Xen project Mailing List

Re: [Xen-users] Xen 4.6 and Intel MKL Linpack behaviour

To: Dario Faggioli <dario.faggioli@xxxxxxxxxx>

From: Marko Đukić <marko.djukic@xxxxxxxxx>

Date: Mon, 9 May 2016 15:37:38 +0200

Cc: xen-users@xxxxxxxxxxxxx, wei.liu2@xxxxxxxxxx, Roger Pau Monné <roger.pau@xxxxxxxxxx>

Delivery-date: Mon, 09 May 2016 13:38:26 +0000

List-id: Xen user discussion <xen-users.lists.xen.org>

On 9 May 2016 at 14:57, Dario Faggioli <dario.faggioli@xxxxxxxxxx> wrote: > On Mon, 2016-05-09 at 11:34 +0200, Roger Pau Monné wrote: >> > Well, I'm not sure. For example, if you give 4 vcpus to a PV guest > (via "vcpus=4" in the config file), 'cat /proc/cpuinfo', done from > inside the guest, should be showing info for 4 processors, is this the > case ro not? > > If it is not, there are other issues... > > Dario > -- > <<This happens because I choose it to happen!>> (Raistlin Majere) > ----------------------------------------------------------------- > Dario Faggioli, Ph.D, http://about.me/dario.faggioli > Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) > cat /proc/cpuinfo on HVM: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz stepping : 3 microcode : 0x19 cpu MHz : 3200.090 cache size : 6144 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 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 mmx fxsr sse sse2 ht syscall nx pdpe1gb rdtscp lm constant_tsc nopl eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase tsc_adjust bmi1 avx2 smep bmi2 invpcid xsaveopt bugs : bogomips : 6400.18 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz stepping : 3 microcode : 0x19 cpu MHz : 3200.090 cache size : 6144 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 4 apicid : 2 initial apicid : 2 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 mmx fxsr sse sse2 ht syscall nx pdpe1gb rdtscp lm constant_tsc nopl eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase tsc_adjust bmi1 avx2 smep bmi2 invpcid xsaveopt bugs : bogomips : 6400.18 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz stepping : 3 microcode : 0x19 cpu MHz : 3200.090 cache size : 6144 KB physical id : 0 siblings : 4 core id : 2 cpu cores : 4 apicid : 4 initial apicid : 4 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 mmx fxsr sse sse2 ht syscall nx pdpe1gb rdtscp lm constant_tsc nopl eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase tsc_adjust bmi1 avx2 smep bmi2 invpcid xsaveopt bugs : bogomips : 6400.18 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz stepping : 3 microcode : 0x19 cpu MHz : 3200.090 cache size : 6144 KB physical id : 0 siblings : 4 core id : 3 cpu cores : 4 apicid : 6 initial apicid : 6 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 mmx fxsr sse sse2 ht syscall nx pdpe1gb rdtscp lm constant_tsc nopl eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase tsc_adjust bmi1 avx2 smep bmi2 invpcid xsaveopt bugs : bogomips : 6400.18 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: cat /proc/cpuinfo on PVH: processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz stepping : 3 microcode : 0x19 cpu MHz : 3200.090 cache size : 6144 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu de pse tsc msr pae cx8 apic sep pge cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx pdpe1gb lm constant_tsc nopl aperfmperf eagerfpu pni pclmulqdq ssse3 sdbg fma cx16 sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase bmi1 avx2 bmi2 xsaveopt dtherm ida arat pln pts bugs : bogomips : 6400.18 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz stepping : 3 microcode : 0x19 cpu MHz : 3200.090 cache size : 6144 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu de pse tsc msr pae cx8 apic sep pge cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx pdpe1gb lm constant_tsc nopl aperfmperf eagerfpu pni pclmulqdq ssse3 sdbg fma cx16 sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase bmi1 avx2 bmi2 xsaveopt dtherm ida arat pln pts bugs : bogomips : 6400.18 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz stepping : 3 microcode : 0x19 cpu MHz : 3200.090 cache size : 6144 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu de pse tsc msr pae cx8 apic sep pge cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx pdpe1gb lm constant_tsc nopl aperfmperf eagerfpu pni pclmulqdq ssse3 sdbg fma cx16 sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase bmi1 avx2 bmi2 xsaveopt dtherm ida arat pln pts bugs : bogomips : 6400.18 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: processor : 3 vendor_id : GenuineIntel cpu family : 6 model : 60 model name : Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz stepping : 3 microcode : 0x19 cpu MHz : 3200.090 cache size : 6144 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu de pse tsc msr pae cx8 apic sep pge cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx pdpe1gb lm constant_tsc nopl aperfmperf eagerfpu pni pclmulqdq ssse3 sdbg fma cx16 sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase bmi1 avx2 bmi2 xsaveopt dtherm ida arat pln pts bugs : bogomips : 6400.18 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: As you can see, in HVM guest shows 4 cpus and each entry shows "cpu cores: 4" and a different core id for each entry. In PVH guest shows "cpu cores: 1" and "core_id: 0" for each entry. _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxx http://lists.xen.org/xen-users

©2013 Xen Project, A Linux Foundation Collaborative Project. All Rights Reserved.
Linux Foundation is a registered trademark of The Linux Foundation.
Xen Project is a trademark of The Linux Foundation.