<html><head></head><body>Test <div class="gmail_quote"> libvirt-users-request@redhat.com schrieb:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <pre class="k9mail">Send libvirt-users mailing list submissions to libvirt-users@redhat.com To subscribe or unsubscribe via the World Wide Web, visit <a href="https://www.redhat.com/mailman/listinfo/libvirt-users">https://www.redhat.com/mailman/listinfo/libvirt-users</a> or, via email, send a message with subject or body 'help' to libvirt-users-request@redhat.com You can reach the person managing the list at libvirt-users-owner@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) <hr /> Message: 1 Date: Tue, 17 Sep 2013 17:41:12 +0800 (SGT) From: Peeyush Gupta <gpeeyush@ymail.com> To: "libvirt-users@redhat.com" <libvirt-users@redhat.com> Subject: [libvirt-users] Finding out CPU topology. Message-ID: <1379410872.26498.YahooMailNeo@web194604.mail.sg3.yahoo.com> 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: <<a href="https://www.redhat.com/archives/libvirt-users/attachments/20130917/ff834444/attachment.html">https://www.redhat.com/archives/libvirt-users/attachments/20130917/ff834444/attachment.html</a>> <hr /> Message: 2 Date: Tue, 17 Sep 2013 10:49:29 +0100 From: "Daniel P. Berrange" <berrange@redhat.com> To: Peeyush Gupta <gpeeyush@ymail.com> Cc: "libvirt-users@redhat.com" <libvirt-users@redhat.com> Subject: Re: [libvirt-users] Finding out CPU topology. Message-ID: <20130917094929.GD28204@redhat.com> Content-Type: text/plain; charset=utf-8 On Tue, Sep 17, 2013 at 05:41:12PM +0800, Peeyush Gupta wrote: <blockquote class="gmail_quote" style="margin: 0pt 0pt 1ex 0.8ex; border-left: 1px solid #729fcf; padding-left: 1ex;">Hi all, I have been trying to find out cpu topology using libvirt. When I do 'virsh capabilites', I find this inside <topology> tag: <! br /><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?</blockquote> 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</pre></blockquote></div> -- Diese Nachricht wurde von meinem Android-Mobiltelefon mit K-9 Mail gesendet.</body></html>