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我在Linux（基于CentOS 或者 Debian 的发行版）中该如何查看当前网络端口吞吐量的统计信息？在Linux操作系统中如何查看当前内核snmp计数器以及网络端口的统计信息？你可以使用以下任何一个命令： 

nstat 命令 : 网络统计工具

键入以下命令:
  1. # nstat
输出样例:
  1. #kernel
  2. IpInReceives1332430.0
  3. IpInDelivers1332430.0
  4. IpOutRequests929040.0
  5. IcmpOutErrors970.0
  6. IcmpOutTimeExcds970.0
  7. IcmpMsgOutType3970.0
  8. TcpActiveOpens5380.0
  9. TcpEstabResets560.0
  10. TcpInSegs1298370.0
  11. TcpOutSegs897200.0
  12. TcpRetransSegs420.0
  13. TcpOutRsts7040.0
  14. UdpInDatagrams32550.0
  15. UdpNoPorts970.0
  16. UdpOutDatagrams32700.0
  17. Ip6OutNoRoutes2060.0
  18. TcpExtTW1410.0
  19. TcpExtDelayedACKs5080.0
  20. TcpExtDelayedACKLocked10.0
  21. TcpExtDelayedACKLost420.0
  22. TcpExtTCPHPHits1176590.0
  23. TcpExtTCPPureAcks21580.0
  24. TcpExtTCPHPAcks6050.0
  25. TcpExtTCPSackRecovery10.0
  26. TcpExtTCPLossUndo160.0
  27. TcpExtTCPSackFailures40.0
  28. TcpExtTCPFastRetrans10.0
  29. TcpExtTCPSlowStartRetrans30.0
  30. TcpExtTCPTimeouts330.0
  31. TcpExtTCPDSACKOldSent400.0
  32. TcpExtTCPDSACKRecv50.0
  33. TcpExtTCPAbortOnData1200.0
  34. TcpExtTCPAbortOnClose550.0
  35. TcpExtTCPSackShiftFallback90.0
  36. IpExtInOctets1801316820.0
  37. IpExtOutOctets72891060.0
 

ss 命令 : 查询套接字工具

要查看统计汇总, 输入:
  1. # ss -s
输出样例:
  1. Total:786（kernel 804）
  2. TCP:65（estab 40, closed 7, orphaned 0, synrecv 0, timewait 6/0）, ports 56
  3. TransportTotal IP IPv6
  4. *804--
  5. RAW 110
  6. UDP 1293
  7. TCP 58526
  8. INET 71629
  9. FRAG 000
查看ss 命令教程 获取更多信息。 

