Howto: Linux detect or find out a dual-core cpu

by on August 29, 2006 · 5 comments· LAST UPDATED February 20, 2007

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Q. How do I find out my cpu is a dual-core cpu on Cent Os Linux?

A. Following are are few tips for identifying whether a cpu is dual-core or not. Please note there are few factors that might give your wrong result. For example wrong kernel image installed.

Task: Display CPU information

Type the following command to get overall cpu info:
$ less /proc/cpuinfo

Task: Identif whether a cpu is dual-core or not

$ grep cores /proc/cpuinfo
Output:

cpu cores       : 2

Or type following command:
$ grep "core id" /proc/cpuinfo

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{ 5 comments… read them below or add one }

1 Girish June 25, 2007 at 10:25 am

Hi.. Can u plz say how to find the details in windows too??

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2 smuck February 25, 2009 at 3:38 am

yawn….
my computer properties

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3 demonhill June 16, 2009 at 3:08 am

Hi,
I got this (below) in my dual cores… does the result is correct
executed this grep cores /proc/cpuinfo and it produces below two lines …

cpu cores : 1
cpu cores : 1

:)
Demonhill

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4 bianggio22 October 19, 2009 at 4:08 pm

I have a Dell power edge 2650 intel xeon dual-core server, i’ve runned these commands and i’ve got these, my question is these output command is OK?

root@shadow:~# grep -i core /proc/cpuinfo
core id : 0
cpu cores : 1
core id : 0
cpu cores : 1
core id : 0
cpu cores : 1
core id : 0
cpu cores : 1
root@shadow:~# grep cores /proc/cpuinfo
cpu cores : 1
cpu cores : 1
cpu cores : 1
cpu cores : 1
root@shadow:~# grep “core id” /proc/cpuinfo
core id : 0
core id : 0
core id : 0
core id : 0

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5 Vivek August 3, 2011 at 2:04 pm

How you come to Know Whether it is dual or quad core CPU?

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