Re: Windows Xen VM's have high guest CPU usage and poor performance

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On Fri, Jan 22, 2010 at 02:27:05PM -0500, Bill McGonigle wrote:
> On 01/22/2010 09:20 AM, Ryan Pugatch wrote:
> > Xen 3.4.2 may be an option, but I think I am going to pursue VMWare ESXi
> > at this point.
> 
> Be careful with glibc versions with VMWare on CentOS.  They haven't 
> bothered to update for 5.4, and it's very crashy.  You can get the 
> libc.so from 5.3 and put it in its library path to help.  Search on 
> 'vmware glibc 5.4'.
> 
> If you're willing to switch from Xen, you might also try out KVM.  It's 
> much easier to deal with than the VMWare tomcat/browser/browser-plugin 
> monstrosity, especially if you use X.  I've got a Win2K3 machine here in 
> an old version of KVM (less optimized) and launching Firefox only 
> briefly moved the CPU meter to 23%.  IOW, it seems normal.
> 

Also many people are running Windows 2003 VMs on Xen without problems.

-- Pasi

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