1、查询cpu的相关
a、查询CPU的统计信息
使用命令：lscpu
得到的结果如下：
Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 12 On-line CPU(s) list: 0-11 Thread(s) per core: 1 Core(s) per socket: 6 Socket(s): 2 NUMA node(s): 2 Vendor ID: GenuineIntel CPU family: 6 Model: 62 Stepping: 4 CPU MHz: 2099.939 BogoMIPS: 4199.44 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 15360K NUMA node0 CPU(s): 0-5 NUMA node1 CPU(s): 6-11
b、查询每个CPU信息
使用的命令：cat /proc/cpuinfo
得到如下结果：
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 62 model name : Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz stepping : 4 cpu MHz : 2099.939 cache size : 15360 KB physical id : 0 siblings : 6 core id : 0 cpu cores : 6 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 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 arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms bogomips : 4199.87 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 62 model name : Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz stepping : 4 cpu MHz : 2099.939 cache size : 15360 KB physical id : 0 siblings : 6 core id : 1 cpu cores : 6 apicid : 2 initial apicid : 2 fpu : yes fpu_exception : yes cpuid level : 13 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 arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms bogomips : 4199.87 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management: processor : 2 vendor_id : GenuineIntel cpu family : 6 model : 62 model name : Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz stepping : 4 cpu MHz : 2099.939 cache size : 15360 KB physical id : 0 siblings : 6 core id : 2 cpu cores : 6 apicid : 4 initial apicid : 4 fpu : yes fpu_exception : yes cpuid level : 13 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 arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms bogomips : 4199.87 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management:
2、查询所有的pci设备信息（pci是一种总线，而通过pci总线连接的设备就是pci设备了，如今，我们常用的设备很多都采用pci总线了，如网卡存储等）
使用命令：lspci
得到结果：
0:00.0 Host bridge: Intel Corporation Xeon E5 v2/Core i7 DMI2 (rev 04) 00:01.0 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 1a (rev 04) 00:01.1 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 1b (rev 04) 00:02.0 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 2a (rev 04) 00:03.0 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 3a (rev 04) 00:03.2 PCI bridge: Intel Corporation Xeon E5 v2/Core i7 PCI Express Root Port 3c (rev 04) 00:04.0 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 0 (rev 04) 00:04.1 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 1 (rev 04) 00:04.2 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 2 (rev 04) 00:04.3 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 3 (rev 04) 00:04.4 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 4 (rev 04) 00:04.5 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 5 (rev 04) 00:04.6 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 6 (rev 04) 00:04.7 System peripheral: Intel Corporation Xeon E5 v2/Core i7 Crystal Beach DMA Channel 7 (rev 04) 00:05.0 System peripheral: Intel Corporation Xeon E5 v2/Core i7 VTd/Memory Map/Misc (rev 04) 00:05.2 System peripheral: Intel Corporation Xeon E5 v2/Core i7 IIO RAS (rev 04) 00:05.4 PIC: Intel Corporation Xeon E5 v2/Core i7 IOAPIC (rev 04) 00:11.0 PCI bridge: Intel Corporation C600/X79 series chipset PCI Express Virtual Root Port (rev 06) 00:16.0 Communication controller: Intel Corporation C600/X79 series chipset MEI Controller #1 (rev 05) 00:16.1 Communication controller: Intel Corporation C600/X79 series chipset MEI Controller #2 (rev 05) 00:1a.0 USB controller: Intel Corporation C600/X79 series chipset USB2 Enhanced Host Controller #2 (rev 06) 00:1d.0 USB controller: Intel Corporation C600/X79 series chipset USB2 Enhanced Host Controller #1 (rev 06) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev a6) 00:1f.0 ISA bridge: Intel Corporation C600/X79 series chipset LPC Controller (rev 06) 00:1f.2 SATA controller: Intel Corporation C600/X79 series chipset 6-Port SATA AHCI Controller (rev 06) 00:1f.3 SMBus: Intel Corporation C600/X79 series chipset SMBus Host Controller (rev 06) 00:1f.6 Signal processing controller: Intel Corporation C600/X79 series chipset Thermal Management Controller (rev 06) 02:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01) 02:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01) 06:00.0 Network controller: Mellanox Technologies MT27500 Family [ConnectX-3] 08:04.0 VGA compatible controller: Matrox Electronics Systems Ltd. MGA G200eW WPCM450 (rev 0a)
如果要利用lscpi查询网卡型号可以使用命令：lspci |grep Ethernet
得到结果：
02:00.0 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01) 02:00.1 Ethernet controller: Intel Corporation I350 Gigabit Network Connection (rev 01)
3、查询内存相关信息
a、查看内存大小
使用命令：free
得到内存的一个整体信息如下：
total used free shared buffers cached Mem: 16364948 1623020 14741928 0 549616 291172 -/+ buffers/cache: 782232 15582716 Swap: 16383992 81560 16302432
b、查看详细信息
使用命令：cat /proc/meminfo
结果：
MemTotal: 16364948 kB MemFree: 14742988 kB Buffers: 549660 kB Cached: 291340 kB SwapCached: 14724 kB Active: 241052 kB Inactive: 646568 kB Active(anon): 32216 kB Inactive(anon): 14800 kB Active(file): 208836 kB Inactive(file): 631768 kB Unevictable: 0 kB Mlocked: 0 kB SwapTotal: 16383992 kB SwapFree: 16302432 kB Dirty: 0 kB Writeback: 0 kB AnonPages: 38996 kB Mapped: 13080 kB Shmem: 388 kB Slab: 340196 kB SReclaimable: 210436 kB SUnreclaim: 129760 kB KernelStack: 4744 kB PageTables: 12496 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 24566464 kB Committed_AS: 553868 kB VmallocTotal: 34359738367 kB VmallocUsed: 429696 kB VmallocChunk: 34349265164 kB HardwareCorrupted: 0 kB AnonHugePages: 8192 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 4868 kB DirectMap2M: 2058240 kB DirectMap1G: 14680064 kB
4、查看系统内核相关信息
使用命令：uname -a
结果：
Linux cn13 2.6.32-431.el6.x86_64 #1 SMP Sun Nov 10 22:19:54 EST 2013 x86_64 x86_64 x86_64 GNU/Linux
查看系统版本
使用命令：cat /etc/issue
结果：
Red Hat Enterprise Linux Server release 6.5 (Santiago)
5、利用dmindecode查看硬件信息
查看服务器型号
dmidecode | grep 'product name'
查看主板序列号
dmidecode | grep 'Serial Number'
查看系统序列号
dmidecode -s systems-serial-number
查看内存信息
dmidecode -t memory
查看oem信息
dmidecode -t 11
**6、利用ibstat查看infiniband网卡的信息：
结果：
CA 'mlx4_0' CA type: MT4099 Number of ports: 1 Firmware version: 2.30.8000 Hardware version: 0 Node GUID: 0x002590fffff7761c System image GUID: 0x002590fffff7761f Port 1: State: Active Physical state: LinkUp Rate: 40 Base lid: 85 LMC: 0 SM lid: 229 Capability mask: 0x02514868 Port GUID: 0x002590fffff7761d Link layer: InfiniBand