Linux系列-lscpu指令帮助手册（Linux系列-lscpu指令帮助手册）

lscpu的基本使用root@hanyw-ubuntu:~# lsCPU --output-all Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 43 bits physical, 48 bits virtual Byte Order: Little Endian CPU(s): 1 On-line CPU(s) list: 0 Vendor ID: AuthenticAMD Model name: AMD Ryzen 5 4600H with Radeon Graphics CPU family: 23 Model: 96 Thread(s) per core: 1 Core(s) per Socket: 1 Socket(s): 1 Stepping: 1 bogoMIPS: 5988.75 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl tsc_reliable nonstop_tsc cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm extapic cr8_legacy abm sse4a misalignsse 3dnowprefet ch osvw ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt clwb sha_ni xsa veopt xsavec xsaves clzero arat overflow_recov succor Virtualization features: Hypervisor vendor: VMware Virtualization type: full Caches (sum of all): L1d: 32 KiB (1 instance) L1i: 32 KiB (1 instance) L2: 512 KiB (1 instance) L3: 8 MiB (1 instance) NUMA: NUMA node(s): 1 NUMA node0 CPU(s): 0 Vulnerabilities: Itlb multihit: Not affected L1tf: Not affected Mds: Not affected Meltdown: Not affected Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization Spectre v2: Mitigation; Retpolines, IBPB conditional, STIBP disabled, RSB filling Srbds: Not affected Tsx async abort: Not affected，接下来我们就来聊聊关于Linux系列-lscpu指令帮助手册?以下内容大家不妨参考一二希望能帮到您!

Linux系列-lscpu指令帮助手册

lscpu的基本使用

root@hanyw-ubuntu:~# lsCPU --output-all Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 43 bits physical, 48 bits virtual Byte Order: Little Endian CPU(s): 1 On-line CPU(s) list: 0 Vendor ID: AuthenticAMD Model name: AMD Ryzen 5 4600H with Radeon Graphics CPU family: 23 Model: 96 Thread(s) per core: 1 Core(s) per Socket: 1 Socket(s): 1 Stepping: 1 bogoMIPS: 5988.75 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl tsc_reliable nonstop_tsc cpuid extd_apicid tsc_known_freq pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm extapic cr8_legacy abm sse4a misalignsse 3dnowprefet ch osvw ssbd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed adx smap clflushopt clwb sha_ni xsa veopt xsavec xsaves clzero arat overflow_recov succor Virtualization features: Hypervisor vendor: VMware Virtualization type: full Caches (sum of all): L1d: 32 KiB (1 instance) L1i: 32 KiB (1 instance) L2: 512 KiB (1 instance) L3: 8 MiB (1 instance) NUMA: NUMA node(s): 1 NUMA node0 CPU(s): 0 Vulnerabilities: Itlb multihit: Not affected L1tf: Not affected Mds: Not affected Meltdown: Not affected Spec store bypass: Mitigation; Speculative Store Bypass disabled via prctl and seccomp Spectre v1: Mitigation; usercopy/swapgs barriers and __user pointer sanitization Spectre v2: Mitigation; Retpolines, IBPB conditional, STIBP disabled, RSB filling Srbds: Not affected Tsx async abort: Not affected

