linux 系统信息查看命令
常用的linux系统信息查看：
A. cat /proc/cpuinfo | grep "physical id" # 查询物理cpu个数
[root@mynet ~]# cat /proc/cpuinfo | grep "physical id" //查询结果显示有1个物理CPU physical id : 0 physical id : 0 physical id : 0 physical id : 0
B. cat /proc/cpuinfo | grep processor #查询CPU的核数
[root@mynet ~]# cat /proc/cpuinfo | grep processor //查询结果显示有4核 processor : 0 processor : 1 processor : 2 processor : 3
综上所述，该服务器有1颗4核的CPU
C. ethtool -p DEVNAME 查看相应设备名称对应的设备位置
[root@MyOpenStack ~]# ethtool -p enp217s0f1 //回车后与eth0 相对应的网卡接口旁边的指示灯就会闪烁，可以确定enp217s0f1 网口的位置。（按下Ctrl+C 结束命令，停止闪烁）
1. lsb_release -a # 查看linux是什么版本的信息，使用于所有版本的Linux
[root@xzythpt04 ~]# lsb_release -a LSB Version: :base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch Distributor ID: RedHatEnterpriseServer Description: Red Hat Enterprise Linux Server release 6.7 (Santiago) Release: 6.7 Codename: Santiago
2. uname –a # 查看内核/操作系统/CPU信息的linux系统信息命令
[root@mynet ~]# uname -a Linux mynet 3.10.0-1062.18.1.el7.x86_64 #1 SMP Tue Mar 17 23:49:17 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
3. head -n 1 /etc/issue # 查看操作系统版本
[root@xzythpt04 ~]# head -n 1 /etc/issue Red Hat Enterprise Linux Server release 6.7 (Santiago)
4. cat /proc/cpuinfo # 查看CPU信息的linux系统信息命令
[root@mynet ~]# cat /proc/cpuinfo processor : 0 //系统中逻辑处理核的编号 vendor_id : AuthenticAMD //CPU制造商 cpu family : 23 //CPU产品系列代号 model : 49 //CPU属于其系列中的哪一代的代号 model name : AMD EPYC 7K62 48-Core Processor //CPU属于的名字及其编号、标称主频 stepping : 0 //CPU属于制作更新版本 microcode : 0x1000065 // cpu MHz : 2595.124 //CPU的实际使用主频 cache size : 512 KB //CPU二级缓存大小 physical id : 0 //单个CPU的标号 siblings : 4 //单个CPU逻辑物理核数 core id : 0 //当前物理核在其所处CPU中的编号，这个编号不一定连续 cpu cores : 4 //该逻辑核所处CPU的物理核数 apicid : 0 //用来区分不同逻辑核的编号，系统中每个逻辑核的此编号必然不同，此编号不一定连续 initial apicid : 0 // fpu : yes //是否具有浮点运算单元（Floating Point Unit） fpu_exception : yes //是否支持浮点计算异常 cpuid level : 13 //执行cpuid指令前，eax寄存器中的值，根据不同的值cpuid指令会返回不同的内容 wp : yes //表明当前CPU是否在内核态支持对用户空间的写保护（Write Protection） flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall
nx mmxext fxsr_opt pdpe1gb rdtscp lm art rep_good nopl extd_apicid eagerfpu pni pclmulqdq ssse3 fma cx16
sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm cmp_legacy cr8_legacy abm
sse4a misalignsse 3dnowprefetch osvw topoext retpoline_amd ibpb vmmcall fsgsbase bmi1 avx2 smep bmi2 rdseed
adx smap clflushopt sha_ni xsaveopt xsavec xgetbv1 arat
//当前CPU支持的功能
bogomips : 5190.24 //在系统内核启动时粗略测算的CPU速度（Million Instructions Per Second） TLB size : 1024 4K pages // clflush size : 64 //每次刷新缓存的大小单位 cache_alignment : 64 //缓存地址对齐单位 address sizes : 48 bits physical, 48 bits virtual //可访问地址空间位数 power management: //对能源管理的支持 ......
