Re: [libvirt-users] 'virsh capabilities' on Debian Wheezy-amd64 reports different cpu to Wheezy-i386 (on same hardware)

On Mon, Mar 03, 2014 at 10:30:11AM +0000, Struan Bartlett wrote: > Hi Martin > > Thanks for your response. Here's the output of that grep: > > # grep ^flags /proc/cpuinfo | sort -u > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca > cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall > nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl > xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor > ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 > x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat xsaveopt > pln pts dtherm tpr_shadow vnmi flexpriority ept vpid > > I've just managed to install the libvirt-bin:amd64 package on the same > machine, on the wheezy-i386 distribution. The output of 'virsh > capabilities' is now reported correctly, and my VMs that required > SandyBridge are now booting. > > Have you any further suggestions? > Oh, I missed the fact that it was 32 bit distro. In that case, I guess some cpu features won't be available. No other ideas.

Martin > Struan > > On 03/03/2014 10:00, Martin Kletzander wrote: >> On Fri, Feb 28, 2014 at 03:45:01PM +0000, Struan Bartlett wrote: >>> Hi >>> >>> On a range of Dell servers containing Intel 64bit processors, 'virsh >>> capabilities' reports the cpu differently on Debian Wheezy-amd64 and >>> Wheezy-i386. The results given by the Wheezy-i386 version seem very >>> wrong (since n270 is an Atom processor). Apart from architecture, the >>> package versions of libvirt-bin are identical: 1.2.1-1~bpo70+1. >>> /usr/share/libvirt/cpu_map.xml files are identical. Is this a known >>> issue? Details for one server are: >>> >>> # cat /proc/cpuinfo| head -n 26 >>> processor : 0 >>> vendor_id : GenuineIntel >>> cpu family : 6 >>> model : 45 >>> model name : Intel(R) Xeon(R) CPU E5-2650L 0 @ 1.80GHz >>> stepping : 7 >>> microcode : 0x70d >>> cpu MHz : 1800.054 >>> cache size : 20480 KB >>> physical id : 0 >>> siblings : 16 >>> core id : 0 >>> cpu cores : 8 >>> apicid : 0 >>> initial apicid : 0 >>> fpu : yes >>> fpu_exception : yes >>> cpuid level : 13 >>> wp : yes >>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge >>> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe >>> syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good >>> nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 >>> monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 >>> sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat >>> xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid >>> bogomips : 3600.10 >>> clflush size : 64 >>> cache_alignment : 64 >>> address sizes : 46 bits physical, 48 bits virtual >>> power management: >>> >>> ... >>> </proc/cpuinfo for processors 1..31 snipped here for brevity> >>> >> Check if all 32 CPUs have *exactly* the same flags, I remember an >> issue when we reported a wrong cpu because the probing code was >> scheduled on one of them which had one flag missing. If package and >> cpu_map.xml are the same, this is the only thing I can think of. >> Simple 'grep ^flags /proc/cpuinfo | sort -u' should do. If only one >> line is printed out than I don't know where the problem might be... >> >> Martin >> >>> # Running Wheezy-amd64 libvirt-bin1.2.1-1~bpo70+1 >>> # virsh capabilities >>> >>> <cpu> >>> <arch>x86_64</arch> >>> <model>SandyBridge</model> >>> <vendor>Intel</vendor> >>> <topology sockets='2' cores='8' threads='2'/> >>> <feature name='pdpe1gb'/> >>> <feature name='osxsave'/> >>> <feature name='dca'/> >>> <feature name='pcid'/> >>> <feature name='pdcm'/> >>> <feature name='xtpr'/> >>> <feature name='tm2'/> >>> <feature name='est'/> >>> <feature name='smx'/> >>> <feature name='vmx'/> >>> <feature name='ds_cpl'/> >>> <feature name='monitor'/> >>> <feature name='dtes64'/> >>> <feature name='pbe'/> >>> <feature name='tm'/> >>> <feature name='ht'/> >>> <feature name='ss'/> >>> <feature name='acpi'/> >>> <feature name='ds'/> >>> <feature name='vme'/> >>> </cpu> >>> >>> >>> # Running Wheezy-i386 libvirt-bin1.2.1-1~bpo70+1 >>> # virsh capabilities >>> >>> <cpu> >>> <arch>x86_64</arch> >>> <model>n270</model> >>> <vendor>Intel</vendor> >>> <topology sockets='2' cores='8' threads='2'/> >>> <feature name='lahf_lm'/> >>> <feature name='lm'/> >>> <feature name='rdtscp'/> >>> <feature name='pdpe1gb'/> >>> <feature name='avx'/> >>> <feature name='osxsave'/> >>> <feature name='xsave'/> >>> <feature name='aes'/> >>> <feature name='tsc-deadline'/> >>> <feature name='popcnt'/> >>> <feature name='x2apic'/> >>> <feature name='sse4.2'/> >>> <feature name='sse4.1'/> >>> <feature name='dca'/> >>> <feature name='pcid'/> >>> <feature name='pdcm'/> >>> <feature name='xtpr'/> >>> <feature name='cx16'/> >>> <feature name='tm2'/> >>> <feature name='est'/> >>> <feature name='smx'/> >>> <feature name='vmx'/> >>> <feature name='ds_cpl'/> >>> <feature name='dtes64'/> >>> <feature name='pclmuldq'/> >>> <feature name='pbe'/> >>> <feature name='tm'/> >>> <feature name='ht'/> >>> <feature name='ss'/> >>> <feature name='acpi'/> >>> <feature name='ds'/> >>> <feature name='pse36'/> >>> </cpu> >>> >>> Kind regards >>> >>> Struan Bartlett >>> >>> -- >>> >>> Struan Bartlett >>> NewsNow Publishing Limited >>> >>> Tel: +44 (0)845 838 8890 >>> Fax: +44 (0)845 838 8898 >>> >>> The UK's #1 News Portal: >>> >>> >>> Also tailored for Mobile: >>> >>> >>> Now with FREE Personalisation: >>> >>> >>> Bespoke B2B Internet News Monitoring: >>> > Internet News Monitoring >>> <http://www.newsnow.co.uk/services/newsmonitoring/> >>> >>> Bespoke B2B Headlines for Websites: >>> >>> >>> NewsNow Publishing Limited, trading also as NewsNow.co.uk, is a company >>> registered in England and Wales under company no. 3435857 with >>> registered office The Euston Office, 1 Euston Square, 40 Melton Street, >>> London NW1 2FD >>> >>> _______________________________________________ >>> libvirt-users mailing list >>> libvirt-users(a)redhat.com >>> https://www.redhat.com/mailman/listinfo/libvirt-users > -- > > Struan Bartlett > NewsNow Publishing Limited > > Tel: +44 (0)845 838 8890 > Fax: +44 (0)845 838 8898 > > The UK's #1 News Portal: > > > Also tailored for Mobile: > > > Now with FREE Personalisation: > > > Bespoke B2B Internet News Monitoring: > > Internet News Monitoring > <http://www.newsnow.co.uk/services/newsmonitoring/> > > Bespoke B2B Headlines for Websites: > > > NewsNow Publishing Limited, trading also as NewsNow.co.uk, is a company > registered in England and Wales under company no. 3435857 with > registered office The Euston Office, 1 Euston Square, 40 Melton Street, > London NW1 2FD >

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