/ proc / cpuinfoは、ゼロcpuクロック速度を示しています

Question

/procファイルシステムのcpuinfoファイルがCPUクロック速度をゼロとして表示するという興味深い問題が発生しました。これは、仮想化のない物理ホストです。誰かが私にこれの背後にあるいくつかの考えられる理由を説明できますか？

$ cat /proc/cpuinfo | grep -i "cpu Mhz" cpu MHz : 0.000 cpu MHz : 0.000 cpu MHz : 0.000 cpu MHz : 0.000

# dmidecode | grep -A 20 CPU Socket Designation: CPU1 Type: Central Processor Family: Xeon Manufacturer: Intel(R) Corporation ID: D7 06 02 00 FF FB EB BF Signature: Type 0, Family 6, Model 45, Stepping 7 Flags: FPU (Floating-point unit on-chip) VME (Virtual mode extension) DE (Debugging extension) PSE (Page size extension) TSC (Time stamp counter) MSR (Model specific registers) PAE (Physical address extension) MCE (Machine check exception) CX8 (CMPXCHG8 instruction supported) APIC (On-chip APIC hardware supported) SEP (Fast system call) MTRR (Memory type range registers) PGE (Page global enable) MCA (Machine check architecture) -- Version: Intel(R) Xeon(R) CPU E5-2670 @ 2.60GHz Voltage: 0.8 V External Clock: 100 MHz Max Speed: 4000 MHz Current Speed: 2600 MHz Status: Populated, Enabled Upgrade: <OUT OF SPEC> L1 Cache Handle: 0x0007 L2 Cache Handle: 0x0008 L3 Cache Handle: 0x0009 Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified Core Count: 8 Core Enabled: 8 Thread Count: 16 Characteristics: 64-bit capable Handle 0x0005, DMI type 4, 42 bytes Processor Information Socket Designation: CPU2 Type: Central Processor Family: Xeon Manufacturer: Intel(R) Corporation ID: D7 06 02 00 FF FB EB BF Signature: Type 0, Family 6, Model 45, Stepping 7 Flags: FPU (Floating-point unit on-chip) VME (Virtual mode extension) DE (Debugging extension) PSE (Page size extension) TSC (Time stamp counter) MSR (Model specific registers) PAE (Physical address extension) MCE (Machine check exception) CX8 (CMPXCHG8 instruction supported) APIC (On-chip APIC hardware supported) SEP (Fast system call) MTRR (Memory type range registers) PGE (Page global enable) MCA (Machine check architecture) -- Version: Intel(R) Xeon(R) CPU E5-2670 @ 2.60GHz Voltage: 0.8 V External Clock: 100 MHz Max Speed: 4000 MHz Current Speed: 2600 MHz Status: Populated, Enabled Upgrade: <OUT OF SPEC> L1 Cache Handle: 0x000B L2 Cache Handle: 0x000C L3 Cache Handle: 0x000D Serial Number: Not Specified Asset Tag: Not Specified Part Number: Not Specified Core Count: 8 Core Enabled: 8 Thread Count: 16 Characteristics: 64-bit capable Handle 0x0006, DMI type 7, 19 bytes Cache Information -- Designation: SLOT1_PCIE_G3_X16(CPU1) Type: x16 <OUT OF SPEC> Current Usage: Available Length: Long Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x0015, DMI type 9, 17 bytes System Slot Information Designation: SLOT2_PCIE_G3_X16(CPU1) Type: x16 <OUT OF SPEC> Current Usage: Available Length: Long Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x0016, DMI type 9, 17 bytes System Slot Information Designation: SLOT3_PCIE_G3_X8(CPU2) Type: x8 <OUT OF SPEC> Current Usage: Available Length: Long Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x0017, DMI type 9, 17 bytes System Slot Information Designation: SLOT4_PCIE_G3_X16(CPU2) Type: x16 <OUT OF SPEC> Current Usage: Available Length: Long Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x0018, DMI type 10, 6 bytes On Board Device Information Type: Video Status: Enabled Description: ASPEED Technology, Inc. AST GPU 0.96.00 (VGA1) Handle 0x0019, DMI type 10, 6 bytes On Board Device Information Type: Ethernet Status: Enabled Description: LOM 1G I350-BT2 (LAN1) -- Bank Locator: CPU1 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: 1333 MHz (0.8 ns) Manufacturer: CE00B304CE00 Serial Number: 36119A9B Asset Tag: 02171321 Part Number: M393B2G70BH0-YH9 Handle 0x001F, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: DIMM_A5 Bank Locator: CPU1 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: Unknown Manufacturer: NO DIMM Serial Number: NO DIMM Asset Tag: NO DIMM Part Number: NO DIMM Handle 0x0020, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: 0x002F Total Width: 64 bits Data Width: 64 bits Size: 16384 MB Form Factor: DIMM Set: None Locator: DIMM_A2 Bank Locator: CPU1 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: 1333 MHz (0.8 ns) Manufacturer: CE00B304CE00 Serial Number: 36119ADA Asset Tag: 02171321 Part Number: M393B2G70BH0-YH9 Handle 0x0021, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: DIMM_A6 Bank Locator: CPU1 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: Unknown Manufacturer: NO DIMM Serial Number: NO DIMM Asset Tag: NO DIMM Part Number: NO DIMM Handle 