(I mentioned it in another thread, so here a more detailed report)
$ phoronix-test-suite system-info
Phoronix Test Suite v5.2.1
System Information
Hardware:
Processor: Intel Core i7-3930K @ 5.70GHz (12 Cores), Motherboard: ASUS P9X79 PRO, Chipset: Intel Xeon E5/Core, Memory: 32768MB, Disk: 240GB Patriot Pyro SE + 128GB Patriot Torqx 12, Graphics: NVIDIA GeForce GTX 680 2048MB (1084/3004MHz), Audio: Intel C600/X79, Monitor: DELL UP2414Q + Acer B243HL, Network: Intel 82579V Gigabit Connection
Software:
OS: Fedora 20, Kernel: 3.16.3-200.fc20.x86_64 (x86_64), Desktop: KDE 4.14.1, Display Server: X Server 1.14.4, Display Driver: NVIDIA 343.22, OpenGL: 4.3.0, Compiler: CUDA 5.0, File-System: ext4, Screen Resolution: 5760x2160
The detection here is wrong. My CPU is actually not running on 5.7 GHz.
Here an excerpt from my /proc/cpuinfo:
---------------------------- /proc/cpuinfo ----------------------------
processor : 11
vendor_id : GenuineIntel
cpu family : 6
model : 45
model name : Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz
stepping : 7
microcode : 0x710
cpu MHz : 3300.125
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 5
cpu cores : 6
apicid : 11
initial apicid : 11
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 est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 8088.49
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
--------------------------------------------------------
It seems with TURBO et al it is actually faster, but far from 5.2 GHz, here the information from i7z:
------------------------ i7z ---------------------------------------------------
Cpu speed from cpuinfo 4044.00Mhz
cpuinfo might be wrong if cpufreq is enabled. To guess correctly try estimating via tsc
Linux's inbuilt cpu_khz code emulated now
True Frequency (without accounting Turbo) 4043 MHz
CPU Multiplier 32x || Bus clock frequency (BCLK) 126.34 MHz
Socket [0] - [physical cores=6, logical cores=12, max online cores ever=6]
TURBO ENABLED on 6 Cores, Hyper Threading ON
Max Frequency without considering Turbo 4169.34 MHz (126.34 x [33])
Max TURBO Multiplier (if Enabled) with 1/2/3/4/5/6 Cores is 57x/57x/57x/57x/57x/57x
Real Current Frequency 4199.52 MHz [126.34 x 33.24] (Max of below)
Core [core-id] :Actual Freq (Mult.) C0% Halt(C1)% C3 % C6 % C7 % Temp
Core 1 [0]: 4167.67 (32.99x) 1.3 1.47 1 0 96.2 33
Core 2 [1]: 4168.81 (33.00x) 2.69 3.93 1 0 92.3 29
Core 3 [2]: 4167.62 (32.99x) 1.48 1.29 0 0 97.2 32
Core 4 [3]: 4199.52 (33.24x) 1 100 0 0 0 47
Core 5 [4]: 4169.16 (33.00x) 8.87 3.09 0 0 87.8 31
Core 6 [5]: 4168.21 (32.99x) 1.92 4.83 1 0 92.2 32
34
C0 = Processor running without halting
C1 = Processor running with halts (States >C0 are power saver)
C3 = Cores running with PLL turned off and core cache turned off
C6 = Everything in C3 + core state saved to last level cache
Above values in table are in percentage over the last 1 sec
[core-id] refers to core-id number in /proc/cpuinfo
---------------------------------------------------------------
A short glance at the /sys/bus/cpu/devices/cpu0/cpufreq/* files indicate that the reason must be
/sys/bus/cpu/devices/cpu0/cpufreq/scaling_max_freq and cpuinfo_max_freq which contains the value 5.7 GHz (I use intel_pstate/powersave governor).
Seriously I dont know, why there are those 5.7 GHz in the max_freq-files, but under no load ever I have saw him reaching that.
