我关注了 askubuntu.com 上的帖子，试图弄清楚为什么我的 Xeon E3-1231 不会超过 800MHz（我已从 BIOS 中禁用 Turbo）
州长准备履行职责
$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
performance
performance
performance
performance
performance
performance
performance
performance
lscpu 说（我仅粘贴部分输出）-
CPU MHz: 798.187
CPU max MHz: 3400.0000
CPU min MHz: 800.0000
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 cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm cpuid_fault epb invpcid_single pti ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid xsaveopt dtherm arat pln pts md_clear flush_l1d
cpufreq-info 说-
analyzing CPU 7:
driver: intel_pstate
CPUs which run at the same hardware frequency: 7
CPUs which need to have their frequency coordinated by software: 7
maximum transition latency: 4294.55 ms.
hardware limits: 800 MHz - 3.40 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 3.40 GHz and 3.40 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 798 MHz.
Turbo 似乎已被禁用-
$ cat /sys/devices/system/cpu/intel_pstate/no_turbo
1
i7z 说-
TURBO DISABLED on 4 Cores, Hyper Threading ON
Max Frequency without considering Turbo 3392.00 MHz (99.76 x [34])
Max TURBO Multiplier (if Enabled) with 1/2/3/4 Cores is 38x/38x/37x/36x
Real Current Frequency 798.06 MHz [99.76 x 8.00] (Max of below)
Core [core-id] :Actual Freq (Mult.) C0% Halt(C1)% C3 % C6 % C7 % Temp VCore
Core 1 [0]: 797.94 (8.00x) 1 58.3 1 0 40.6 25 0.7094
Core 2 [1]: 797.88 (8.00x) 1 23.6 0 0 76.4 21 0.7114
Core 3 [2]: 797.90 (8.00x) 1 29.8 0 0 70.2 24 0.7103
Core 4 [3]: 798.06 (8.00x) 1 21.7 0 0 78.3 23 0.7148
当我跑步时stress --cpu 8 --io 4 --vm 4 --vm-bytes 1024M --timeout 20s
然后i7z says-
TURBO DISABLED on 4 Cores, Hyper Threading ON
Max Frequency without considering Turbo 3392.00 MHz (99.76 x [34])
Max TURBO Multiplier (if Enabled) with 1/2/3/4 Cores is 38x/38x/37x/36x
Real Current Frequency 797.88 MHz [99.76 x 8.00] (Max of below)
Core [core-id] :Actual Freq (Mult.) C0% Halt(C1)% C3 % C6 % C7 % Temp VCore
Core 1 [0]: 797.88 (8.00x) 100 76.5 0 0 0 24 0.7094
Core 2 [1]: 797.88 (8.00x) 100 76.5 0 0 0 24 0.7065
Core 3 [2]: 797.88 (8.00x) 100 76.5 0 0 0 26 0.7103
Core 4 [3]: 797.88 (8.00x) 100 76.5 0 0 0 24 0.7148
Ubuntu 版本-
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.3 LTS
Release: 18.04
Codename: bionic
我很困惑，因为 cpufreq-info 上说了，frequency should be within 3.40 GHz and 3.40 GHz但它仍然保持在 800MHz。知道哪里出了问题吗？