htop does not show all processes

Question

I'm using Ubuntu 12.04 with LXDE desktop environment.

Sometimes my computer runs really slowly and the LXDE its CPU graphic shows a permanent 100% CPU usage. However, when I'm opening htop in a terminal, it says only ~10-30% of CPU is used. Why doesn't htop show all processes so I can see which process is eating my CPU?

Thanks

score 10 · Answer 1 · answered May 13 '18 at 12:37

10

By default, htop hides kernel threads like nfsd. To show/hide kernel threads, press uppercase K to toggle. htop will save you settings when you exit.

https://askubuntu.com/questions/145707/why-doesnt-htop-display-the-same-processes-as-top

answered May 13 '18 at 12:37

NoelProf

211

score 5 · Answer 2 · answered Aug 14 '12 at 19:16

5

Run htop under an administrative account like root, you can use su - to drop in a root shell to execute htop or you can instead run sudo htop if you have sudo installed.

answered Aug 14 '12 at 19:16

Tamara Wijsman

57,881

score 0 · Answer 3 · answered Aug 14 '12 at 19:11

0

I would guess that you have a multi-core cpu and only one core is at 100%. htop will list activity for all cores. Try top instead. If one of your cores is at 100% top will show 100% cpu usage.

answered Aug 14 '12 at 19:11

terdon

54,564

htop does not show all processes

3 Answers3