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Thread: how to improve graphics performance in xen guest

  1. #1

    Default how to improve graphics performance in xen guest

    this is the first post for me in this forum ,
    I was using centos for my business applications and now I am trying to work only with opensuse and install my other oprerating systems in it .

    I was always using vmware , but I decided to try another virtualization technologies other than vmware for testing , I searched the internet and found many other like virtualbox , kvm , xen .

    iI concluded from my search that xen and kvm will be the faster type , I decided to test them , I choosed xen , it is better thank kvm .
    I installed opensuse 11.4 and installed xen hypervisor deployed two VMs windows xp and centos 4.8 , they are runing quite good but I have some questions :

    1 : Isn't there anyway to improve graphics performance in xen guest , or change the video card memory or type ?
    2 : Isn't there any way to copy and paste between the host and guest ?
    3 : Isn't there any free application like vmware tools or virtualbox guest tools for xen ?
    4 : I use these VMs to install some applications for my geophysics work which requires good graphic performance in the vm , also I don't them to be sluggish sometimes , which is better for that vmware or xen ?

    I am sorry for that long post , but i want you to welcome in opensuse community , really I hate windows , don't want to revert back to it anymore .

  2. #2

    Default Re: how to improve graphics performance in xen guest

    I will add some notes for my video card and proceesor :

    I have Toshiba laptop sattelite A500-1F4 with intel core i5 processor and
    nvidia geforce g330m video card , I installed my video card driver using
    installer from nvidia website beside xen kernel as per a page in opensuse wiki .

  3. #3

    Default Re: how to improve graphics performance in xen guest

    well from what I understand the view that you get to the virtual machine with XEN is actually a VNC type tunnel.
    you might get better video performance from VMware but then there is a licensing restriction on the software..
    I am unsure about the smaller VMware Player restrictions...
    the pro with XEN is full usb access without license restriction the con is less than stellar video.
    I have used VMware Player it is quite useful, but once again I am unsure of the restrictions for other than private use.
    there maybe an alternative like using teamviewer instead of the default vnc connection.

  4. #4

    Default Re: how to improve graphics performance in xen guest

    and yet another alternative...
    since XEN does full USB it might be possible to get a usb video dongle to run a separate monitor that the guest would control native and that might be the ticket, I know your on a laptop so this might not be the ideal setup.
    but it was just a thought.

  5. #5

    Default Re: how to improve graphics performance in xen guest

    Quote Originally Posted by ed_v View Post
    the pro with XEN is full usb access without license restriction the con is less than stellar video.
    when I try to add usb storage to xen guest it says that libvirt connection doesn't support storage management or connection management I also have a problem adding network interface to the guest , during the creation of the guest it gave me error for the network card error due to bridging .

  6. #6

    Default Re: how to improve graphics performance in xen guest

    [QUOTE=ed_v;2337933 it might be possible to get a usb video dongle to run a separate monitor that the guest would control native and that might be the ticket, [/QUOTE]

    this is a really smart idea , I can check prices and see that ,
    as there is no other solution for improving graphics .

  7. #7

    Default Re: how to improve graphics performance in xen guest

    Quote Originally Posted by iageoscience View Post
    when I try to add usb storage to xen guest it says that libvirt connection doesn't support storage management or connection management I also have a problem adding network interface to the guest , during the creation of the guest it gave me error for the network card error due to bridging .
    unfortunately it has been a while since I messed with XEN, however my suggestion is to login to a desktop as root to test the machines setup as this would reveal whether or not it is a permissions issue.
    once again it has been a while since I messed with XEN, but I just landed a server tower than I can experiment on.
    on a side note do your geophysics programs run on dos? (I have seen some civil software programs that are dos native...)

  8. #8

    Default Re: how to improve graphics performance in xen guest

    Quote Originally Posted by iageoscience View Post
    I choosed xen , it is better thank kvm.
    It is debatable.


    Quote Originally Posted by iageoscience View Post
    1 : Isn't there anyway to improve graphics performance in xen guest , or change the video card memory or type ?
    Install a NX server (NoMachine or FreeNX) on the guest and connect to it using a NX client. Then it's almost perfect. The X server itself doesn't even need to run on the guest.

    Quote Originally Posted by iageoscience View Post
    3 : Isn't there any free application like vmware tools or virtualbox guest tools for xen ?
    You can use virt-manager to create and manage xen and kvm virtual machines locally or remotely.

    Quote Originally Posted by iageoscience View Post
    4 : I use these VMs to install some applications for my geophysics work which requires good graphic performance in the vm , also I don't them to be sluggish sometimes , which is better for that vmware or xen ?
    That's another problem. NX won't give you better graphic performances on the vm itself but it is significantly faster than vnc (no doubt!).

    You might be interested in taking a look at this thread: vm-create : create kvm virtual machines. It should work for xen vms with little or no change since it can handle both. I haven't tested it on openSUSE 11.4 host yet (only 11.3, Fedora 14 and Ubuntu 10.10).

  9. #9

    Default Re: how to improve graphics performance in xen guest

    Quote Originally Posted by iageoscience View Post
    this is a really smart idea , I can check prices and see that ,
    as there is no other solution for improving graphics .
    I don't know if it is possible because I am unsure how the X server would correlate the mouse movement across a monitor that isn't in use on the host OS, in all reality I bet this is un-charted waters when it comes to what is possible IMO... so don't get to much in a hurry.

  10. #10

    Default Re: how to improve graphics performance in xen guest

    Quote Originally Posted by please_try_again View Post

    Install a NX server (NoMachine or FreeNX) on the guest and connect to it using a NX client.

    .
    if my guest os is windows can I install nx server on it and connect it with nx client ?
    I searched the internet found something like suse linux drivers for xen guest Is this free ?

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