监视网络接口数据

监视网络接口TCP状态信息数据有多种工具或命令。下面举例一些：

nstat命令

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# nstat #kernel IpInReceives                      9733104              0.0 IpInDelivers                      9733102              0.0 IpOutRequests                    9058593              0.0 IcmpInErrors                      2147                0.0 IcmpInCsumErrors                  1143                0.0 IcmpInDestUnreachs                2                    0.0 IcmpInTimeExcds                  1361                0.0 IcmpInParmProbs                  56                  0.0 IcmpInRedirects                  1                    0.0 IcmpInEchoReps                    701                  0.0 IcmpInTimestamps                  26                  0.0 IcmpOutErrors                    750                  0.0 IcmpOutTimeExcds                  23                  0.0 IcmpOutEchoReps                  26                  0.0 IcmpOutTimestamps                701                  0.0 IcmpMsgInType0                    26                  0.0 IcmpMsgInType3                    1361                0.0 IcmpMsgInType4                    1                    0.0 IcmpMsgInType8                    701                  0.0 IcmpMsgInType11                  56                  0.0 IcmpMsgOutType0                  701                  0.0 IcmpMsgOutType3                  23                  0.0 IcmpMsgOutType8                  26                  0.0 TcpActiveOpens                    678940              0.0 TcpPassiveOpens                  910289              0.0 TcpAttemptFails                  58018                0.0 TcpEstabResets                    14608                0.0 TcpInSegs                        9686518              0.0 TcpOutSegs                        9038288              0.0 TcpRetransSegs                    6700                0.0 TcpInErrs                        47                  0.0 TcpOutRsts                        67249                0.0 UdpInDatagrams                    44409                0.0 UdpNoPorts                        23                  0.0 UdpOutDatagrams                  44441                0.0 Ip6InReceives                    6                    0.0 Ip6InNoRoutes                    6                    0.0 Ip6OutRequests                    9                    0.0 Ip6OutNoRoutes                    3948                0.0 Ip6OutMcastPkts                  14                  0.0 Ip6InOctets                      432                  0.0 Ip6OutOctets                      612                  0.0 Ip6OutMcastOctets                992                  0.0 Ip6InNoECTPkts                    6                    0.0 Icmp6OutMsgs                      9                    0.0 Icmp6OutRouterSolicits            3                    0.0 Icmp6OutNeighborSolicits          1                    0.0 Icmp6OutMLDv2Reports              5                    0.0 Icmp6OutType133                  3                    0.0 Icmp6OutType135                  1                    0.0 Icmp6OutType143                  5                    0.0 TcpExtSyncookiesFailed            140                  0.0 TcpExtEmbryonicRsts              704                  0.0 TcpExtPruneCalled                23                  0.0 TcpExtTW                          615681              0.0 TcpExtPAWSEstab                  20                  0.0 TcpExtDelayedACKs                52123                0.0 TcpExtDelayedACKLocked            44                  0.0 TcpExtDelayedACKLost              1518                0.0 TcpExtListenDrops                32                  0.0 TcpExtTCPPrequeued                19258                0.0 TcpExtTCPDirectCopyFromBacklog    45185                0.0 TcpExtTCPDirectCopyFromPrequeue 394312              0.0 TcpExtTCPHPHits                  943072              0.0 TcpExtTCPHPHitsToUser            3478                0.0 TcpExtTCPPureAcks                3242625              0.0 TcpExtTCPHPAcks                  547259              0.0 TcpExtTCPSackRecovery            650                  0.0 TcpExtTCPFACKReorder              1                    0.0 TcpExtTCPSACKReorder              8                    0.0 TcpExtTCPTSReorder                23                  0.0 TcpExtTCPFullUndo                1                    0.0 TcpExtTCPPartialUndo              23                  0.0 TcpExtTCPDSACKUndo                1                    0.0 TcpExtTCPLossUndo                854                  0.0 TcpExtTCPLostRetransmit          162                  0.0 TcpExtTCPSackFailures            135                  0.0 TcpExtTCPLossFailures            18                  0.0 TcpExtTCPFastRetrans              1517                0.0 TcpExtTCPForwardRetrans          104                  0.0 TcpExtTCPSlowStartRetrans        172                  0.0 TcpExtTCPTimeouts                2764                0.0 TcpExtTCPLossProbes              5201                0.0 TcpExtTCPLossProbeRecovery        2858                0.0 TcpExtTCPSackRecoveryFail        74                  0.0 TcpExtTCPRcvCollapsed            460                  0.0 TcpExtTCPDSACKOldSent            1645                0.0 TcpExtTCPDSACKOfoSent            21                  0.0 TcpExtTCPDSACKRecv                879                  0.0 TcpExtTCPAbortOnData              4314                0.0 TcpExtTCPAbortOnClose            346                  0.0 TcpExtTCPAbortOnTimeout          186                  0.0 TcpExtTCPDSACKIgnoredNoUndo      615                  0.0 TcpExtTCPSpuriousRTOs            95                  0.0 TcpExtTCPSackShifted              402                  0.0 TcpExtTCPSackMerged              2048                0.0 TcpExtTCPSackShiftFallback        2592                0.0 TcpExtTCPRcvCoalesce              145162              0.0 TcpExtTCPOFOQueue                36672                0.0 TcpExtTCPOFOMerge                21                  0.0 TcpExtTCPChallengeACK            329                  0.0 TcpExtTCPSYNChallenge            47                  0.0 IpExtInNoRoutes                  2                    0.0 IpExtInOctets                    1568628267          0.0 IpExtOutOctets                    1158526375          0.0 IpExtInNoECTPkts                  9828130              0.0 IpExtInECT0Pkts                  10                  0.0 IpExtInCEPkts                    3                    0.0

