I posted this question before, but with no answer: (https://askubuntu.com/questions/400233/fstrim-is-taking-too-long).
I'm using ubuntu 13.10, I call
fstrim -v / on boot
Recently I realized that
fstrim command is taking too long with above average CPU usage.
Is this normal ? It works eventually.
The only thing that changed, is this happened among Ubuntu failing to moung encrypted swap on startup. I fixed the swap problem, but fstrim still slow on startup.