netstat 命令 : 不错的显示套接字信息的旧工具

查看所有网络端口以及汇总信息表，输入：
  1. # netstat -i
输出样例:
  1. KernelInterface table
  2. Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
  3. eth0 15000941022000688165000 BMRU
  4. lo 16436093040009304000 LRU
  5. ppp0 1496037840004177000 MOPRU
查看每个协议的汇总统计信息，输入：
  1. # netstat -s
输出样例:
  1. Ip:
  2. 1092065 total packets received
  3. 0 forwarded
  4. 0 incoming packets discarded
  5. 1091681 incoming packets delivered
  6. 798913 requests sent out
  7. 895 dropped because of missing route
  8. 759 reassemblies required
  9. 375 packets reassembled ok
  10. Icmp:
  11. 17 ICMP messages received
  12. 0 input ICMP message failed.
  13. ICMP input histogram:
  14. timeout in transit:8
  15. echo replies:9
  16. 1747 ICMP messages sent
  17. 0 ICMP messages failed
  18. ICMP output histogram:
  19. destination unreachable:1730
  20. echo request:17
  21. IcmpMsg:
  22. InType0:9
  23. InType11:8
  24. OutType3:1730
  25. OutType8:17
  26. Tcp:
  27. 4822 active connections openings
  28. 1129 passive connection openings
  29. 457 failed connection attempts
  30. 165 connection resets received
  31. 7 connections established
  32. 1062519 segments received
  33. 771394 segments send out
  34. 7158 segments retransmited
  35. 6 bad segments received.
  36. 2578 resets sent
  37. Udp:
  38. 20846 packets received
  39. 1730 packets to unknown port received.
  40. 0 packet receive errors
  41. 19242 packets sent
  42. UdpLite:
  43. TcpExt:
  44. 71 invalid SYN cookies received
  45. 8 resets received for embryonic SYN_RECV sockets
  46. 142 packets pruned from receive queue because of socket buffer overrun
  47. 2109 TCP sockets finished time wait in fast timer
  48. 84 packets rejects in established connections because of timestamp
  49. 19454 delayed acks sent
  50. 6 delayed acks further delayed because of locked socket
  51. Quick ack mode was activated 7306 times
  52. 1 packets directly queued to recvmsg prequeue.
  53. 1 bytes directly received in process context from prequeue
  54. 823921 packet headers predicted
  55. 24412 acknowledgments not containing data payload received
  56. 10150 predicted acknowledgments
  57. 242 times recovered from packet loss by selective acknowledgements
  58. 33 congestion windows recovered without slow start by DSACK
  59. 335 congestion windows recovered without slow start after partial ack
  60. 336 TCP data loss events
  61. TCPLostRetransmit:35
  62. 1 timeouts after reno fast retransmit
  63. 156 timeouts after SACK recovery
  64. 116 timeouts in loss state
  65. 461 fast retransmits
  66. 5 forward retransmits
  67. 608 retransmits in slow start
  68. 2073 other TCP timeouts
  69. 62 SACK retransmits failed
  70. 43074 packets collapsed in receive queue due to low socket buffer
  71. 8499DSACKs sent for old packets
  72. 101DSACKs sent forout of order packets
  73. 308DSACKs received
  74. 9DSACKsforout of order packets received
  75. 427 connections reset due to unexpected data
  76. 122 connections reset due to early user close
  77. 28 connections aborted due to timeout
  78. TCPDSACKIgnoredOld:3
  79. TCPDSACKIgnoredNoUndo:60
  80. TCPSpuriousRTOs:4
  81. TCPSackShifted:282
  82. TCPSackMerged:740
  83. TCPSackShiftFallback:1017
  84. IpExt:
  85. InMcastPkts:47
  86. OutMcastPkts:51
  87. InBcastPkts:1
  88. InOctets:1341508973
  89. OutOctets:72525352
  90. InMcastOctets:8649
  91. OutMcastOctets:7519
  92. InBcastOctets:328
查看 netstat 命令教程 获取更多信息 http://www.linuxidc.com/Linux/2014-12/110150.htm。 