5. hostname # 查看计算机名
[root@mynet ~]# hostname mynet
6. lspci -tv # 列出所有PCI设备
[root@mynet ~]# lspci -tv
-[0000:00]-+-00.0 Intel Corporation 440FX - 82441FX PMC [Natoma]
+-01.0 Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
+-01.1 Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
+-01.2 Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II]
+-01.3 Intel Corporation 82371AB/EB/MB PIIX4 ACPI
+-02.0 Cirrus Logic GD 5446
+-03.0-[01]--
+-04.0-[02]--
+-05.0 Red Hat, Inc. Virtio network device
+-06.0 Red Hat, Inc. Virtio block device
\-07.0 Red Hat, Inc. Virtio memory balloon
7. lsusb -tv # 列出所有USB设备
[root@xzythpt04 ~]# lsusb -tv
Bus# 2
`-Dev# 1 Vendor 0x1d6b Product 0x0002
`-Dev# 2 Vendor 0x8087 Product 0x0024
`-Dev# 9 Vendor 0x0624 Product 0x0248
`-Dev# 10 Vendor 0x04b3 Product 0x4010
Bus# 1
`-Dev# 1 Vendor 0x1d6b Product 0x0002
`-Dev# 2 Vendor 0x8087 Product 0x0024
8. lsmod # 列出加载的内核模块
[root@mynet ~]# lsusb -tv -bash: lsusb: command not found [root@mynet ~]# lsmod Module Size Used by binfmt_misc 17468 1 nfnetlink 14519 0 rdma_ucm 26931 0 ib_ucm 22566 0 rdma_cm 64252 1 rdma_ucm iw_cm 43918 1 rdma_cm ib_ipoib 176977 0 ib_cm 53015 3 rdma_cm,ib_ucm,ib_ipoib ib_umad 27587 0 mlx5_fpga_tools 14392 0 mlx5_ib 398012 0 ib_uverbs 134486 3 mlx5_ib,ib_ucm,rdma_ucm mlx5_core 1182018 2 mlx5_ib,mlx5_fpga_tools vfio_mdev 12841 0 vfio_iommu_type1 22440 0 vfio 32657 2 vfio_mdev,vfio_iommu_type1 mdev 20672 2 vfio_mdev,mlx5_core mlxfw 18227 1 mlx5_core mlx4_ib 220791 0 ib_core 379728 10 rdma_cm,ib_cm,iw_cm,mlx4_ib,mlx5_ib,ib_ucm,ib_umad,ib_uverbs,rdma_ucm,ib_ipoib mlx4_en 142468 0 ptp 19231 2 mlx4_en,mlx5_core pps_core 19057 1 ptp mlx4_core 361489 2 mlx4_en,mlx4_ib mlx_compat 47141 17 mdev,rdma_cm,vfio_mdev,ib_cm,iw_cm,mlx4_en,mlx4_ib,mlx5_ib,mlx5_fpga_tools,ib_ucm,ib_core,ib_umad,ib_uverbs,mlx4_core,mlx5_core,rdma_ucm,ib_ipoib devlink 60067 4 mlx4_en,mlx4_ib,mlx4_core,mlx5_core crc32_pclmul 13133 0 ghash_clmulni_intel 13273 0 aesni_intel 189456 0 lrw 13286 1 aesni_intel gf128mul 15139 1 lrw ppdev 17671 0 glue_helper 13990 1 aesni_intel parport_pc 28205 0 parport 46395 2 ppdev,parport_pc ablk_helper 13597 1 aesni_intel cryptd 21190 3 ghash_clmulni_intel,aesni_intel,ablk_helper sg 40719 0 virtio_balloon 18015 0 i2c_piix4 22401 0 joydev 17389 0 pcspkr 12718 0 ip_tables 27126 0 ext4 584153 1 mbcache 14958 1 ext4 jbd2 107478 1 ext4 sr_mod 22416 0 cdrom 42556 1 sr_mod ata_generic 12923 0 pata_acpi 13053 0 virtio_net 28063 0 virtio_blk 18323 2 cirrus 24171 1 drm_kms_helper 186531 1 cirrus syscopyarea 12529 1 drm_kms_helper sysfillrect 12701 1 drm_kms_helper sysimgblt 12640 1 drm_kms_helper fb_sys_fops 12703 1 drm_kms_helper ata_piix 35052 0 ttm 96673 1 cirrus crct10dif_pclmul 14307 0 crct10dif_common 12595 1 crct10dif_pclmul crc32c_intel 22094 0 drm 456166 4 ttm,drm_kms_helper,cirrus libata 243133 3 pata_acpi,ata_generic,ata_piix serio_raw 13434 0 virtio_pci 22985 0 virtio_ring 22746 4 virtio_blk,virtio_net,virtio_pci,virtio_balloon virtio 14959 4 virtio_blk,virtio_net,virtio_pci,virtio_balloon floppy 69432 0 drm_panel_orientation_quirks 17180 1 drm scsi_transport_iscsi 99909 1
9. env # 查看环境变量资源
[root@mynet ~]# env
XDG_SESSION_ID=105594
HOSTNAME=mynet
TERM=xterm
SHELL=/bin/bash
HISTSIZE=3000
SSH_CLIENT=101.249.33.103 7204 22
SSH_TTY=/dev/pts/1
USER=root
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=01;05;37;41:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=01;36:*.au=01;36:*.flac=01;36:*.mid=01;36:*.midi=01;36:*.mka=01;36:*.mp3=01;36:*.mpc=01;36:*.ogg=01;36:*.ra=01;36:*.wav=01;36:*.axa=01;36:*.oga=01;36:*.spx=01;36:*.xspf=01;36:
MAIL=/var/spool/mail/root
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin
PWD=/root
LANG=en_US.utf8
SHLVL=1
HOME=/root
LOGNAME=root
SSH_CONNECTION=101.249.33.103 7204 172.21.0.17 22
LESSOPEN=||/usr/bin/lesspipe.sh %s
PROMPT_COMMAND=history -a; history -a; printf "\033]0;%s@%s:%s\007" "${USER}" "${HOSTNAME%%.*}" "${PWD/#$HOME/~}"
XDG_RUNTIME_DIR=/run/user/0
HISTTIMEFORMAT=%F %T
_=/usr/bin/env
10. free -m # 查看内存使用量和交换区使用量
[root@mynet ~]# free -m
total used free shared buff/cache available
Mem: 7820 227 1119 0 6474 7290
Swap: 0 0 0
11. df -h # 查看各分区使用情况
[root@mynet ~]# df -h Filesystem Size Used Avail Use% Mounted on devtmpfs 3.9G 0 3.9G 0% /dev tmpfs 3.9G 24K 3.9G 1% /dev/shm tmpfs 3.9G 516K 3.9G 1% /run tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup /dev/vda1 50G 7.5G 40G 16% / tmpfs 783M 0 783M 0% /run/user/0
12. du -sh # 查看指定目录的大小
[root@MyOpenStack ~]# du -sh /home 3.8M /home
13. grep MemTotal /proc/meminfo # 查看内存总量
[root@mynet /]# grep MemTotal /proc/meminfo MemTotal: 8008696 kB
14. grep MemFree /proc/meminfo # 查看空闲内存量
[root@mynet /]# grep MemFree /proc/meminfo MemFree: 1095404 kB
15. uptime # 查看系统运行时间、用户数、负载
[root@mynet /]# uptime 22:07:07 up 72 days, 1:37, 1 user, load average: 0.00, 0.01, 0.05
16. cat /proc/loadavg # 查看系统负载磁盘和分区
[root@mynet /]# cat /proc/loadavg 0.00 0.01 0.05 2/162 29085
17. mount | column -t # 查看挂接的分区状态
