VirtualBox

Ticket #12742 (closed defect: obsolete)

Opened 7 years ago

Last modified 4 years ago

Very slow performance when using multiple cores

Reported by: nyahoo Owned by:
Component: other Version: VirtualBox 4.3.8
Keywords: multiple CPU, Perfformance Cc:
Guest type: Windows Host type: Windows

Description

Hi,

I am trying to use Virtualbox to run a Windows Server 2012 guest on a Windows Server 2012 R2 host, which has two 6-core xeon processors and 64Gb Ram, with 2 seagate constellation disks in RAID 1.

We have moved over a VM from our desktop (core i7) environment as a test, where it works fine with 4 cores set, and the VM runs incredibly slowly when given anything more than 1 core for its number of CPUs setting. I have attached a log files of 1core and 6core startup/shutdown of a standard Windows Server 2012 install with MS SQL as an example. The 1 core machine boots up in about 15 seconds, whereas the 6 core version takes well over 2 minutes, and then is still slow once startuo completes. Does Virtualbox have an issue with this type of CPU and multiple processors? It is affecting our ability to use it as a development environment

Attachments

Win2012-SP2013-2014-02-26-21-10-39-6-cores Download (107.0 KB) - added by nyahoo 7 years ago.
Record of boot of VM when number of cores is set to 6 (in a 12/24 core physical machine)
Win2012-SP2013-2014-02-26-21-15-31-1-core Download (92.4 KB) - added by nyahoo 7 years ago.
Record of boot of VM when number of cores is set to 1 (in a 12/24 core physical machine)

Change History

Changed 7 years ago by nyahoo

Record of boot of VM when number of cores is set to 6 (in a 12/24 core physical machine)

Changed 7 years ago by nyahoo

Record of boot of VM when number of cores is set to 1 (in a 12/24 core physical machine)

comment:1 Changed 6 years ago by jarrednicholls

It seems that this multiple-CPU issue has been around for years. I am too having the same issue, on Windows 8.1 64-bit machine running on a Mac Pro Host machine w/ OS X 10.9.4. I had this same issue over 2 years ago with VirtualBox 4.1, then w/ 4.2, and still with 4.3.16. When is this going to ever be resolved!?

I've decided to use Parallels and it's lightyears better, albeit I can only go up to 8 cores I believe.

Last edited 6 years ago by jarrednicholls (previous) (diff)

comment:2 Changed 4 years ago by aeichner

  • Status changed from new to closed
  • Resolution set to obsolete

Please reopen if still relevant with a recent VirtualBox release.

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