[CentOS-virt] WinXP Xen guest: compare VNC vs RDP
Ed at Heron-ent.com
Thu Apr 23 00:00:34 UTC 2009
From: "Joseph L. Casale", Wednesday, April 22, 2009 4:23 PM
>> I'm experimenting with using WinXP Xen guests as an alternative to
>>upgrading workstations. The administrative advantages seem overwhelming.
> Using the beta opensource parvirt drivers? Performance would be
> otherwise. On that note, my environment would not permit the unstable
> of such an exercise...
Actually, no. I'm using the fully virtualized guest. My test virtual
machine server is a Dell PowerEdge 2900 with dual-core Xeon with stock
CentOS 5. It only runs at 2Ghz, but I'm finding acceptable performance for
the standard business applications that my users will run. The system can
go up to 2x4 core Xeons running at 3.33Ghz or something. Ram can go up to
48G and it has the option of 2 banks of 4 slots for hotswap hardware RAID.
I'm hoping to be able to run about 12 virtual XP boxes on a 2900 with 8 x
3Ghz cores and 16G RAM.
My current workstations are 1.6Ghz Celerons with 512M to 1G RAM. They are
only running Outlook Express, Internet Explorer and a couple of proprietary
If paravirtualization drivers for WinXP ever become stable, that'd improve
performance and probably increase the number of WinXP VM's quite
>> Please share thoughts about using VNC vs RDP for remote desktop
> RDP will be way faster, not to mention using vnc provides access to the
> console which won't have video performance needed.
Have you done any real world like testing? My experience seems to
indicate VNC being faster on a LAN. Since the console is being redirected
in the host, rather than the guest, it seems to demand less processing
power. Also, turning off remote access in the guest loads less software.
Since the host supports the VNC console access, it becomes available much
sooner than WinXP get termserv up.
>> Please share any anecdotal information regarding user reactions and/or
> There's nothing cooler than Xen, but IMHO opinion I would be using
> a bit more stable for Windows guests, it's not the right tool for >this<
> as far as I am concerned.
I've got some local databases with chatty Windows clients that becomes
unuseable across the WAN and doesn't play well with MS Terminal Services.
Rather than have a stack of physical WinXP machines for my remote users, I'm
looking at virtualization. VMWare gets too expensive, too fast.
More information about the CentOS-virt