Re: [Xen-users] stubdom

[Manuel Knitza <manuel.knitza@xxxxxxxxxxxxxxx>]

Von meinem iPhone gesendet

Am 18.05.2016 um 11:45 schrieb 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.

Seems to be a somehow orphaned wrong configuration parameter:

Then, to run the stubdom, add this to your xl configuration file: device_model_linux_stubdomain_override = 1

(c.f. https://blog.xenproject.org/2012/12/12/linux-stub-domain/)

-George

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