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Re: [Xen-users] Xen 3.2 with Ubuntu 8.04 (64-Bit) on Intel Nehalem (i7)

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Subject: Re: [Xen-users] Xen 3.2 with Ubuntu 8.04 (64-Bit) on Intel Nehalem (i7)
From: Jan Marquardt <jm@xxxxxxxxxxx>
Date: Thu, 28 May 2009 10:51:32 +0200
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Jan Marquardt wrote:
2. After recompiling the kernel with CONFIG_NR_CPUS=16 /proc/cpuinfo still just shows 8 cores, but xm vcpu-list shows the 16 cores correctly. Does someone know which config options are necessary to get it working correctly?

I am now able to answer this question on my own. Hyper Threading is under Ubuntu disabled on default. You can activate it by setting "ht=on" on the kernel command line. I have got this information from the thread below:

http://ubuntuforums.org/showthread.php?p=895077

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