[CentOS-virt] Windows Xen VM's have high guest CPU usage and poor performance

Bill McGonigle bill at bfccomputing.com
Fri Jan 22 19:27:05 UTC 2010

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.


Bill McGonigle, Owner
BFC Computing, LLC
Telephone: +1.603.448.4440
Email, IM, VOIP: bill at bfccomputing.com
VCard: http://bfccomputing.com/vcard/bill.vcf
Social networks: bill_mcgonigle/bill.mcgonigle

More information about the CentOS-virt mailing list