12. 查看系统硬件配置

1、内存：内存的信息 主要在 /proc/meminfo 文件中 (free 命令可以查看内存的基本信息)

# 所有可用 RAM 的大小

MemTotal: 1907580 kB

# LowFree 和 HighFree 的总和

MemFree: 234816 kB

# 缓存大小

Buffers: 54020 kB

# 被高速缓存器使用的内存的大小

Cached: 1116392 kB

# 被高速缓存器使用的交换空间的大小

SwapCached: 8 kB

# 在活跃使用中的缓冲或高速缓冲存储器页面文件的大小

Active: 811652 kB

# 在不经常使用中的缓冲或高速缓冲存储器页面文件的大小

Inactive: 648288 kB

Active(anon): 161188 kB

Inactive(anon): 132688 kB

Active(file): 650464 kB

Inactive(file): 515600 kB

Unevictable: 0 kB

Mlocked: 0 kB

SwapTotal: 4194296 kB

# 交换空间的总大小

SwapFree: 4194288 kB

# 未被使用交换空间的大小

Dirty: 0 kB

# 被写回到磁盘的内存大小

Writeback: 0 kB

# 未映射页的内存大小

AnonPages: 289568 kB

# 设备和文件等映射的大小

Mapped: 78980 kB

Shmem: 4348 kB

Slab: 145712 kB

SReclaimable: 81736 kB

SUnreclaim: 63976 kB

KernelStack: 2072 kB

PageTables: 30376 kB

NFS_Unstable: 0 kB

Bounce: 0 kB

WritebackTmp: 0 kB

CommitLimit: 5148084 kB

Committed_AS: 923588 kB

VmallocTotal: 34359738367 kB

VmallocUsed: 157936 kB

VmallocChunk: 34359567308 kB

HardwareCorrupted: 0 kB

AnonHugePages: 147456 kB

HugePages_Total: 0

HugePages_Free: 0

HugePages_Rsvd: 0

HugePages_Surp: 0

Hugepagesize: 2048 kB

DirectMap4k: 6144 kB

DirectMap2M: 2091008 kB

DirectMap1G: 0 kB

2、CPU：CPU 的信息 主要在 /proc/cpuinfo 文件中

# vim /proc/cpuinfo

# 编号

processor : 0

# 制造商

vendor_id : GenuineIntel

# 产品系列代号

cpu family : 6

# 系列中的某一代产品

model : 60

# CPU 的名字、编号和主频

model name : Intel(R) Core(TM) i3-4170 CPU @ 3.70GHz

# CPU 属于制作更新版本

stepping : 3

# 实际使用主频

cpu MHz : 3698.989

# 二级缓存大小

cache size : 3072 KB

# 是否具有浮点运算单元

fpu : yes

# 是否支持浮点计算异常

fpu_exception : yes

# 执行 cpuid 指令之前，eax 寄存器中的值

cpuid level : 13

# 是否支持对用户空间的写保护

wp : yes

# 当前 CPU 支持的功能

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 pdpe1gb rdtscp lm constant_tsc up arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock

pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor

lahf_lm abm arat xsaveopt pln pts dts fsgsbase bmi1 avx2 smep bmi2 invpcid

# 系统内核启动时， CPU 的执行速度

bogomips : 7397.97

# 每次刷新缓存的大小单元

clflush size : 64

# 缓存地址对齐单位

cache_alignment : 64

# 可访问地址空间总数

address sizes : 42 bits physical, 48 bits virtual

# 对电源管理的支持

power management:

3、磁盘

# 使用 fdisk -l 查看

[root@Demon proc]# fdisk -l

Disk /dev/sda: 107.4 GB, 107374182400 bytes

255 heads, 63 sectors/track, 13054 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000d62df

Device Boot Start End Blocks Id System

/dev/sda1 * 1 52 409600 83 Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2 52 574 4194304 82 Linux swap / Solaris

Partition 2 does not end on cylinder boundary.

/dev/sda3 574 13055 100252672 83 Linux

4、网卡

# 使用 dmesg 查看

[root@Demon proc]# dmesg | grep eth0

e1000 0000:02:01.0: eth0: (PCI:66MHz:32-bit) 00:0c:29:fa:56:4d

e1000 0000:02:01.0: eth0: Intel(R) PRO/1000 Network Connection

ADDRCONF(NETDEV_UP): eth0: link is not ready

e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None

ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

8021q: adding VLAN 0 to HW filter on device eth0

eth0: no IPv6 routers present

e1000: eth0 NIC Link is Down

e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None

e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None

ADDRCONF(NETDEV_UP): eth0: link is not ready

8021q: adding VLAN 0 to HW filter on device eth0

ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

eth0: no IPv6 routers present

ADDRCONF(NETDEV_UP): eth0: link is not ready

8021q: adding VLAN 0 to HW filter on device eth0

e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None

ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

eth0: no IPv6 routers present

ADDRCONF(NETDEV_UP): eth0: link is not ready

8021q: adding VLAN 0 to HW filter on device eth0

e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None

ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

eth0: no IPv6 routers present

ADDRCONF(NETDEV_UP): eth0: link is not ready

8021q: adding VLAN 0 to HW filter on device eth0

e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: None

ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready

eth0: no IPv6 routers present