ss命令

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# ss -s Total : 319 ( kernel 752 ) TCP :    187 ( estab 114 , closed 58 , orphaned 0 , synrecv 0 , timewait 58 / 0 ) , ports 0 Transport Total     IP         IPv6 *          752        –          –          RAW        0          0          0          UDP        3          2          1          TCP        129        113        16        INET        132        115        17        FRAG        0          0          0

netstat命令

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# netstat -i Kernel Interface table Iface   MTU Met   RX – OK RX – ERR RX – DRP RX – OVR     TX – OK TX – ERR TX – DRP TX – OVR Flg eth0        9001 0    2194916        0        0 0        1424609        0        0        0 BMRU lo          65536 0    7670598        0        0 0        7670598        0        0        0 LRU

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# netstat -s Ip :      9743496 total packets received      0 forwarded      0 incoming packets discarded      9743494 incoming packets delivered      9068146 requests sent out Icmp :      2147 ICMP messages received      1143 input ICMP message failed .      InCsumErrors : 2      ICMP input histogram :          destination unreachable : 1361          timeout in transit : 56          source quenches : 1          echo requests : 701          echo replies : 26      750 ICMP messages sent      0 ICMP messages failed      ICMP output histogram :          destination unreachable : 23          echo request : 26          echo replies : 701 IcmpMsg :          InType0 : 26          InType3 : 1361          InType4 : 1          InType8 : 701          InType11 : 56          OutType0 : 701          OutType3 : 23          OutType8 : 26 Tcp :      679665 active connections openings      911387 passive connection openings      58018 failed connection attempts      14608 connection resets received      118 connections established      9696894 segments received      9047825 segments send out      6700 segments retransmited      47 bad segments received .      67249 resets sent Udp :      44425 packets received      23 packets to unknown port received .      0 packet receive errors      44457 packets sent UdpLite : TcpExt :      140 invalid SYN cookies received      704 resets received for embryonic SYN_RECV sockets      23 packets pruned from receive queue because of socket buffer overrun      616402 TCP sockets finished time wait in fast timer      20 packets rejects in established connections because of timestamp      52124 delayed acks sent      45 delayed acks further delayed because of locked socket      Quick ack mode was activated 1519 times      32 SYNs to LISTEN sockets dropped      19258 packets directly queued to recvmsg prequeue .      45185 bytes directly in process context from backlog      394312 bytes directly received in process context from prequeue      943942 packet headers predicted      3478 packets header predicted and directly queued to user      3246338 acknowledgments not containing data payload received      547737 predicted acknowledgments      650 times recovered from packet loss by selective acknowledgements      Detected reordering 1 times using FACK      Detected reordering 8 times using SACK      Detected reordering 23 times using time stamp      1 congestion windows fully recovered without slow start      23 congestion windows partially recovered using Hoe