Um, I have a very powerful pc, so I get no slow downs. i7-3820 with 16GB of ram. htop reports no CPU usage, but free -m reports some interesting memory consumption. free -m total used free shared buffers cached Mem: 16030 15868 161 0 150 13831 -/+ buffers/cache: 1886 14143 Swap: 0 0 0 I know that "used" is for caching/etc., but 15GB is a bit too much. Downgrading the kernel is not an option because the kernel is patched and downgrading would take just too much. I know have 234 kworkers, without suspending. Thank you for your answers