Re: [libvirt-users] libvirt-users Digest, Vol 45, Issue 28

Send libvirt-users mailing list submissions to libvirt-users(a)redhat.com To subscribe or unsubscribe via the World Wide Web, visit https://www.redhat.com/mailman/listinfo/libvirt-users or, via email, send a message with subject or body 'help' to libvirt-users-request(a)redhat.com You can reach the person managing the list at libvirt-users-owner(a)redhat.com When replying, please edit your Subject line so it is more specific than "Re: Contents of libvirt-users digest..." Today's Topics: 1. Finding out CPU topology. (Peeyush Gupta) 2. Re: Finding out CPU topology. (Daniel P. Berrange) 3. Re: Finding out CPU topology. (Peeyush Gupta) ---------------------------------------------------------------------- Message: 1 Date: Tue, 17 Sep 2013 17:41:12 +0800 (SGT) From: Peeyush Gupta <gpeeyush(a)ymail.com&gt; To: &quot;libvirt-users(a)redhat.com&quot; <libvirt-users(a)redhat.com&gt; Subject: [libvirt-users] Finding out CPU topology. Message-ID: <1379410872.26498.YahooMailNeo(a)web194604.mail.sg3.yahoo.com&gt; Content-Type: text/plain; charset="iso-8859-1" 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? Thanks. ~Peeyush Gupta -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.redhat.com/archives/libvirt-users/attachments/20130917/ff8344... ------------------------------ Message: 2 Date: Tue, 17 Sep 2013 10:49:29 +0100 From: "Daniel P. Berrange" <berrange(a)redhat.com&gt; To: Peeyush Gupta <gpeeyush(a)ymail.com&gt; Cc: &quot;libvirt-users(a)redhat.com&quot; <libvirt-users(a)redhat.com&gt; Subject: Re: [libvirt-users] Finding out CPU topology. Message-ID: <20130917094929.GD28204(a)redhat.com&gt; Content-Type: text/plain; charset=utf-8 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 :| ------------------------------ Message: 3 Date: Tue, 17 Sep 2013 17:54:40 +0800 (SGT) From: Peeyush Gupta <gpeeyush(a)ymail.com&gt; To: "Daniel P. Berrange" <berrange(a)redhat.com&gt; Cc: &quot;libvirt-users(a)redhat.com&quot; <libvirt-users(a)redhat.com&gt; Subject: Re: [libvirt-users] Finding out CPU topology. Message-ID: <1379411680.85399.YahooMailNeo(a)web194601.mail.sg3.yahoo.com&gt; Content-Type: text/plain; charset="iso-8859-1" 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(a)redhat.com&gt; To: Peeyush Gupta <gpeeyush(a)ymail.com&gt; Cc: &quot;libvirt-users(a)redhat.com&quot; <libvirt-users(a)redhat.com&gt; 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 :| -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.redhat.com/archives/libvirt-users/attachments/20130917/df8c7f... ------------------------------ _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users End of libvirt-users Digest, Vol 45, Issue 28 *********************************************