CPU
1. lscpu:显示cpu架构信息
[xxx@localhost ~]$ lscpu
Architecture: x86_64
CPU op-mode(s): -bit, -bit
Byte Order: Little Endian
CPU(s): 4 #总处理器核心数量
On-line CPU(s) list: -
Thread(s) per core: 1 #每个核心支持的线程数量。1表示只支持一个线程,即不支持超线程
Core(s) per socket: 1 #每个处理器的核心数量
Socket(s): 4 #处理器数量
NUMA node(s):
Vendor ID: GenuineIntel
CPU family:
Model:
Stepping:
CPU MHz: 2599.998
BogoMIPS: 5199.99
Hypervisor vendor: VMware #管理程序供应商
Virtualization type: full
L1d cache: 32K
L1i cache: 32K
L2 cache: 256K
L3 cache: 30720K
NUMA node0 CPU(s): -
总处理器核心数量=处理器数量*每个处理器的核心数量*每个核心支持的线程数量。即:CPU(s) = Socket(s) * Core(s) * Thread(s)。
我们看一下MAN中是如何描述的:
[xxx@localhost ~]$ man lscpu
COLUMNS
CPU The logical CPU number of a CPU as used by the Linux kernel. #逻辑CPU数量
CORE The logical core number. A core can contain several CPUs. #逻辑核心数量
SOCKET The logical socket number. A socket can contain several cores. #逻辑插槽(路)数量
2. cat /proc/cpuinfo:查看CPU详细信息
[xxx@localhost ~]$ cat /proc/cpuinfo
processor :
vendor_id : GenuineIntel
cpu family :
model :
model name : Intel(R) Xeon(R) CPU E5- v3 @ .60GHz
stepping :
cpu MHz : 2599.998
cache size : KB
fpu : yes
fpu_exception : yes
cpuid level :
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 5199.99
clflush size :
cache_alignment :
address sizes : bits physical, bits virtual
power management: processor :
vendor_id : GenuineIntel
cpu family :
model :
model name : Intel(R) Xeon(R) CPU E5- v3 @ .60GHz
stepping :
cpu MHz : 2599.998
cache size : KB
fpu : yes
fpu_exception : yes
cpuid level :
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 5199.99
clflush size :
cache_alignment :
address sizes : bits physical, bits virtual
power management: processor :
vendor_id : GenuineIntel
cpu family :
model :
model name : Intel(R) Xeon(R) CPU E5- v3 @ .60GHz
stepping :
cpu MHz : 2599.998
cache size : KB
fpu : yes
fpu_exception : yes
cpuid level :
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 5199.99
clflush size :
cache_alignment :
address sizes : bits physical, bits virtual
power management: processor :
vendor_id : GenuineIntel
cpu family :
model :
model name : Intel(R) Xeon(R) CPU E5- v3 @ .60GHz
stepping :
cpu MHz : 2599.998
cache size : KB
fpu : yes
fpu_exception : yes
cpuid level :
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx hypervisor lahf_lm ida arat epb pln pts dts
bogomips : 5199.99
clflush size :
cache_alignment :
address sizes : bits physical, bits virtual
power management:
这样输出的话,内容有些多,看起来会有些混乱。我们可以用几条命令来查看我们想要知道的信息:
# 查看物理CPU个数
cat /proc/cpuinfo | grep "physical id" | sort | uniq # 查看每个物理CPU中core的个数(即核数)
cat /proc/cpuinfo | grep "cpu cores" | uniq # 查看每个物理CPU中线程的个数
cat /proc/cpuinfo | grep "siblings" | uniq # 查看逻辑CPU的个数
cat /proc/cpuinfo| grep "processor" # 查看CPU型号
cat /proc/cpuinfo | grep "model name" | uniq
内存
查看/proc/meminfo或者使用free命令。free命令就是从meminfo中获取的信息。一般情况下,使用free就能得到我们想知道的信息:
[xxx@localhost ~]$ free -m
total used free shared buffers cached
Mem:
-/+ buffers/cache:
Swap:
可以看出,内存大小是8G。
硬盘
1. lsblk:blk是block的缩写。列出块设备
[xxx@localhost ~]$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sr0 : 1024M rom
sdb : 100G disk
└─sdb1 : 100G part /data
sda : 60G disk
├─sda1 : 500M part /boot
└─sda2 : .5G part
├─VolGroup-lv_root (dm-) : 50G lvm /
├─VolGroup-lv_swap (dm-) : 4G lvm [SWAP]
└─VolGroup-lv_home (dm-) : .6G lvm /home
其中,TYPE=disk表示硬盘。可以看出,硬盘分为sda和sdb,一共160G。
2. df:查看硬盘使用情况
[xxx@localhost ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root 50G .7G 46G % /
tmpfs .9G .9G % /dev/shm
/dev/sda1 485M 39M 421M % /boot
/dev/mapper/VolGroup-lv_home .5G 165M .1G % /home
/dev/sdb1 99G 188M 94G % /data
所有行的Size全加起来,也能大概算出硬盘大小。
参考:
1. 百度百科双CPU中对超线程、双核心、双CPU的介绍:双CPU
2. ****博客:Linux下查看CPU信息[/proc/cpuinfo]
3. ****博客:处理器CPU概念及CPU多线程
4.博客园博客:Linux 查看系统硬件信息(实例详解)