[root@mynet /]# mount | column -t sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime) proc on /proc type proc (rw,nosuid,nodev,noexec,relatime) devtmpfs on /dev type devtmpfs (rw,nosuid,size=3993436k,nr_inodes=998359,mode=755) securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime) tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev) devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000) tmpfs on /run type tmpfs (rw,nosuid,nodev,mode=755) tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755) cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd) pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime) cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset) cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_prio,net_cls) cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices) cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event) cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory) cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpuacct,cpu) cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer) cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids) cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb) cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio) configfs on /sys/kernel/config type configfs (rw,relatime) /dev/vda1 on / type ext4 (rw,relatime,data=ordered) systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=26,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=8775) debugfs on /sys/kernel/debug type debugfs (rw,relatime) hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime) mqueue on /dev/mqueue type mqueue (rw,relatime) tmpfs on /run/user/0 type tmpfs (rw,nosuid,nodev,relatime,size=800872k,mode=700) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
18. fdisk -l # 查看所有分区
[root@mynet /]# fdisk -l Disk /dev/vda: 53.7 GB, 53687091200 bytes, 104857600 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk label type: dos Disk identifier: 0x0009ac89 Device Boot Start End Blocks Id System /dev/vda1 * 2048 104857566 52427759+ 83 Linux
19. swapon -s # 查看所有交换分区
[root@xzythpt04 home]# swapon -s Filename Type Size Used Priority /dev/dm-1 partition 65535996 0 -1 You have mail in /var/spool/mail/root
20. hdparm -i /dev/hda # 查看磁盘参数（仅适用于IDE设备）,目前很少用到
21. dmesg | grep IDE # 查看启动时IDE设备检测状况网络，目前很少用到
22. ifconfig # 查看所有网络接口的属性
[root@mynet /]# ifconfig
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.21.0.17 netmask 255.255.240.0 broadcast 172.21.15.255
inet6 fe80::5054:ff:fe46:cf55 prefixlen 64 scopeid 0x20<link>
ether 52:54:00:46:cf:55 txqueuelen 1000 (Ethernet)
RX packets 41356689 bytes 5195180417 (4.8 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 41553188 bytes 7570211028 (7.0 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 39421 bytes 1932499 (1.8 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 39421 bytes 1932499 (1.8 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
23. iptables -L # 查看防火墙设置（以下是防火墙关闭后的结果）
[root@mynet /]# iptables -L Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination
24. route -n # 查看路由表
[root@mynet /]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 172.21.0.1 0.0.0.0 UG 0 0 0 eth0 169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0 172.21.0.0 0.0.0.0 255.255.240.0 U 0 0 0 eth0
25. netstat -antp # 查看所有已经建立的连接
[root@mynet /]# netstat -antp Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1235/sshd tcp 0 0 0.0.0.0:5466 0.0.0.0:* LISTEN 23565/./wftpserver tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 23565/./wftpserver tcp 0 0 0.0.0.0:21 0.0.0.0:* LISTEN 23565/./wftpserver tcp 0 0 172.21.0.17:54454 69.16.175.42:80 ESTABLISHED 23565/./wftpserver tcp 0 96 172.21.0.17:22 101.249.33.103:7204 ESTABLISHED 26205/sshd: root@pt tcp 0 0 172.21.0.17:45130 169.254.0.55:5574 ESTABLISHED 6578/YDService tcp 0 21 172.21.0.17:22 2.144.242.210:50688 ESTABLISHED 29950/sshd: [accept tcp6 0 0 :::5466 :::* LISTEN 23565/./wftpserver tcp6 0 0 :::80 :::* LISTEN 23565/./wftpserver tcp6 0 0 :::21 :::* LISTEN 23565/./wftpserver
26. netstat -s # 查看网络统计信息进程
[root@mynet /]# netstat -s
Ip:
40084947 total packets received
0 forwarded
217 with unknown protocol
0 incoming packets discarded
40084154 incoming packets delivered
40920331 requests sent out
56 dropped because of missing route
1106 reassemblies required
553 packets reassembled ok
Icmp:
4481985 ICMP messages received
2426 input ICMP message failed.
ICMP input histogram:
destination unreachable: 3425
timeout in transit: 153
redirects: 10
echo requests: 4478166
echo replies: 15
timestamp request: 216
4519488 ICMP messages sent
0 ICMP messages failed
ICMP output histogram:
destination unreachable: 41106
echo replies: 4478166
timestamp replies: 216
IcmpMsg:
InType0: 15
InType3: 3425
InType5: 10
InType8: 4478166
InType11: 153
InType13: 216
OutType0: 4478166
OutType3: 41106
OutType14: 216
Tcp:
2958142 active connections openings
790642 passive connection openings
12837 failed connection attempts
17375 connection resets received
3 connections established
34577817 segments received
35190093 segments send out
401853 segments retransmited
675 bad segments received.
2904483 resets sent
InCsumErrors: 645
Udp:
887718 packets received
48772 packets to unknown port received.