ip / ifconfig 命令 : 配置或者显示网络端口信息

键入以下命令:
  1. # ifconfig
或者
  1. # /sbin/ifconfig
或者
  1. # ifconfig eth0
  1. eth0 Link encap:EthernetHWaddr b8:ac:6f:65:31:e5
  2. inet addr:192.168.1.5Bcast:192.168.1.255Mask:255.255.255.0
  3. inet6 addr: fe80::baac:6fff:fe65:31e5/64Scope:Link
  4. UP BROADCAST RUNNING MULTICAST MTU:1500Metric:1
  5. RX packets:966334 errors:0 dropped:0 overruns:0 frame:0
  6. TX packets:703297 errors:0 dropped:0 overruns:0 carrier:0
  7. collisions:0 txqueuelen:1000
  8. RX bytes:1186255648（1.1GiB） TX bytes:73968238（70.5MiB）
  9. Interrupt:17
  10. lo Link encap:LocalLoopback
  11. inet addr:127.0.0.1Mask:255.0.0.0
  12. inet6 addr:::1/128Scope:Host
  13. UP LOOPBACK RUNNING MTU:16436Metric:1
  14. RX packets:9666 errors:0 dropped:0 overruns:0 frame:0
  15. TX packets:9666 errors:0 dropped:0 overruns:0 carrier:0
  16. collisions:0 txqueuelen:0
  17. RX bytes:1399578（1.3MiB） TX bytes:1399578（1.3MiB）
  18. ppp0 Link encap:Point-to-PointProtocol
  19. inet addr:10.1.11.70 P-t-P:10.0.31.18Mask:255.255.255.255
  20. UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1496Metric:1
  21. RX packets:3784 errors:0 dropped:0 overruns:0 frame:0
  22. TX packets:4177 errors:0 dropped:0 overruns:0 carrier:0
  23. collisions:0 txqueuelen:3
  24. RX bytes:2400265（2.2MiB） TX bytes:275983（269.5KiB）
显示网络端口统计信息，输入：
  1. # ip -s link
输出样例:
  1. 1: lo: mtu 16436 qdisc noqueue state UNKNOWN
  2. link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  3. RX: bytes packets errors dropped overrun mcast
  4. 144418799600000
  5. TX: bytes packets errors dropped carrier collsns
  6. 144418799600000
  7. 2: eth0: mtu 1500 qdisc mq state UP qlen 1000
  8. link/ether b8:ac:6f:65:31:e5 brd ff:ff:ff:ff:ff:ff
  9. RX: bytes packets errors dropped overrun mcast
  10. 122195648399150100024
  11. TX: bytes packets errors dropped carrier collsns
  12. 756239377202720000
  13. 3: wlan0: mtu 1500 qdisc noop state DOWN qlen 1000
  14. link/ether 00:21:6a:ca:9b:10 brd ff:ff:ff:ff:ff:ff
  15. RX: bytes packets errors dropped overrun mcast
  16. 000000
  17. TX: bytes packets errors dropped carrier collsns
  18. 000000
  19. 4: pan0: mtu 1500 qdisc noop state DOWN
  20. link/ether 4a:c7:5f:0e:8e:d8 brd ff:ff:ff:ff:ff:ff
  21. RX: bytes packets errors dropped overrun mcast
  22. 000000
  23. TX: bytes packets errors dropped carrier collsns
  24. 000000
  25. 8: ppp0: mtu 1496 qdisc pfifo_fast state UNKNOWN qlen 3
  26. link/ppp
  27. RX: bytes packets errors dropped overrun mcast
  28. 241988138480000
  29. TX: bytes packets errors dropped carrier collsns
  30. 28415142870000
 

