Terrible performance after loading to Win2008 x64.

[Arris]

This really sounds like the performance problems you get after installing Hyper-V. When you install Hyper-V, your “normal” Windows will also run on top of the hypervisor together with the virtual machines; in other words: your Windows Server 2008 x64 will run as a virtual machine beside the other virtual machines. The only difference is that it is a special one.

Try uninstalling the Hyper-V serverrole and see if the problems disappear! 🙂

Good luck!

Arris

[zorrack]

I have completely same issue. The machine is less sophisticated than timofcourse has, but still: AMD x64 QuadCore 2.3 GHz, 4Gb RAM, GeForce 8400GS. The performance is terrible. I’m trying to uninstall the Hyper-V now.

[zorrack]

Awesome! After removing Hyper-V everything just rocks!
No performance glitches, audio works perfectly, Aero works perfectly etc.

Does Microsoft goes to fix anything in R2?

[Remiel]

Yep I had the same issue – after i uninstalled hyper-v-role it works fine.

If activated hyper-v support in my bios but the performance was terrible

[timofcourse]

While Im psyched to hear the performance issue wasnt caused by something I screwed up, Im pretty bummed to hear Hyper-V caused such a performance hit. One of the main reasons to goto Win2008 was for the Hyper-V support as we’ve been using Virtual PC on our Vista laptops to run virtual images for work.

Are there any recommended settings one can make that at least minimizes the hit you take from Hyper-V? Its basically a requirement that I run it and Id like to do so with the least impact possible.

Thanks a bunch!

[mcclausky]

I had the same problems with Hyper-V installed. Just like most of you, the main reason for switching to server 2008 x64 was Hyper-V. I managed to run the OS smoothly after choosing the “Windows Standard” Color Scheme, located in “Window color and Appeareance”.

Hope it helps.

[VJunk]

This is an issue with accelerated video drivers and Hyper-V. Microsoft finally addressed it in KB article 961661: http://support.microsoft.com/kb/961661. It seems to be primarily with NVIDIA drivers but I am also experiencing it with an Intel graphics adapter in a Dell Latitude D830 (although the hard drive with this 2008 install was moved from a laptop with an NVIDIA GPU so that might have something to do with it). Switching to a 2008 in-box generic VGA driver fixes the issue but you lose Aero enhancements.

What I do is have the hvboot Hyper-V service set to manual (and therefore not started on boot) so everything runs fine. When I need Hyper-V, I start the service. Graphics performance goes down, but at least I can run Hyper-V. Once running, the service cannot be stopped so I reboot after I am done with Hyper-V.

Since the hvboot service does not appear in the Service MMC, you need to modify the registry directly. You can paste the following into a .reg file:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServiceshvboot]
“Start”=dword:00000003

To set it back to automatic, change it back to 00000001.

To start the service, enter the following at an elevated (run as administrator) command prompt: net start hvboot

[timofcourse]

I did a bunch of testing and I didnt find stopping the service to have any effect. As was previously mentioned, I think once you install the Hyper-V role, your host OS (Win2008) is operating on a HyperVisor rather then using dedicated hardware, which is the actual cause of the system slow down. Also that hotfix was release back in Jan which I have definitely tested and had crummy performance since it was released.

[Author]

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