$ phoronix-test-suite system-info
Phoronix Test Suite v5.2.1
System Information
Hardware:
Processor: Intel Core i7-3930K @ 5.70GHz (12 Cores), Motherboard: ASUS P9X79 PRO, Chipset: Intel Xeon E5/Core, Memory: 32768MB, Disk: 240GB Patriot Pyro SE + 128GB Patriot Torqx 12, Graphics: NVIDIA GeForce GTX 680 2048MB (1084/3004MHz), Audio: Intel C600/X79, Monitor: DELL UP2414Q + Acer B243HL, Network: Intel 82579V Gigabit Connection
Software:
OS: Fedora 20, Kernel: 3.16.3-200.fc20.x86_64 (x86_64), Desktop: KDE 4.14.1, Display Server: X Server 1.14.4, Display Driver: NVIDIA 343.22, OpenGL: 4.3.0, Compiler: CUDA 5.0, File-System: ext4, Screen Resolution: 5760x2160
The detection here is wrong. My CPU is actually not running on 5.7 GHz.
Here an excerpt from my /proc/cpuinfo:
---------------------------- /proc/cpuinfo ----------------------------
processor : 11
vendor_id : GenuineIntel
cpu family : 6
model : 45
model name : Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz
stepping : 7
microcode : 0x710
cpu MHz : 3300.125
cache size : 12288 KB
physical id : 0
siblings : 12
core id : 5
cpu cores : 6
apicid : 11
initial apicid : 11
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 est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 8088.49
clflush size : 64
cache_alignment : 64
address sizes : 46 bits physical, 48 bits virtual
power management:
--------------------------------------------------------
It seems with TURBO et al it is actually faster, but far from 5.2 GHz, here the information from i7z:
------------------------ i7z ---------------------------------------------------
Cpu speed from cpuinfo 4044.00Mhz
cpuinfo might be wrong if cpufreq is enabled. To guess correctly try estimating via tsc
Linux's inbuilt cpu_khz code emulated now
True Frequency (without accounting Turbo) 4043 MHz
CPU Multiplier 32x || Bus clock frequency (BCLK) 126.34 MHz
Socket [0] - [physical cores=6, logical cores=12, max online cores ever=6]
TURBO ENABLED on 6 Cores, Hyper Threading ON
Max Frequency without considering Turbo 4169.34 MHz (126.34 x [33])
Max TURBO Multiplier (if Enabled) with 1/2/3/4/5/6 Cores is 57x/57x/57x/57x/57x/57x
Real Current Frequency 4199.52 MHz [126.34 x 33.24] (Max of below)
Core [core-id] :Actual Freq (Mult.) C0% Halt(C1)% C3 % C6 % C7 % Temp
Core 1 [0]: 4167.67 (32.99x) 1.3 1.47 1 0 96.2 33
Core 2 [1]: 4168.81 (33.00x) 2.69 3.93 1 0 92.3 29
Core 3 [2]: 4167.62 (32.99x) 1.48 1.29 0 0 97.2 32
Core 4 [3]: 4199.52 (33.24x) 1 100 0 0 0 47
Core 5 [4]: 4169.16 (33.00x) 8.87 3.09 0 0 87.8 31
Core 6 [5]: 4168.21 (32.99x) 1.92 4.83 1 0 92.2 32
34
C0 = Processor running without halting
C1 = Processor running with halts (States >C0 are power saver)
C3 = Cores running with PLL turned off and core cache turned off
C6 = Everything in C3 + core state saved to last level cache
Above values in table are in percentage over the last 1 sec
[core-id] refers to core-id number in /proc/cpuinfo
---------------------------------------------------------------
A short glance at the /sys/bus/cpu/devices/cpu0/cpufreq/* files indicate that the reason must be
/sys/bus/cpu/devices/cpu0/cpufreq/scaling_max_freq and cpuinfo_max_freq which contains the value 5.7 GHz (I use intel_pstate/powersave governor).
Seriously I dont know, why there are those 5.7 GHz in the max_freq-files, but under no load ever I have saw him reaching that.
Comment