162 packet receive errors
898442 packets sent
0 receive buffer errors
0 send buffer errors
InCsumErrors: 161
UdpLite:
TcpExt:
4536 invalid SYN cookies received
12837 resets received for embryonic SYN_RECV sockets
9 ICMP packets dropped because they were out-of-window
120229 TCP sockets finished time wait in fast timer
227 packets rejects in established connections because of timestamp
2109901 delayed acks sent
74 delayed acks further delayed because of locked socket
Quick ack mode was activated 14939 times
270 SYNs to LISTEN sockets dropped
812199 packets directly queued to recvmsg prequeue.
1815730 bytes directly in process context from backlog
133565611 bytes directly received in process context from prequeue
5771100 packet headers predicted
143578 packets header predicted and directly queued to user
11198910 acknowledgments not containing data payload received
3664466 predicted acknowledgments
6 times recovered from packet loss due to fast retransmit
536 times recovered from packet loss by selective acknowledgements
Detected reordering 1 times using reno fast retransmit
Detected reordering 3 times using time stamp
10 congestion windows fully recovered without slow start
4 congestion windows partially recovered using Hoe heuristic
282 congestion windows recovered without slow start by DSACK
24746 congestion windows recovered without slow start after partial ack
1 timeouts after reno fast retransmit
726 timeouts after SACK recovery
85 timeouts in loss state
518 fast retransmits
41 forward retransmits
46 retransmits in slow start
131174 other TCP timeouts
TCPLossProbes: 243209
TCPLossProbeRecovery: 154954
114 SACK retransmits failed
16722 DSACKs sent for old packets
509 DSACKs sent for out of order packets
151835 DSACKs received
13 DSACKs for out of order packets received
9595 connections reset due to unexpected data
385 connections reset due to early user close
2197 connections aborted due to timeout
TCPDSACKIgnoredOld: 11
TCPDSACKIgnoredNoUndo: 114862
TCPSpuriousRTOs: 78
TCPSackShiftFallback: 11123
TCPRcvCoalesce: 3411137
TCPOFOQueue: 180371
TCPOFOMerge: 625
TCPChallengeACK: 219
TCPSYNChallenge: 37
TCPFastOpenCookieReqd: 3
TCPAutoCorking: 10
TCPSynRetrans: 101034
TCPOrigDataSent: 16204576
TCPACKSkippedSynRecv: 12
TCPACKSkippedPAWS: 6
TCPACKSkippedSeq: 65
TCPACKSkippedTimeWait: 1
TCPACKSkippedChallenge: 1
IpExt:
InNoRoutes: 23
InMcastPkts: 87700
InOctets: 4572956953
OutOctets: 6970883417
InMcastOctets: 3157200
InNoECTPkts: 40698163
InECT1Pkts: 14
InECT0Pkts: 18616
InCEPkts: 7031
27. ps -ef # 查看所有进程
[root@mynet /]# ps -ef UID PID PPID C STIME TTY TIME CMD root 1 0 0 Oct10 ? 00:23:31 /usr/lib/systemd/systemd --switched-root --system --deserialize 22 root 2 0 0 Oct10 ? 00:00:02 [kthreadd] root 4 2 0 Oct10 ? 00:00:00 [kworker/0:0H] root 6 2 0 Oct10 ? 00:00:18 [ksoftirqd/0] root 7 2 0 Oct10 ? 00:01:01 [migration/0] root 8 2 0 Oct10 ? 00:00:00 [rcu_bh] root 9 2 0 Oct10 ? 00:14:01 [rcu_sched] root 10 2 0 Oct10 ? 00:00:00 [lru-add-drain] root 11 2 0 Oct10 ? 00:00:12 [watchdog/0] root 12 2 0 Oct10 ? 00:00:11 [watchdog/1] root 13 2 0 Oct10 ? 00:01:01 [migration/1] root 14 2 0 Oct10 ? 00:00:14 [ksoftirqd/1] root 16 2 0 Oct10 ? 00:00:00 [kworker/1:0H] root 17 2 0 Oct10 ? 00:00:10 [watchdog/2] root 18 2 0 Oct10 ? 00:01:01 [migration/2] root 19 2 0 Oct10 ? 00:00:07 [ksoftirqd/2] root 21 2 0 Oct10 ? 00:00:00 [kworker/2:0H] root 22 2 0 Oct10 ? 00:00:10 [watchdog/3] root 23 2 0 Oct10 ? 00:01:01 [migration/3] root 24 2 0 Oct10 ? 00:00:07 [ksoftirqd/3] root 26 2 0 Oct10 ? 00:00:00 [kworker/3:0H] root 28 2 0 Oct10 ? 00:00:00 [kdevtmpfs] root 29 2 0 Oct10 ? 00:00:00 [netns] root 30 2 0 Oct10 ? 00:00:01 [khungtaskd] root 31 2 0 Oct10 ? 00:00:00 [writeback] root 32 2 0 Oct10 ? 00:00:00 [kintegrityd] root 33 2 0 Oct10 ? 00:00:00 [bioset] root 34 2 0 Oct10 ? 00:00:00 [bioset] root 35 2 0 Oct10 ? 00:00:00 [bioset] root 36 2 0 Oct10 ? 