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Aspire one happy reported 4CPU

Asked by Waluyo Adi Siswanto on 2010-12-11

I have a new Aspire one happy (intel atom N550) and installed Ubuntu Netbook 10.10.
When I open the system monitor, I am very surprised that is is reported to have 4 CPU.
I don't think it has 4CPU, but why it is reported 4CPU.
Is that normal?
or do I have to set to have a proper number of CPU?
would it have an effect that because of this, the computer running slower?

Question information

Language:: English Edit question

Status:: Solved

For:: Ubuntu linux Edit question

Assignee:: No assignee Edit question

Solved by:: Federico Tello Gentile

Solved:: 2010-12-12

Last query:: 2010-12-12

Last reply:: 2010-12-12

Link existing bug

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mycae (mycae) said on 2010-12-11:

It is reported correctly. The N550 uses "hyper-threading", which emulates two cores to the software per actual physical core.

http://ark.intel.com/Product.aspx?id=50154

https://secure.wikimedia.org/wikipedia/en/w/index.php?title=Hyper_Threading

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Waluyo Adi Siswanto (was-wlk) said on 2010-12-11:

Thanks, now I understand.
Another thing that I would like to know is whether my Ubuntu netbook has already optimised to use HT.
Is that by default, or I have to set the HT somewhere?

I have reaf here:
http://ubuntuforums.org/showthread.php?p=5195879

however I could not find menu.lst? I am running only Ubuntu Netbook (not dual OS)

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