -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/607041 Title: Periodically just about everything slows down to a crawl -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
