Re: [Xen-users] stubdom

[George Dunlap <dunlapg@xxxxxxxxx>]

On Tue, May 17, 2016 at 1:37 PM, 席康杰 <xikangjie@xxxxxx> wrote:
> Hi,
>
>     I read slide Performance Tuning Xen, find stubdom can boost HVM
> performance,
>
> so I try it, the wiki Device_Model_Stub_Domains says use the
> ‘device_model_stubdomain_override’
>
> option in guest configuration file:
>
>     device_model_stubdomain_override = 1
>
>
>
> This is my cfg file:
>
>
>
> name = "test_stubdom"
>
> builder = "hvm"
>
> vcpus = 2
>
> memory = 1024
>
> disk = ["tap:qcow2:test_stubdom.img,hda,w"]
>
> vif = ["type=ioemu, bridge=xenbr0, mac=00:16:3e:eb:ca:80"]
>
> boot = "c"
>
> pae = 1
>
> acpi = 1
>
> apic = 1
>
> localtime = 1
>
> vga="stdvga"
>
> vgaram=64
>
> vnc = 1
>
> vnclisten = "0.0.0.0"
>
> vncdisplay = 128
>
> vncunused = 0
>
> vncpasswd = "test"
>
> device_model_linux_stubdomain_override = 1
>
>
>
> The vm can start, but it has no difference with
> “device_model_linux_stubdomain_override = 0”.
>
> The dom0 also has backend qemu-system-i386 process for domain test_stubdom.
>
>
>
> Did I use stubdom wrong? or how to use stubdom? anyone has an idea?

Why did you add "linux" in the middle of that option?
device_model_linux_stubdomain_override is not a parameter that xl
knows, so it just ignores it.

 -George

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