Comment 16 for bug 1458170

I have problem rebooting, takes about an hour before systemd outputs the error message "unable to unmount /dev/.bootchart/proc" which just flashes by.

From Ubuntu 16.04

wc -l proc_ps.log
16347205 proc_ps.log

free -m
              total used free shared buff/cache available
Mem: 7868 4763 382 2257 2722 542
Swap: 8071 4419 3652

du -h proc_ps.log
3,7G proc_ps.log