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[Xen-users] Windows Server 2008 R2 is unusable with more than 16 vcpus

  • To: "xen-users@xxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxx>
  • From: Jan Hejl <jh@xxxxxxxxxx>
  • Date: Thu, 20 Jun 2013 16:09:20 +0200
  • Delivery-date: Thu, 20 Jun 2013 14:10:58 +0000
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  • List-id: Xen user discussion <xen-users.lists.xen.org>

Hi all,

i'm running 5 linux domUs (2-4 CPUs, 1-3GB RAM, vcpu weight 256) and one Windows 2008 R2 (16 CPUs and 8GB RAM, vcpu weight 224) as a terminal server. In this configuration Windows works perfectly. When I set Windows domU with 32 cores it's bit laggy. Actually I'm able to connect, server manager shows up everything seems fine, but that's all i can do. I can't run any other app or shut it down. Mouse moves slowly.

Dom0 is 16 vcpus and 32GB RAM build on two 16 core AMD Opteron 6274 - 32 core together with 64GB RAM and RAID5 SSD LVM2 storage.

No log information at all.

Can someone please help me? I'm doing something wrong?

Thank you

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