Re: [Xen-users] How to set Domain-0 VCPUS in Ubuntu 12.04

["qy610426@xxxxxxx" <qy610426@xxxxxxx>]

Hi,wei:

         Thx for your answer.

          but, In the "/etc/default/grub":

   

GRUB_DEFAULT="Xen 4.1-amd64"

#GRUB_HIDDEN_TIMEOUT=0

GRUB_HIDDEN_TIMEOUT_QUIET=true

GRUB_TIMEOUT=2

GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`

GRUB_CMDLINE_LINUX_DEFAULT="dom0_max_vcpus=4 dom0_vcpus_pin"

GRUB_CMDLINE_LINUX=""

I configuration using the xen kernel with "GRUB_DEFAULT="Xen 4.1-amd64"",and then  attaching those options to the kernel with "GRUB_CMDLINE_LINUX_DEFAULT="dom0_max_vcpus=4 dom0_vcpus_pin""

and I don't understand your point or can you tell me which file I should configure,  do as you said.

 

  PS.Are you chinese?æçèèåå,ææ,èèä.

---

qy610426@xxxxxxx

 

From: Wei Liu

Date: 2014-10-14 23:31

To: qy610426@xxxxxxx

CC: xen-users; wei.liu2@xxxxxxxxxx

Subject: Re: [Xen-users] How to set Domain-0 VCPUS in Ubuntu 12.04

On Tue, Oct 14, 2014 at 04:25:25PM +0800, qy610426@xxxxxxx wrote:

>

> Hi,

>     I try to pin cpu cores for Domain-0,I use Ubuntu 12.04 ,xen 4.1.5. according to this article  "Tuning Xen for Performance"

>     1. I change the file "/etc/default/grub":

>    

> GRUB_DEFAULT="Xen 4.1-amd64"

> #GRUB_HIDDEN_TIMEOUT=0

> GRUB_HIDDEN_TIMEOUT_QUIET=true

> GRUB_TIMEOUT=2

> GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`

> GRUB_CMDLINE_LINUX_DEFAULT="dom0_max_vcpus=4 dom0_vcpus_pin"

> GRUB_CMDLINE_LINUX=""

>

 

You're attaching those options to Linux kernel, which is wrong.

 

They should be attached to Xen.

 

Wei.

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