I have upgraded my Fedora installation from 24 to 25. Since then, things that were done instantly before sometimes take half a second now. Examples are:

  • Switching the workspace in Awesome WM
  • Typing something into the terminal (Konsole, fish shell)
  • Pasting with the mousewheel (e.g. into Freemind, a Java Mindmap software)
  • Starting a new terminal window
  • Performing an action in Firefox

I do not quote know where this is coming from. Since it impacts a lot of programs from various toolkits (Qt, GTK, Java), I am not really sure what is going on. This regression is not catastrophic but rather annoying.

My display manager is LightDM, I use Awesome WM and a bunch of KDE programs. htop does not show anything out of the ordinary. The idle load (Konsole, Firefox, Spotify) is now at around 5%, I remember it to be lower and usually going down to 1%.

How could I diagnose this regressions? Any log that might help?

  • Did you move from X11 server to Wayland? – meuh Dec 6 '16 at 21:32
  • @meuh I don't think so with Awesome WM. – mattdm Dec 6 '16 at 22:28
  • Try sudo journalctl -f and note any errors particularly when it becomes sluggish. Also, maybe run iotop? – mattdm Dec 6 '16 at 22:30
  • I ran journalctl, albeit as a user. There were no interesting messages. – Martin Ueding Dec 7 '16 at 19:59

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