00:00:00 [kblockd] root 37 2 0 Oct10 ? 00:00:00 [md] root 38 2 0 Oct10 ? 00:00:00 [edac-poller] root 39 2 0 Oct10 ? 00:00:00 [watchdogd] root 45 2 0 Oct10 ? 00:00:00 [kswapd0] root 46 2 0 Oct10 ? 00:00:00 [ksmd] root 47 2 0 Oct10 ? 00:00:10 [khugepaged] root 48 2 0 Oct10 ? 00:00:00 [crypto] root 56 2 0 Oct10 ? 00:00:00 [kthrotld] root 58 2 0 Oct10 ? 00:00:00 [kmpath_rdacd] root 59 2 0 Oct10 ? 00:00:00 [kaluad] root 62 2 0 Oct10 ? 00:00:00 [kpsmoused] root 63 2 0 Oct10 ? 00:00:00 [ipv6_addrconf] root 77 2 0 Oct10 ? 00:00:00 [deferwq] root 151 2 0 Oct10 ? 00:09:19 [kauditd] root 217 2 0 Oct10 ? 00:00:00 [iscsi_eh] root 266 2 0 Oct10 ? 00:00:00 [ata_sff] root 279 2 0 Oct10 ? 00:00:00 [ttm_swap] root 287 2 0 Oct10 ? 00:00:00 [scsi_eh_0] root 288 2 0 Oct10 ? 00:00:00 [scsi_tmf_0] root 289 2 0 Oct10 ? 00:00:00 [scsi_eh_1] root 290 2 0 Oct10 ? 00:00:00 [scsi_tmf_1] root 293 2 0 Oct10 ? 00:03:32 [kworker/0:1H] root 310 2 0 Oct10 ? 00:03:31 [jbd2/vda1-8] root 311 2 0 Oct10 ? 00:00:00 [ext4-rsv-conver] root 317 2 0 Oct10 ? 00:00:16 [kworker/1:1H] root 378 2 0 Oct10 ? 00:00:02 [kworker/2:1H] root 382 2 0 Oct10 ? 00:00:01 [kworker/3:1H] root 403 1 0 Oct10 ? 00:20:30 /usr/lib/systemd/systemd-journald root 433 1 0 Oct10 ? 00:00:00 /usr/sbin/lvmetad -f root 438 1 0 Oct10 ? 00:00:00 /usr/lib/systemd/systemd-udevd root 646 1 0 Oct10 ? 00:08:28 /sbin/auditd polkitd 669 1 0 Oct10 ? 00:02:34 /usr/lib/polkit-1/polkitd --no-debug root 676 1 0 Oct10 ? 00:02:53 /usr/lib/systemd/systemd-logind dbus 678 1 0 Oct10 ? 00:07:09 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile ntp 680 1 0 Oct10 ? 00:00:09 /usr/sbin/ntpd -u ntp:ntp -g libstor+ 683 1 0 Oct10 ? 00:00:09 /usr/bin/lsmd -d root 695 1 0 Oct10 ? 00:00:00 /usr/sbin/acpid root 767 2 0 Oct10 ? 00:00:00 [mlx4] root 773 2 0 Oct10 ? 00:00:00 [ib-comp-wq] root 774 2 0 Oct10 ? 00:00:00 [kworker/u9:0] root 775 2 0 Oct10 ? 00:00:00 [ib-comp-unb-wq] root 776 2 0 Oct10 ? 00:00:00 [ib_mcast] root 777 2 0 Oct10 ? 00:00:00 [ib_nl_sa_wq] root 778 2 0 Oct10 ? 00:00:00 [mlx4_ib] root 779 2 0 Oct10 ? 00:00:00 [mlx4_ib_mcg] root 812 2 0 Oct10 ? 00:00:00 [mlx5_ib_sigerr_] root 856 2 0 Oct10 ? 00:00:00 [rdma_cm] root 1056 1 0 Oct10 ? 00:00:00 /sbin/dhclient -q -lf /var/lib/dhclient/dhclient--eth0.lease -pf /var/ root 1122 1 0 Oct10 ? 00:05:45 /usr/bin/python2 -Es /usr/sbin/tuned -l -P root 1133 1 0 Oct10 ? 00:01:08 /usr/sbin/iscsid root 1134 1 0 Oct10 ? 00:00:00 /usr/sbin/iscsid root 1235 1 0 Oct10 ? 00:05:32 /usr/sbin/sshd -D root 1236 1 0 Oct10 ? 00:17:31 /usr/sbin/rsyslogd -n root 1250 1 0 Oct10 ? 00:00:26 /usr/sbin/crond -n root 1258 1 0 Oct10 ? 00:00:00 /usr/sbin/atd -f root 1480 1 0 Oct10 ttyS0 00:00:00 /sbin/agetty --keep-baud 115200,38400,9600 ttyS0 vt220 root 1481 1 0 Oct10 tty1 00:00:00 /sbin/agetty --noclear tty1 linux root 1671 1 0 Oct10 ? 00:00:40 /usr/local/qcloud/stargate/sgagent -d root 4287 2 0 20:01 ? 00:00:00 [kworker/3:1] root 6578 1 0 Nov29 ? 00:48:51 /usr/local/qcloud/YunJing/YDEyes/YDService root 6618 1 0 Nov29 ? 00:03:05 /usr/local/qcloud/YunJing/YDLive/YDLive root 7116 1 0 Nov29 ? 00:35:33 /usr/local/qcloud/YunJing/YDEdr root 7394 2 0 Dec16 ? 00:00:09 [kworker/2:1] root 11126 2 0 Dec17 ? 00:00:06 [kworker/3:0] root 14785 2 0 Dec20 ? 00:00:02 [kworker/0:0] root 23565 1 0 Oct17 ? 01:55:33 ./wftpserver root 24108 2 0 Dec20 ? 00:00:16 [kworker/1:2] root 24865 1 0 Nov16 ? 00:00:25 barad_agent root 24866 24865 0 Nov16 ? 00:25:15 barad_agent root 24867 24865 0 Nov16 ? 02:47:47 barad_agent root 25535 2 0 Dec07 ? 00:00:08 [kworker/u8:2] root 26121 2 0 Dec15 ? 00:00:13 [kworker/u8:1] root 26205 1235 0 21:53 ? 00:00:00 sshd: root@pts/1 root 26213 26205 0 21:53 pts/1 00:00:00 -bash root 27780 2 0 22:01 ? 00:00:00 [kworker/2:2] root 27782 2 0 22:01 ? 00:00:00 [kworker/0:2] root 28119 2 0 22:02 ? 00:00:00 [kworker/1:0] root 29132 2 0 22:07 ? 00:00:00 [kworker/1:1] root 29380 2 0 22:09 ? 00:00:00 [kworker/2:0] root 30102 1235 0 22:12 ? 00:00:00 sshd: unknown [priv] sshd 30103 30102 0 22:12 ? 00:00:00 sshd: unknown [net] root 30117 26213 0 22:12 pts/1 00:00:00 ps -ef
