CPUInfo在Linux下怎么查

在Linux系統下，可以通過以下幾種方法查看CPU信息：

方法一：使用lscpu命令

lscpu命令可以顯示CPU架構的信息。

lscpu

輸出示例：

Architecture:          x86_64
CPU op-mode(s):        32-bit, 64-bit
Byte Order:            Little Endian
CPU(s):                4
On-line CPU(s) list:   0-3
Thread(s) per core:    1
Core(s) per socket:    4
Socket(s):             1
NUMA node(s):          1
Vendor ID:             GenuineIntel
CPU family:            6
Model:                 158
Stepping:              9
CPU MHz:               2300.000
BogoMIPS:              4600.00
Virtualization:        VT-x
L1d cache:             32K
L1i cache:             32K
L2 cache:              256K
L3 cache:              4096K
NUMA node0 CPU(s):     0-3

方法二：查看/proc/cpuinfo文件

/proc/cpuinfo文件包含了詳細的CPU信息。

cat /proc/cpuinfo

輸出示例：

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 158
model name	: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
stepping	: 9
cpu MHz		: 2800.000
cache size	: 6144 KB
physical id	: 0
siblings	: 8
core id		: 0
cpu cores	: 4
apicid		: 0
initial apicid	: 0
fpu		: yes
fpu_exception	: yes
cpuid level	: 22
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 art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc 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 3dnowprefetch 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 cqm rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp md_clear flush_l1d
bugs		: cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs itlb_multihit
bogomips	: 5600.00
clflush size	: 64
cache_alignment	: 64
address sizes	: 39 bits physical, 48 bits virtual
power management:

方法三：使用dmidecode命令

dmidecode命令可以顯示硬件系統的詳細信息，包括CPU。

首先需要安裝dmidecode（如果尚未安裝）：

sudo apt-get install dmidecode  # Debian/Ubuntu
sudo yum install dmidecode      # CentOS/RHEL

然后運行：

sudo dmidecode -t processor

輸出示例：

Handle 0x001C, DMI type 4, 42 bytes
Processor Information
    Socket Designation: CPU1
    Type: Central Processor
    Family: Core i7
    Manufacturer: Intel Corporation
    ID: AEBF0697 00000000 00000000 00000000
    Version: Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz
    Voltage: 1.2 V
    External Clock: 100 MHz
    Max Speed: 3800 MHz
    Current Speed: 2800 MHz
    Status: Populated, Enabled
    Upgrade: Other
    L1 Cache Handle: 0x001D
    L2 Cache Handle: 0x001E
    L3 Cache Handle: 0x001F
    Serial Number: To Be Filled By O.E.M.
    Asset Tag: 9876543210
    Part Number: N/A
    Core Count: 4
    Core Enabled: 4
    Thread Count: 8
    Characteristics:
        64-bit capable
        Hyper-Threading technology
        Virtualization technology

通過這些方法，你可以全面了解Linux系統下的CPU信息。