I'm just starting to take a look at guest networking performance and am a
little disappointed. I'm comparing two setups:
Host: Windows Server 2008 R2 Hyper-V
Guest: CentOS 5.5 x86_64
Host: CentOS 5.5 x86_64 kvm running libvirt
Guest: CentOS 5.5 x86_64
The guests are essentially identical except that I'm running the Microsoft
Linux Integration Components synthetic drivers on the windows hosted VM. The
libvirt setup uses bridged networking. Running bonnie++ on a nfs mounted
filesystem on each guest I'm seeing the libvirt hosted guest get between
16%-35% of the performance of the Hyper-V guest. Is this expected? Is there
anything I can do to increase network performance of the kvm guest?
--
Orion Poplawski
Technical Manager 303-415-9701 x222
NWRA/CoRA Division FAX: 303-415-9702
3380 Mitchell Lane or...@cora.nwra.com
Boulder, CO 80301 http://www.cora.nwra.com
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