28. top # 实时显示进程状态用户
[root@xzythpt04 home]# top
top - 10:28:31 up 96 days, 17:05, 1 user, load average: 0.05, 0.01, 0.00
Tasks: 1657 total, 1 running, 1656 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 132132780k total, 3073052k used, 129059728k free, 190072k buffers
Swap: 65535996k total, 0k used, 65535996k free, 478196k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
31789 root 20 0 16232 2508 924 R 1.3 0.0 0:00.20 top
4195 zabbix 20 0 26424 5320 5112 S 0.3 0.0 106:00.20 zabbix_agentd
1 root 20 0 23596 1640 1304 S 0.0 0.0 0:05.17 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.03 kthreadd
3 root RT 0 0 0 0 S 0.0 0.0 0:00.09 migration/0
4 root 20 0 0 0 0 S 0.0 0.0 0:00.38 ksoftirqd/0
5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/0
6 root RT 0 0 0 0 S 0.0 0.0 0:08.56 watchdog/0
7 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/1
8 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/1
9 root 20 0 0 0 0 S 0.0 0.0 0:00.76 ksoftirqd/1
10 root RT 0 0 0 0 S 0.0 0.0 0:08.15 watchdog/1
11 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/2
12 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/2
13 root 20 0 0 0 0 S 0.0 0.0 0:00.25 ksoftirqd/2
14 root RT 0 0 0 0 S 0.0 0.0 0:07.73 watchdog/2
15 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/3
16 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/3
17 root 20 0 0 0 0 S 0.0 0.0 0:00.20 ksoftirqd/3
18 root RT 0 0 0 0 S 0.0 0.0 0:07.80 watchdog/3
19 root RT 0 0 0 0 S 0.0 0.0 0:00.01 migration/4
20 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/4
21 root 20 0 0 0 0 S 0.0 0.0 0:00.33 ksoftirqd/4
22 root RT 0 0 0 0 S 0.0 0.0 0:07.68 watchdog/4
23 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/5
24 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/5
25 root 20 0 0 0 0 S 0.0 0.0 0:00.87 ksoftirqd/5
26 root RT 0 0 0 0 S 0.0 0.0 0:07.49 watchdog/5
27 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/6
28 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/6
29 root 20 0 0 0 0 S 0.0 0.0 0:00.60 ksoftirqd/6
30 root RT 0 0 0 0 S 0.0 0.0 0:07.27 watchdog/6
31 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/7
32 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/7
33 root 20 0 0 0 0 S 0.0 0.0 0:01.83 ksoftirqd/7
34 root RT 0 0 0 0 S 0.0 0.0 0:07.31 watchdog/7
35 root RT 0 0 0 0 S 0.0 0.0 0:00.16 migration/8
36 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/8
37 root 20 0 0 0 0 S 0.0 0.0 0:02.54 ksoftirqd/8
38 root RT 0 0 0 0 S 0.0 0.0 0:07.53 watchdog/8
39 root RT 0 0 0 0 S 0.0 0.0 0:00.01 migration/9
40 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/9
41 root 20 0 0 0 0 S 0.0 0.0 0:01.11 ksoftirqd/9
42 root RT 0 0 0 0 S 0.0 0.0 0:07.62 watchdog/9
43 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/10
44 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/10
45 root 20 0 0 0 0 S 0.0 0.0 0:01.34 ksoftirqd/10
46 root RT 0 0 0 0 S 0.0 0.0 0:07.69 watchdog/10
47 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/11
48 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/11
49 root 20 0 0 0 0 S 0.0 0.0 0:02.29 ksoftirqd/11
50 root RT 0 0 0 0 S 0.0 0.0 0:07.36 watchdog/11
51 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/12
52 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/12
53 root 20 0 0 0 0 S 0.0 0.0 0:03.65 ksoftirqd/12
54 root RT 0 0 0 0 S 0.0 0.0 0:07.34 watchdog/12
55 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/13
56 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/13
57 root 20 0 0 0 0 S 0.0 0.0 0:00.89 ksoftirqd/13
58 root RT 0 0 0 0 S 0.0 0.0 0:07.33 watchdog/13
59 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/14
60 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/14
29. w # 查看活动用户