lscpu帮助手册如下。

LSCPU(1) User Commands LSCPU(1) NAME lscpu - display information about the CPU architecture SYNOPSIS lscpu [options] DESCRIPTION lscpu gathers CPU architecture information from sysfs, /proc/cpuinfo and any applicable architecture-specific libraries (e.g. librtas on Powerpc). The command output can be optimized for parsing or for easy readability by humans. The information includes, for example, the number of CPUs, threads, cores, sockets, and Non-Uniform Memory Access (NUMA) nodes. There is also information about the CPU caches and cache sharing, family, model, bogoMIPS, byte order, and stepping. The default output formatting on terminal is subject to change and maybe optimized for better readability. The output for non-terminals (e.g., pipes) is never affected by this optimization and it is always in "Field: data\n" format. Use for example "lscpu | less" to see the default output without optimizations. In virtualized environments, the CPU architecture information displayed reflects the configuration of the guest operating system which is typically different from the physical (host) system. On architectures that support retrieving physical topology information, lscpu also displays the number of physical sockets, chips, cores in the host system. Options that result in an output table have a list argument. Use this argument to customize the command output. Specify a comma-separated list of column labels to limit the output table to only the specified columns, arranged in the specified order. See COLUMNS for a list of valid column labels. The column labels are not case sensitive. Not all columns are supported on all architectures. If an unsupported column is specified, lscpu prints the column but does not provide any data for it. The cache sizes are reported as summary from all CPUs. The versions before v2.34 reported per-core sizes, but this output was confusing due to complicated CPUs topology and the way how caches are shared between CPUs. For more details about caches see --cache. Since version v2.37 lscpu follows cache IDs as provided by Linux kernel and it does not always start from zero. OPTIONS -a, --all Include lines for online and offline CPUs in the output (default for -e). This option may only be specified together with option -e or -p. -B, --bytes Print the sizes in bytes rather than in a human-readable format. -b, --online Limit the output to online CPUs (default for -p). This option may only be specified together with option -e or -p. -C, --caches[=list] Display details about CPU caches. For details about available information see --help output. If the list argument is omitted, all columns for which data is available are included in the command output. When specifying the list argument, the string of option, equal sign (=), and list must not contain any blanks or other whitespace. Examples: '-C=NAME,ONE-SIZE' or '--caches=NAME,ONE-SIZE'. The default list of columns may be extended if list is specified in the format list (e.g., lscpu -C= ALLOC-POLICY). -c, --offline Limit the output to offline CPUs. This option may only be specified together with option -e or -p. -e, --extended[=list] Display the CPU information in human-readable format. If the list argument is omitted, the default columns are included in the command output. The default output is subject to change. When specifying the list argument, the string of option, equal sign (=), and list must not contain any blanks or other whitespace. Examples: '-e=cpu,node' or '--extended=cpu,node'. The default list of columns may be extended if list is specified in the format list (e.g., lscpu -e= MHZ). -h, --help Display help text and exit. -J, --json Use JSON output format for the default summary or extended output (see --extended). -p, --parse[=list] Optimize the command output for easy parsing. If the list argument is omitted, the command output is compatible with earlier versions of lscpu. In this compatible format, two commas are used to separate CPU cache columns. If no CPU caches are identified the cache column is omitted. If the list argument is used, cache columns are separated with a colon (:). When specifying the list argument, the string of option, equal sign (=), and list must not contain any blanks or other whitespace. Examples: '-p=cpu,node' or '--parse=cpu,node'. The default list of columns may be extended if list is specified in the format list (e.g., lscpu -p= MHZ). -s, --sysroot directory Gather CPU data for a Linux instance other than the instance from which the lscpu command is issued. The specified directory is the system root of the Linux instance to be inspected. -x, --hex Use hexadecimal masks for CPU sets (for example "ff"). The default is to print the sets in list format (for example 0,1). Note that before version 2.30 the mask has been printed with 0x prefix. -y, --physical Display physical IDs for all columns with topology elements (core, socket, etc.). Other than logical IDs, which are assigned by lscpu, physical IDs are platform-specific values that are provided by the kernel. Physical IDs are not necessarily unique and they might not be arranged sequentially. If the kernel could not retrieve a physical ID for an element lscpu prints the dash (-) character. The CPU logical numbers are not affected by this option. -V, --version Display version information and exit. --output-all Output all available columns. This option must be combined with either --extended, --parse or --caches. BUGS The basic overview of CPU family, model, etc. is always based on the first CPU only. Sometimes in Xen Dom0 the kernel reports wrong data. On virtual hardware the number of cores per socket, etc. can be wrong. AUTHORS Cai Qian <qcai@redhat.com>, Karel Zak <kzak@redhat.com>, Heiko Carstens <heiko.carstens@de.ibm.com> SEE ALSO chcpu(8) REPORTING BUGS For bug reports, use the issue tracker at https://github.com/karelzak/util-linux/issues. AVAILABILITY The lscpu command is part of the util-linux package which can be downloaded from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-linux/>. util-linux 2.37.2 2021-06-02 LSCPU(1)