It looks like this does not happen on an AMD CPU but it does happen on the following HW:
description: Rack Mount Chassis product: ProLiant DL380p Gen8 (653200-B21) vendor: HP serial: xxxxxxxxxxxxxxxxxxxxxxxx width: 64 bits capabilities: smbios-2.7 dmi-2.7 vsyscall32 configuration: boot=normal chassis=rackmount family=ProLiant sku=653200-B21 uuid=36353332-3030-435A-3233-35303xxxxxxxxx *-core description: Motherboard physical id: 0 *-firmware description: BIOS vendor: HP physical id: 0 version: P70 date: 09/18/2013 size: 64KiB capacity: 8128KiB capabilities: pci pnp upgrade shadowing escd cdboot bootselect edd int13floppy360 int13floppy1200 int13floppy720 int5printscreen int9keyboard int14serial int17printer int10video acpi usb biosbootspecification netboot *-cpu:0 description: CPU product: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz vendor: Intel Corp. physical id: 400 bus info: cpu@0 version: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz slot: Proc 1 size: 1200MHz capacity: 1200MHz width: 64 bits clock: 100MHz capabilities: x86-64 fpu fpu_exception wp 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 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 f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms cpufreq configuration: cores=8 enabledcores=8 threads=16 *-cache:0 description: L1 cache physical id: 710 slot: Processor 1 Internal L1 Cache size: 256KiB capacity: 384KiB capabilities: burst internal write-back data *-cache:1 description: L2 cache physical id: 720 slot: Processor 1 Internal L2 Cache size: 2MiB capacity: 3MiB capabilities: burst internal write-back *-cache:2 description: L3 cache physical id: 730 slot: Processor 1 Internal L3 Cache size: 25MiB capacity: 30MiB capabilities: burst internal write-back *-cpu:1 description: CPU product: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz vendor: Intel Corp. physical id: 401 bus info: cpu@1 version: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz slot: Proc 2 size: 1200MHz capacity: 1200MHz width: 64 bits clock: 100MHz capabilities: x86-64 fpu fpu_exception wp 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 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 f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms cpufreq configuration: cores=8 enabledcores=8 threads=16 *-cache:0 description: L1 cache physical id: 716 slot: Processor 2 Internal L1 Cache size: 256KiB capacity: 384KiB capabilities: burst internal write-back data *-cache:1 description: L2 cache physical id: 726 slot: Processor 2 Internal L2 Cache size: 2MiB capacity: 3MiB capabilities: burst internal write-back *-cache:2 description: L3 cache physical id: 736 slot: Processor 2 Internal L3 Cache size: 25MiB capacity: 30MiB capabilities: burst internal write-back
It looks like this does not happen on an AMD CPU but it does happen on the following HW:
description: Rack Mount Chassis xxxxxxxxx 3030-435A- 3233-35303xxxxx xxxx
description: BIOS
capabilities : pci pnp upgrade shadowing escd cdboot bootselect edd int13floppy360 int13floppy1200 int13floppy720 int5printscreen int9keyboard int14serial int17printer int10video acpi usb biosbootspecifi cation netboot
description: CPU
capabilities : x86-64 fpu fpu_exception wp 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 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 f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms cpufreq
configuratio n: cores=8 enabledcores=8 threads=16
descripti on: L1 cache
physical id: 710
capacity: 384KiB
capabilit ies: burst internal write-back data
descripti on: L2 cache
physical id: 720
capacity: 3MiB
capabilit ies: burst internal write-back
descripti on: L3 cache
physical id: 730
capacity: 30MiB
capabilit ies: burst internal write-back
description: CPU
capabilities : x86-64 fpu fpu_exception wp 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 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 f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms cpufreq
configuratio n: cores=8 enabledcores=8 threads=16
descripti on: L1 cache
physical id: 716
capacity: 384KiB
capabilit ies: burst internal write-back data
descripti on: L2 cache
physical id: 726
capacity: 3MiB
capabilit ies: burst internal write-back
descripti on: L3 cache
physical id: 736
capacity: 30MiB
capabilit ies: burst internal write-back
product: ProLiant DL380p Gen8 (653200-B21)
vendor: HP
serial: xxxxxxxxxxxxxxx
width: 64 bits
capabilities: smbios-2.7 dmi-2.7 vsyscall32
configuration: boot=normal chassis=rackmount family=ProLiant sku=653200-B21 uuid=36353332-
*-core
description: Motherboard
physical id: 0
*-firmware
vendor: HP
physical id: 0
version: P70
date: 09/18/2013
size: 64KiB
capacity: 8128KiB
*-cpu:0
product: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz
vendor: Intel Corp.
physical id: 400
bus info: cpu@0
version: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz
slot: Proc 1
size: 1200MHz
capacity: 1200MHz
width: 64 bits
clock: 100MHz
*-cache:0
slot: Processor 1 Internal L1 Cache
size: 256KiB
*-cache:1
slot: Processor 1 Internal L2 Cache
size: 2MiB
*-cache:2
slot: Processor 1 Internal L3 Cache
size: 25MiB
*-cpu:1
product: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz
vendor: Intel Corp.
physical id: 401
bus info: cpu@1
version: Intel(R) Xeon(R) CPU E5-2667 v2 @ 3.30GHz
slot: Proc 2
size: 1200MHz
capacity: 1200MHz
width: 64 bits
clock: 100MHz
*-cache:0
slot: Processor 2 Internal L1 Cache
size: 256KiB
*-cache:1
slot: Processor 2 Internal L2 Cache
size: 2MiB
*-cache:2
slot: Processor 2 Internal L3 Cache
size: 25MiB