xfce4-taskmanager has bad nonlinear cpu usage vs. number of cores

Submitted by Nico van Vliet

Assigned to Mike Massonnet

Link to original bug (#12247)

Description

I checked the CPU usage of task-manager against the number of cores for the systems I can access. In all cases task-manager was set to a delay of 1s. CPU usage was measured with top. I found this:

nr. cores %CPU OS 8 2.5 Opensuse 13.2 12 7.5 Ubuntu 14.04 LTS 24 25 Ubuntu 14.04 LTS

So there is roughly a 3 times increase for every doubling of cores.

Ref: https://forum.xfce.org/viewtopic.php?pid=39035#p39035

Regards, Nico