Processors and cores in KVM

M

MonsterMan2012-02-16 13:34:54

KVM

MonsterMan, 2012-02-16 13:34:54

Hello.
Tell me, please: there is a server - 2 processors with 8 cores (4 + 4 Hyper-Threading's), on a Debian and KVM server. Created 2 virtual machines with Windows Server 2008 R2 Standard guests and set vcpus=8 when creating each guest. When checking the vcpuinfo information, 8 processors are displayed for each, but inside WinServer2008R2Std only 4 are displayed in the task manager.
Before that, the guest was Windows Server 2008 R2 Enterprise and all 8 were displayed in it.
Apparently this is due to the limitation of the Standard edition, which prohibits using more than 4 processors, and the guest Windows just treats the dedicated cores as separate processors, i.e. for her, this is 8 single cores.
Question: am I guessing correctly, and if so, is it possible to somehow assign in KVM not 8 single-core processors to a guest, but 4 dual-core ones, so that Windows gets 8 cores?
Thank you very much!

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2 answer(s)

P

Phillip Gruy, 2012-02-16
@DarkTwin

Perhaps this will help you
www.linux.org.ru/forum/admin/6445308?lastmod=1309459638653#comment-6445424

R

RuJet, 2012-02-16
@RuJet

Yes, right.
www.softmark.ru/catalog/soft/products/ms_server_2008.php
Standart supports 4 processors