Should be a choice for one graph on multicore CPUs

[Giannis]

It is more than a feature missing than a bug.

System monitor should be able to set to display the CPU load in one graph even in multicore CPU.

For exaple in a 4 core CPU when one core is loaded 100% and the other 3 are idle, it should be the choice to display that with a number of CPU load 25%.

Windows task manager has this ability. System Monitor should have this ability too.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Robert Roth (evfool)]

Which version of gnome-system-monitor are you running? You can check it in the menu by clicking Help->About.
The 3.8 version has an option in Edit->Preferences->Resources tab to draw a stacked area chart. Toggling that option maybe shows what you would like to see, with a twist: all core usages are shown on one graph, but summed up as a stacked area chart, so that you can see how each core contributes to the total usage, but you can also see the total usage.
See the attached image from my System Monitor 3.8 (available in the stable 13.04 and the development 13.10 version)
Would that help you, or you would like to see something else?

[Giannis (karzisss)]

I am using 3.4.1 on 12.04 LTS.

Yes this is close to what i would like to see. So it would be good to have the option to set it to display the percentage of total CPU use instead of each 4 cores use for example. Like Windows task manager.