On Mon, 17 Dec 2018 at 15:04, Peter Nabbefeld <peter.nabbefeld@xxxxxx> wrote: > > since some days, I'm noticing HD is too busy, and my laptop is very slow > in some cases. > > It might also be worth checking the health of your hard disk with "smartctl -A /dev/sd<x>". Look out for "Reallocated Event Count", "Current Pending Sector", and "Offline Uncorrectable". These should be zero. If they're not zero, the hard disk may be slowing down due to the firmware trying to correct disk read errors transparently, causing processes to spend an excessive time in IO-wait. I've found that these days, failing hard disks tend to cause slow-downs rather than outright crashes. Paul
