I have a home server sometimes running at a high CPU usage rate of about 50 to 70 percents.
htop, my favorite process manager, I can sort the processes by CPU usage, but often there isn't any process consuming more than 0 % CPU. On the other side,
htop displays the whole CPU usage of the system which is about 50 percents, as said before.
I guess that there is an easy explanation for this, but I don't know it.
Maybe there are some hidden processes? But even running it as root doesn't show more processes.
I looked into
top, which is showing (at least) two more processes:
230 root 20 0 0 0 0 R 37.4 0.0 107:06.59 md127_raid5 20403 root 35 15 0 0 0 D 9.6 0.0 2:45.78 md127_resync
So my mdadm raid is currently resyncing, which has been confirmed when I displayed
/proc/mdstat. (See first comment.)
So this turns the question in: "Why doesn't htop display the same processes than top?"