0x0022, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: 0x0030 Total Width: 64 bits Data Width: 64 bits Size: 16384 MB Form Factor: DIMM Set: None Locator: DIMM_A3 Bank Locator: CPU1 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: 1333 MHz (0.8 ns) Manufacturer: CE00B304CE00 Serial Number: 3611991C Asset Tag: 02171321 Part Number: M393B2G70BH0-YH9 Handle 0x0023, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: DIMM_A7 Bank Locator: CPU1 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: Unknown Manufacturer: NO DIMM Serial Number: NO DIMM Asset Tag: NO DIMM Part Number: NO DIMM Handle 0x0024, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: 0x0031 Total Width: 64 bits Data Width: 64 bits Size: 16384 MB Form Factor: DIMM Set: None Locator: DIMM_A4 Bank Locator: CPU1 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: 1333 MHz (0.8 ns) Manufacturer: CE00B304CE00 Serial Number: 361196BF Asset Tag: 02171321 Part Number: M393B2G70BH0-YH9 Handle 0x0025, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: DIMM_A8 Bank Locator: CPU1 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: Unknown Manufacturer: NO DIMM Serial Number: NO DIMM Asset Tag: NO DIMM Part Number: NO DIMM Handle 0x0026, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: 0x0032 Total Width: 64 bits Data Width: 64 bits Size: 16384 MB Form Factor: DIMM Set: None Locator: DIMM_B1 Bank Locator: CPU2 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: 1333 MHz (0.8 ns) Manufacturer: CE00B304CE00 Serial Number: 36119A9C Asset Tag: 02171321 Part Number: M393B2G70BH0-YH9 Handle 0x0027, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: DIMM_B5 Bank Locator: CPU2 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: Unknown Manufacturer: NO DIMM Serial Number: NO DIMM Asset Tag: NO DIMM Part Number: NO DIMM Handle 0x0028, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: 0x0033 Total Width: 64 bits Data Width: 64 bits Size: 16384 MB Form Factor: DIMM Set: None Locator: DIMM_B2 Bank Locator: CPU2 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: 1333 MHz (0.8 ns) Manufacturer: CE00B304CE00 Serial Number: 36119696 Asset Tag: 02171321 Part Number: M393B2G70BH0-YH9 Handle 0x0029, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: DIMM_B6 Bank Locator: CPU2 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: Unknown Manufacturer: NO DIMM Serial Number: NO DIMM Asset Tag: NO DIMM Part Number: NO DIMM Handle 0x002A, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: 0x0034 Total Width: 64 bits Data Width: 64 bits Size: 16384 MB Form Factor: DIMM Set: None Locator: DIMM_B3 Bank Locator: CPU2 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: 1333 MHz (0.8 ns) Manufacturer: CE00B304CE00 Serial Number: 361196C0 Asset Tag: 02171321 Part Number: M393B2G70BH0-YH9 Handle 0x002B, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: DIMM_B7 Bank Locator: CPU2 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: Unknown Manufacturer: NO DIMM Serial Number: NO DIMM Asset Tag: NO DIMM Part Number: NO DIMM Handle 0x002C, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: 0x0035 Total Width: 64 bits Data Width: 64 bits Size: 16384 MB Form Factor: DIMM Set: None Locator: DIMM_B4 Bank Locator: CPU2 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: 1333 MHz (0.8 ns) Manufacturer: CE00B304CE00 Serial Number: 36119AD8 Asset Tag: 02171321 Part Number: M393B2G70BH0-YH9 Handle 0x002D, DMI type 17, 34 bytes Memory Device Array Handle: 0x001D Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: DIMM_B8 Bank Locator: CPU2 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: Unknown Manufacturer: NO DIMM Serial Number: NO DIMM Asset Tag: NO DIMM Part Number: NO DIMM Handle 0x002E, DMI type 18, 23 bytes 32-bit Memory Error Information Type: OK Granularity: Unknown Operation: Unknown Vendor Syndrome: Unknown Memory Array Address: Unknown Device Address: Unknown Resolution: Unknown Handle 0x002F, DMI type 18, 23 bytes 32-bit Memory Error Information

# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit CPU(s): 16 Thread(s) per core: 1 Core(s) per socket: 8 CPU socket(s): 2 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 45 Stepping: 7 CPU MHz: 0.000 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 20480K

slm · Answer

/sys/devices/system/cpu/の下を見ると何か見えますか？

$ Sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq 2667000

また、これを試すことができます。「cpufrequtils」パッケージをインストールします。次を使用してガバナーと頻度を変更できます。

$ cpufreq-set

現在のガバナーと頻度は、次のコマンドを使用して見つけることができます。

$ cpufreq-info

参考文献

[解決済み]/proc/cpuinfoプロセッサ速度の誤報