sar 命令: 显示网络统计信息

输入以下命令 （你需要 通过sysstat包安装并启用sar）:
  1. sar -n DEV
  1. Linux2.6.32-220.2.1.el6.x86_64 （www.cyberciti.biz）Tuesday13March2012 _x86_64_ （2 CPU）
  2. 12:00:01 CDT IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
  3. 12:10:01 CDT lo 0.000.000.000.000.000.000.00
  4. 12:10:01 CDT eth0 127.13121.3295.4518.340.000.000.00
  5. 12:10:01 CDT eth1 98.48110.6216.7296.330.000.000.00
  6. 12:20:01 CDT lo 0.000.000.000.000.000.000.00
  7. 12:20:01 CDT eth0 139.95133.41106.3019.950.000.000.00
  8. 12:20:01 CDT eth1 110.65121.8518.14107.130.000.000.00
  9. 12:30:01 CDT lo 0.000.000.000.000.000.000.00
  10. 12:30:01 CDT eth0 147.85132.49115.7820.450.000.000.00
  11. 12:30:01 CDT eth1 111.88127.3918.61117.650.000.000.00
  12. 12:40:01 CDT lo 0.000.000.000.000.000.000.00
  13. 12:40:01 CDT eth0 136.75124.64105.2419.480.000.000.00
  14. 12:40:01 CDT eth1 101.65115.3217.58104.500.000.000.00
  15. 12:50:01 CDT lo 0.000.000.000.000.000.000.00
  16. 12:50:01 CDT eth0 131.45125.6996.4919.580.000.000.00
  17. 12:50:01 CDT eth1 101.41111.3117.5496.780.000.000.00
  18. 01:00:01 CDT lo 0.000.000.000.000.000.000.00
  19. 01:00:01 CDT eth0 140.30133.27102.1720.750.000.000.00
  20. 01:00:01 CDT eth1 106.90119.5118.53103.090.000.000.00
  21. 01:10:01 CDT lo 0.000.000.000.000.000.000.00
  22. 01:10:01 CDT eth0 152.03127.74125.5619.850.000.000.00
  23. 01:10:01 CDT eth1 115.60134.5718.73126.960.000.000.00
  24. 01:20:01 CDT lo 0.000.000.000.000.000.000.00
  25. 01:20:01 CDT eth0 138.55130.55103.0320.200.000.000.00
  26. ....
  27. ..
  28. ....
  29. ..
  30. .
  31. 01:00:01 CDT eth1 156.82169.4828.83138.490.000.000.00
  32. 01:10:01 CDT lo 0.000.000.000.000.000.000.00
  33. 01:10:01 CDT eth0 215.19194.82163.1130.990.000.000.00
  34. 01:10:01 CDT eth1 162.49183.7928.36163.700.000.000.00
  35. 01:20:01 CDT lo 0.000.000.000.000.000.000.00
  36. 01:20:01 CDT eth0 200.20192.23140.6430.930.000.000.00
  37. 01:20:01 CDT eth1 153.60166.9627.32140.260.000.000.00
  38. 01:30:01 CDT lo 0.000.000.000.000.000.000.00
  39. 01:30:01 CDT eth0 111.98103.5879.1216.520.000.000.48
  40. 01:30:01 CDT eth1 87.5095.5814.7479.350.000.000.00
  41. Average: IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
  42. Average: lo 0.000.000.000.000.000.000.00
  43. Average: eth0 211.21196.20156.1831.200.000.000.01
  44. Average: eth1 159.10174.5228.00149.950.000.000.00
或者输入以下命令:
  1. # sar -n DEV 1 3
输出样例:
  1. Linux2.6.32-220.2.1.el6.x86_64 （www.cyberciti.biz）Tuesday13March2012 _x86_64_ （2 CPU）
  2. 01:44:03 CDT IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
  3. 01:44:04 CDT lo 0.000.000.000.000.000.000.00
  4. 01:44:04 CDT eth0 161.70154.26105.2026.630.000.000.00
  5. 01:44:04 CDT eth1 145.74142.5525.11144.940.000.000.00
  6. 01:44:04 CDT IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
  7. 01:44:05 CDT lo 0.000.000.000.000.000.000.00
  8. 01:44:05 CDT eth0 162.14156.31107.4642.180.000.000.00
  9. 01:44:05 CDT eth1 135.92138.8339.38104.920.000.000.00
  10. 01:44:05 CDT IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
  11. 01:44:06 CDT lo 0.000.000.000.000.000.000.00
  12. 01:44:06 CDT eth0 303.92293.14272.9137.400.000.000.00
  13. 01:44:06 CDT eth1 252.94290.2034.87263.500.000.000.00
  14. Average: IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
  15. Average: lo 0.000.000.000.000.000.000.00
  16. Average: eth0 210.37202.34163.1935.660.000.000.00
  17. Average: eth1 178.93191.6433.36171.600.000.000.00
via: http://www.cyberciti.biz/faq/network-statistics-tools-rhel-centos-debian-linux/作者：nixCraft 译者：ictlyh 校对：wxy本文由 LCTT 原创翻译，Linux中国 荣誉推出本文永久更新链接地址
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