[root@mynet /]# w 22:14:00 up 72 days, 1:44, 1 user, load average: 0.00, 0.01, 0.05 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT root pts/1 101.249.33.103 21:53 0.00s 0.06s 0.00s w
30. id # 查看指定用户信息
[root@mynet /]# id uid=0(root) gid=0(root) groups=0(root)
31. last # 查看用户登录日志
[root@mynet /]# last root pts/1 101.249.33.103 Mon Dec 21 21:53 still logged in root pts/2 220.182.44.50 Fri Nov 27 15:28 - 15:48 (00:20) root pts/1 220.182.44.50 Fri Nov 27 14:27 - 17:17 (02:49) root pts/1 219.151.40.88 Wed Nov 18 14:31 - 14:36 (00:04) root pts/1 219.151.40.88 Wed Nov 18 12:16 - 14:22 (02:05) root pts/2 219.151.40.88 Wed Nov 18 10:24 - 12:39 (02:15) root pts/1 219.151.40.88 Wed Nov 18 09:57 - 11:58 (02:00) root pts/1 220.182.44.50 Fri Nov 13 18:07 - 18:14 (00:06) root pts/3 219.151.40.88 Thu Nov 12 17:21 - 19:21 (02:00) root pts/1 219.151.40.88 Thu Nov 12 17:20 - 19:48 (02:28) root pts/2 219.151.40.88 Thu Nov 12 15:55 - 18:12 (02:16) root pts/1 219.151.40.88 Thu Nov 12 15:00 - 17:06 (02:06) root pts/1 219.151.40.88 Thu Nov 12 11:25 - 14:02 (02:37) root pts/1 219.151.40.88 Wed Nov 11 15:29 - 17:30 (02:00) root pts/2 101.249.34.214 Mon Nov 9 21:51 - 00:02 (02:11) root pts/1 101.249.34.214 Mon Nov 9 21:29 - 23:43 (02:13) root pts/1 101.249.33.134 Thu Oct 29 23:28 - 01:42 (02:14) root pts/2 220.182.44.50 Sat Oct 17 11:44 - 13:48 (02:04) root pts/0 220.182.44.50 Sat Oct 17 11:00 - 13:22 (02:21) root pts/1 220.182.44.50 Sat Oct 17 10:10 - 12:25 (02:15) root pts/0 14.29.234.162 Sat Oct 17 10:08 - 10:18 (00:10) root pts/0 101.248.132.97 Sun Oct 11 17:47 - 19:59 (02:12) root pts/2 220.182.44.50 Sun Oct 11 13:28 - 15:29 (02:00) root pts/0 220.182.44.50 Sun Oct 11 13:09 - 15:09 (02:00) root pts/1 220.182.44.50 Sun Oct 11 11:37 - 13:58 (02:21) root pts/0 220.182.44.50 Sun Oct 11 10:49 - 12:49 (02:00) root pts/2 101.249.37.203 Sat Oct 10 23:59 - 02:10 (02:11) root pts/1 101.249.37.203 Sat Oct 10 23:45 - 02:03 (02:18) root pts/0 101.249.37.203 Sat Oct 10 23:13 - 01:49 (02:36) reboot system boot 3.10.0-1062.18.1 Sat Oct 10 20:29 - 22:14 (72+01:45) root pts/0 101.249.37.203 Sat Oct 10 19:51 - down (00:38) reboot system boot 3.10.0-1062.18.1 Mon Sep 28 10:33 - 20:29 (12+09:55) root pts/0 101.249.42.208 Fri Aug 21 17:26 - 17:28 (00:02) root pts/0 101.249.42.208 Fri Aug 21 17:12 - 17:13 (00:00) wtmp begins Fri Aug 21 17:12:55 2020
32. cut -d: -f1 /etc/passwd # 查看系统所有用户
[root@mynet /]# cut -d: -f1 /etc/passwd root bin daemon adm lp sync shutdown halt mail operator games ftp nobody systemd-network dbus polkitd libstoragemgmt rpc ntp abrt sshd postfix chrony tcpdump syslog ftptest grassrouter apache
33. cut -d: -f1 /etc/group # 查看系统所有组
[root@mynet /]# cut -d: -f1 /etc/group root bin daemon sys adm tty disk lp mem kmem wheel cdrom mail man dialout floppy games tape video ftp lock audio nobody users utmp utempter input systemd-journal systemd-network dbus polkitd libstoragemgmt ssh_keys rpc ntp abrt sshd slocate postdrop postfix chrony tcpdump stapusr stapsys stapdev syslog ftpgroup ftptest grassrouter apache
34. crontab -l # 查看当前用户的计划任务服务
[root@mynet /]# crontab -l */1 * * * * flock -xn /tmp/stargate.lock -c '/usr/local/qcloud/stargate/admin/start.sh > /dev/null 2>&1 &' 0 0 * * * /usr/local/qcloud/YunJing/YDCrontab.sh > /dev/null 2>&1 &
35. chkconfig –list # 列出所有系统服务
36. chkconfig –list | grep on # 列出所有启动的系统服务程序
37. rpm -qa # 查看所有安装的软件包
[root@mynet /]# rpm -qa |haed -20 -bash: haed: command not found [root@mynet /]# rpm -qa |head -n 20 sqlite-3.7.17-8.el7_7.1.x86_64 ustr-1.0.4-16.el7.x86_64 libdaemon-0.14-7.el7.x86_64 kbd-misc-1.15.5-15.el7.noarch NetworkManager-tui-1.18.0-5.el7_7.2.x86_64 lz4-1.7.5-3.el7.x86_64 ncurses-5.9-14.20130511.el7_4.x86_64 python-requests-2.6.0-9.el7_7.noarch sssd-client-1.16.4-21.el7_7.3.x86_64 hostname-3.13-3.el7_7.1.x86_64 satyr-0.13-15.el7.x86_64 info-5.1-5.el7.x86_64 sudo-1.8.23-4.el7_7.2.x86_64 passwd-0.79-5.el7.x86_64 ......
