[ovirt-users] CPU Threads Help!!!

[Roy Golan]

On 08/12/2015 01:55 PM, Artyom Lukianov wrote:
> Can you please provide output of lscpu for your host please.
> Thanks


> ----- Original Message -----
> From: "zhangjian2011" <zhangjian2011 at cn.fujitsu.com>
> To: users at ovirt.org
> Sent: Wednesday, August 12, 2015 1:06:11 PM
> Subject: [ovirt-users] CPU Threads Help!!!
>
>
>
> Hi, Guys Recently I am investigating the Optimization Policy in Cluster and try to use “ CPU Threads ”.
>
> As the manual of description:
>
> ========
>
> For example, a 24-core
>
> system with 2 threads per core (48
>
> threads total) can run virtual machines with
>
> up to 48 cores each
>
> ========
>
>
>
> My host CPU is
>
> i3-2120 CPU (2 cores 4 threads)
>
>
>
> So I think the expect result case is :
>
> 1. If the “ Count Threads As Cores ” disable , we can’t run virtual vm with above 2 vCPU
>
> 2. If the “ Count Threads As Cores ” enable , we can’t run virtual vm with above 4 vCPU
>
>
>
> Now the problem is about result case 1:
>
> 1. When I set “ Count Threads As Cores ” disable , I still can run virtual vm with 4 vCPU
>
> Can anyone help me to explain it ???

Like Artyom mentioned, it best to see your lscpu output but my guess is 
that the 4 threads is actually 2 per core.
  And there are 2 core and 2 sockets. this means 4 cpus without hyper 
threading and 8 with.

BTW the Host "General" subtab on the webadmin should output all this 
info as well. Check it out.

> Regards,
> Jian
>
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