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art
 Post subject: CPU usage
PostPosted: Tue Jun 29, 2010 4:32 pm 
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Senior Newbie

Joined: Wed Jun 23, 2010 11:22 am
Posts: 14
Hi,

I'm new to Xen, so pardon my lack of knowledge on the subject -

when I'm viewing CPU usage in "top" - 2% for a process, for example - is this the 2% of the allotted to my node right now, or it is always 2% of the whole physical processor?

Thanks!
Art
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caker
 Post subject:
PostPosted: Tue Jun 29, 2010 5:15 pm 
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Linode Staff
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Joined: Tue Apr 15, 2003 6:24 pm
Posts: 3090
Website: http://www.linode.com/
Location: Galloway, NJ
Your Linode.

-Chris
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zunzun
 Post subject:
PostPosted: Wed Jun 30, 2010 5:42 am 
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Joined: Fri Feb 18, 2005 4:09 pm
Posts: 594
As I understand it if top shows a process using 40% CPU on a Linode, that means 40% of one of the four (virtual) CPUs available to you, or 10% of your Linode's total parallel processing power.

James
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BrianJM
 Post subject:
PostPosted: Wed Jun 30, 2010 9:40 am 
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Joined: Thu Jun 03, 2010 4:44 pm
Posts: 35
zunzun wrote:
As I understand it if top shows a process using 40% CPU on a Linode, that means 40% of one of the four (virtual) CPUs available to you, or 10% of your Linode's total parallel processing power.

You are correct. You can confirm this by pressing "1" after you are in "top" - this will toggle displaying the CPU usage of all 4 cores.
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pclissold
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PostPosted: Wed Jun 30, 2010 12:27 pm 
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Joined: Fri Oct 24, 2003 3:51 pm
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BrianJM wrote:
You are correct. You can confirm this by pressing "1" after you are in "top" - this will toggle displaying the CPU usage of all 4 cores.

Cool. I need to go and read the man page and see what other tricks I've missed.

_________________
/ Peter
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