38. cat /proc/meminfo # 查看linux系统内存信息的linux系统命令
[root@mynet /]# cat /proc/meminfo MemTotal: 8008696 kB MemFree: 1085896 kB MemAvailable: 7460752 kB Buffers: 197088 kB Cached: 6074440 kB SwapCached: 0 kB Active: 4774392 kB Inactive: 1610684 kB Active(anon): 118096 kB Inactive(anon): 36 kB Active(file): 4656296 kB Inactive(file): 1610648 kB Unevictable: 5428 kB Mlocked: 5428 kB SwapTotal: 0 kB SwapFree: 0 kB Dirty: 284 kB Writeback: 80 kB AnonPages: 119056 kB Mapped: 54088 kB Shmem: 564 kB Slab: 434132 kB SReclaimable: 413880 kB SUnreclaim: 20252 kB KernelStack: 2688 kB PageTables: 5752 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 4004348 kB Committed_AS: 619548 kB VmallocTotal: 34359738367 kB VmallocUsed: 20020 kB VmallocChunk: 34359712252 kB HardwareCorrupted: 0 kB AnonHugePages: 24576 kB CmaTotal: 0 kB CmaFree: 0 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 2048 kB DirectMap4k: 87920 kB DirectMap2M: 4106240 kB DirectMap1G: 6291456 kB
39. cat /proc/version # 查看版本，类似uname -r
[root@mynet /]# cat /proc/version Linux version 3.10.0-1062.18.1.el7.x86_64 (mockbuild@kbuilder.bsys.centos.org) (gcc version 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC) ) #1 SMP Tue Mar 17 23:49:17 UTC 2020
40. cat /proc/ioports # 查看设备io端口
[root@mynet /]# cat /proc/ioports
0000-0cf7 : PCI Bus 0000:00
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-0060 : keyboard
0064-0064 : keyboard
0070-0071 : rtc0
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : 0000:00:01.1
0170-0177 : ata_piix
01f0-01f7 : 0000:00:01.1
01f0-01f7 : ata_piix
0376-0376 : 0000:00:01.1
0376-0376 : ata_piix
03c0-03df : vga+
03f2-03f2 : floppy
03f4-03f5 : floppy
03f6-03f6 : 0000:00:01.1
03f6-03f6 : ata_piix
03f7-03f7 : floppy
03f8-03ff : serial
0600-063f : 0000:00:01.3
0600-0603 : ACPI PM1a_EVT_BLK
0604-0605 : ACPI PM1a_CNT_BLK
0608-060b : ACPI PM_TMR
0700-070f : 0000:00:01.3
0700-0708 : piix4_smbus
0cf8-0cff : PCI conf1
0d00-ffff : PCI Bus 0000:00
afe0-afe3 : ACPI GPE0_BLK
c000-cfff : PCI Bus 0000:02
d000-dfff : PCI Bus 0000:01
e000-e03f : 0000:00:05.0
e040-e07f : 0000:00:06.0
e080-e09f : 0000:00:01.2
e080-e09f : uhci_hcd
e0a0-e0bf : 0000:00:07.0
e0c0-e0cf : 0000:00:01.1
e0c0-e0cf : ata_piix
41. cat /proc/interrupts # 查看中断
[root@mynet /]# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 200 0 0 0 IO-APIC-edge timer
1: 10 0 0 0 IO-APIC-edge i8042
4: 432 0 0 0 IO-APIC-edge serial
6: 3 0 0 0 IO-APIC-edge floppy
8: 0 0 0 0 IO-APIC-edge rtc0
9: 0 0 0 0 IO-APIC-fasteoi acpi
11: 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb1, virtio2
12: 15 0 0 0 IO-APIC-edge i8042
14: 6081613 0 0 0 IO-APIC-edge ata_piix
15: 0 0 0 0 IO-APIC-edge ata_piix
24: 0 0 0 0 PCI-MSI-edge virtio1-config
25: 23624576 0 0 0 PCI-MSI-edge virtio1-req.0
26: 0 0 0 0 PCI-MSI-edge virtio0-config
27: 17023230 0 0 0 PCI-MSI-edge virtio0-input.0
28: 1 0 0 0 PCI-MSI-edge virtio0-output.0
29: 9 20658820 0 0 PCI-MSI-edge virtio0-input.1
30: 1 0 0 0 PCI-MSI-edge virtio0-output.1
NMI: 0 0 0 0 Non-maskable interrupts
LOC: 473194642 458715043 460967476 460243665 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 0 0 0 0 Performance monitoring interrupts
IWI: 11958040 11723176 11963169 12053587 IRQ work interrupts
RTR: 0 0 0 0 APIC ICR read retries
RES: 120499723 123169292 121766877 121748999 Rescheduling interrupts
CAL: 8269871 4066391 8839293 8449908 Function call interrupts
TLB: 10114303 10165304 10252995 10351461 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
DFR: 0 0 0 0 Deferred Error APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 20759 20759 20759 20759 Machine check polls
ERR: 0
MIS: 0
PIN: 0 0 0 0 Posted-interrupt notification event
NPI: 0 0 0 0 Nested posted-interrupt event
PIW: 0 0 0 0 Posted-interrupt wakeup event
42. cat /proc/pci # 查看pci设备的信息
43. cat /proc/swaps # 查看所有swap分区的信息
[root@xzythpt04 home]# cat /proc/swaps Filename Type Size Used Priority /dev/dm-1 partition 65535996 0 -1
