WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] dom0-cpus problem

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] dom0-cpus problem
From: Nerijus Narmontas <n.narmontas@xxxxxxxxx>
Date: Wed, 22 Jul 2009 18:18:37 +0300
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
Delivery-date: Wed, 22 Jul 2009 08:19:13 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:cc:content-type; bh=ZFP+P6HNNdj6bmunK2byUcn6r85UMNQt2eTgElsvb+w=; b=hc1ySw4HeeN+jUD4ZWFFdjh9F6pXuAsg2e5XFvLcYZxzFb2OWHHvO2kIRQnhhtzKrD j1TCsYGdg+F8ItuUwIBrkBO+uK8X06FLUYv1URr8pxm6+TTy3V438POVPaiZcynbrsId +I4WJ2XL+9MqshBR+gLca0EO/dMKViAhS/Zqo=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=VbjBMDxSYrsNtENNKjUlPojSi7RLjw6FKpKzlNw7wl+lTDBQXslJDz4hBFjZT467ot qys7lvpChOZM1nwSg0QyEklItKHjsZ+Gg/LCzg9Ntk0eGG4EDDf+Oc02udW7lxUdGzLf JK0SUPLfmGUMBlh2oF4sJKpaXd7+wkmwQlF6s=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <20090721110138.GP24960@xxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <AEC6C66638C05B468B556EA548C1A77D016DDD27@trantor> <771c502a0907210353o49ed1f29i8a0540e0572b5d9f@xxxxxxxxxxxxxx> <20090721110138.GP24960@xxxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
On Tue, Jul 21, 2009 at 2:01 PM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
On Tue, Jul 21, 2009 at 01:53:25PM +0300, Nerijus Narmontas wrote:
> Hello,
> If I set (dom0-cpus 1) in /etc/xen/xend-config.sxp, after I gracefully
> shutdown domU, the domain stays in ---s- state.
>
> Is this fixed in 3.4.1-rc8?
>

Hello.

Please don't hijack threads - you replied to a thread about network problems
and gplpv drivers. Always start a new thread for new subjects.

What version are you seeing this behaviour with? Xen 3.4.0 ? What dom0
kernel version?

-- Pasi

Sorry for the threads thing.

root@xen1:/# more /etc/xen/xend-config.sxp | grep cpu
# In SMP system, dom0 will use dom0-cpus # of CPUS
# If dom0-cpus = 0, dom0 will take all cpus available
(dom0-cpus 1)

root@xen1:/# xm dmesg | grep Command
(XEN) Command line: console=com2 com2=115200,8n1

root@xen1:/# xm dmesg | grep VCPUs
(XEN) Dom0 has maximum 8 VCPUs

root@xen1:/# xm vcpu-list
Name                                ID  VCPU   CPU State   Time(s) CPU Affinity
Domain-0                             0     0     5   r--       9.2 any cpu
Domain-0                             0     1     -   --p       1.8 any cpu
Domain-0                             0     2     -   --p       1.7 any cpu
Domain-0                             0     3     -   --p       1.6 any cpu
Domain-0                             0     4     -   --p       1.4 any cpu
Domain-0                             0     5     -   --p       1.4 any cpu
Domain-0                             0     6     -   --p       1.5 any cpu
Domain-0                             0     7     -   --p       1.3 any cpu

root@xen1:/# xm create /etc/xen/dc3.conf
Using config file "/etc/xen/dc3.conf".
Started domain dc3 (id=1)

root@xen1:/# xm vcpu-list
Name                                ID  VCPU   CPU State   Time(s) CPU Affinity
Domain-0                             0     0     7   r--      36.5 any cpu
Domain-0                             0     1     -   --p       1.8 any cpu
Domain-0                             0     2     -   --p       1.7 any cpu
Domain-0                             0     3     -   --p       1.6 any cpu
Domain-0                             0     4     -   --p       1.4 any cpu
Domain-0                             0     5     -   --p       1.4 any cpu
Domain-0                             0     6     -   --p       1.5 any cpu
Domain-0                             0     7     -   --p       1.3 any cpu
dc3                                  1     0     0   -b-      15.2 0
dc3                                  1     1     1   -b-       6.8 1
dc3                                  1     2     2   -b-       7.5 2
dc3                                  1     3     3   -b-       8.0 3

After HVM Windows domU shutdown, it stays in ---s- state.

root@xen1:/# xm li
Name                                        ID   Mem VCPUs      State   Time(s)
Domain-0                                     0 24106     1     r-----     58.7
dc3                                          1  8192     4     ---s--     59.0

root@xen1:/# xm vcpu-list
Name                                ID  VCPU   CPU State   Time(s) CPU Affinity
Domain-0                             0     0     4   r--      48.4 any cpu
...
Domain-0                             0     7     -   --p       1.3 any cpu
dc3                                  1     0     0   ---      20.0 0
dc3                                  1     1     1   ---      10.9 1
dc3                                  1     2     2   ---      15.2 2
dc3                                  1     3     3   ---      12.9 3

The problem goes away if I tell Xen to boot with options dom0_max_vcpus=1 dom0_vcpus_pin.

What's the difference between Xen boot options to limit vcpus for dom0 to /etc/xen/xend-config.sxp?

I am running Xen 3.4.1-rc6 version.




_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
<Prev in Thread] Current Thread [Next in Thread>