"Processor" and "System Load" in Luci Statistics: explanation please!

Hello! I have EdgeRouterX with OpenWRT 23.5.2.
I am trying to figure out if my router has enough CPU for what I do. Now, I had thought that usage of Processors and "system load" are the same kind of things. But then I realized that the peak on "system load" tab on luci statistics and that of "processor" tab do not coincide. Moreover, I realize that on "processor" tab, I see 4 cores listed. But EdgeRouter X is "dual core". So I would think there should be 2 cores listed. Am I getting wrong here? I would appreciate very much if someone could explain that to me....

There are 2 cores but each is "double" threaded so appear to be 4 cores.

The htop utility, in my opinion, gives a better view.

Install it first:

opkg update
opkg install htop

Then run it:
htop

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Here is an example:

@bluewavenet Thanks a lot for your reply! htop looks good: I guess it can also tell how much CPU a script uses, right? I'm going to give it a try.

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