This could be related to IO scheduling. In the past Unity7 has been guilty of doing IO during graphics operations. So graphics performance was impacted by heavy IO.
I haven't noticed this regression with kernel 4.8 myself. Perhaps because I've been using reasonably efficient SSDs? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1638278 Title: 4.8 kernel, under heavy load desktop unusable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1638278/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
