Yes, I have run both of them on same machine. And I
am running libvirt 1.1.0. So, I guess it's not a problem
of older version.
Thanks
~Peeyush Gupta
From: Daniel P. Berrange <berrange@xxxxxxxxxx>
To: Peeyush Gupta <gpeeyush@xxxxxxxxx>
Cc: "libvirt-users@xxxxxxxxxx" <libvirt-users@xxxxxxxxxx>
Sent: Tuesday, 17 September 2013 3:19 PM
Subject: Re: [libvirt-users] Finding out CPU topology.
On Tue, Sep 17, 2013 at 05:41:12PM +0800, Peeyush Gupta wrote:
> Hi all,
>
> I have been trying to find out cpu topology using libvirt. When
> I do 'virsh capabilites', I find this inside <topology> tag:
>
>
> <topology>
> <cells num='1'>
> <cell id='0'>
> <memory unit='KiB'>3908488</memory>
> <cpus num='4'>
> <cpu id='0' socket_id='0' core_id='0' siblings='0'/>
> <cpu id='1' socket_id='0' core_id='0' siblings='1'/>
> <cpu id='2' socket_id='0' core_id='1' siblings='2'/>
> <cpu id='3' socket_id='0' core_id='1' siblings='3'/>
> </cpus>
> </cell>
> </cells>
> </topology>
>
> But when I use the 'getCapbilities()' function of the python binding,
> the result is:
> <topology>
> <cells num='1'>
> <cell id='0'>
> <cpus num='4'>
> <cpu id='0'/>
> <cpu id='1'/>
> <cpu id='2'/>
> <cpu id='3'/>
> </cpus>
> </cell>
> </cells>
> </topology>\n
>
> As you can see this doesnt give any information about socket/core/thread etc.
> What I an interested to know is that is it a limitation of python binding or libvirt
> C API itself? How can I get the whole topology without just parsing the output
> of virsh capabilities?
Did you really run these two examples on the same machine, with the same
libvirt URI ? Both virsh and the python binding call the same libvirt API
'virConnectGetCapabilities' so will return the same data if run against
the same libvirt. The socket_id, core_id and siblings data is a relatively
new feature we added, so older libvirt won't show it.
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
_______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users
