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From "Arnaud G (JIRA)" <>
Subject [jira] [Commented] (CLOUDSTACK-904) CloudStack export the CPU as a socket not core
Date Mon, 11 Nov 2013 16:35:18 GMT


Arnaud G commented on CLOUDSTACK-904:


I created CLOUDSTACK-5071 to follow up on this issue, however it seems that it was quite unnoticed
despite the fact that this bug is critical for KVM.

> CloudStack export the CPU as a socket not core
> ----------------------------------------------
>                 Key: CLOUDSTACK-904
>                 URL:
>             Project: CloudStack
>          Issue Type: Bug
>      Security Level: Public(Anyone can view this level - this is the default.) 
>          Components: KVM
>    Affects Versions: pre-4.0.0, 4.0.0
>            Reporter: Ahmad Saif
> I've a VM that's running (Windows 2008 Standard R2 64bit) which was working on a 4 cores
offer. when I upgraded the service offer to 8 cores and checked the VM I noticed that it still
have only 4 cores !!
> I dig a little bit on the windows machine itself, and found that it see the CPUs as sockets
not cores and this version of windows support only up to 4 cores.
> when I checked the vm XML file on the host I saw that the CPU is exported as following
> <vcpu>8</vcpu>
> and it should be exported as following:
> <vcpu>1</vcpu> <cpu>
> <topology sockets='1' cores='8' threads='1'/>
> </cpu>
> otherwise in such systems where you are limited with the sockets number you cannot have
the required service offer.

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