heuristic      1 congestion windows recovered without slow start by DSACK      854 congestion windows recovered without slow start after partial ack      TCPLostRetransmit : 162      135 timeouts after SACK recovery      18 timeouts in loss state      1517 fast retransmits      104 forward retransmits      172 retransmits in slow start      2764 other TCP timeouts      TCPLossProbes : 5202      TCPLossProbeRecovery : 2859      74 SACK retransmits failed      460 packets collapsed in receive queue due to low socket buffer      1646 DSACKs sent for old packets      21 DSACKs sent for out of order packets      879 DSACKs received      4314 connections reset due to unexpected data      346 connections reset due to early user close      186 connections aborted due to timeout      TCPDSACKIgnoredNoUndo : 615      TCPSpuriousRTOs : 95      TCPSackShifted : 402      TCPSackMerged : 2048      TCPSackShiftFallback : 2592      TCPRcvCoalesce : 145187      TCPOFOQueue : 36673      TCPOFOMerge : 21      TCPChallengeACK : 329      TCPSYNChallenge : 47 IpExt :      InNoRoutes : 2      InOctets : 1570012766      OutOctets : 1159491497      InNoECTPkts : 9838700      InECT0Pkts : 10      InCEPkts : 3

ip命令

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# ip -s link 1 : lo : < LOOPBACK , UP , LOWER_UP > mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default      link / loopback 00 : 00 : 00 : 00 : 00 : 00 brd 00 : 00 : 00 : 00 : 00 : 00      RX : bytes   packets   errors   dropped overrun mcast         883395575    7672258    0        0        0        0             TX : bytes   packets   errors   dropped carrier collsns      883395575    7672258    0        0        0        0        2 : eth0 : < BROADCAST , MULTICAST , UP , LOWER_UP > mtu 9001 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000      link / ether 02 : 7a : 7d : d2 : f7 : 21 brd ff : ff : ff : ff : ff : ff      RX : bytes   packets   errors   dropped overrun mcast         694754381    2197268    0        0        0        0             TX : bytes   packets   errors   dropped carrier collsns      296980409    1425257    0        0        0        0

sar命令

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# sar -n DEV 1 Linux 3.13.0 – 48 – generic ( beta )    2015年 08月 17日    _x86_64_          ( 4 CPU ) 14时 46分 54秒      IFACE   rxpck / s    txpck / s      rxkB / s      txkB / s    rxcmp / s    txcmp / s    rxmcst / s    % ifutil 14时 46分 55秒        eth0      12.00        5.00        0.97        1.18        0.00        0.00        0.00        0.00 14时 46分 55秒          lo      10.00      10.00        1.00        1.00        0.00        0.00        0.00        0.00 14时 46分 55秒      IFACE   rxpck / s    txpck / s      rxkB / s      txkB / s    rxcmp / s    txcmp / s    rxmcst / s    % ifutil 14时 46分 56秒        eth0        1.00        1.00        0.05        0.47        0.00        0.00        0.00        0.00 14时 46分 56秒          lo      16.00      16.00        2.17        2.17        0.00        0.00        0.00        0.00 14时 46分 56秒      IFACE   rxpck / s    txpck / s      rxkB / s      txkB / s    rxcmp / s    txcmp / s    rxmcst / s    % ifutil 14时 46分 57秒        eth0        5.00        3.00        0.26        0.61        0.00        0.00        0.00        0.00 14时 46分 57秒          lo      10.00      10.00        1.00        1.00        0.00        0.00        0.00        0.00

还有其它工具如nload，iftop等等，不一一列举了。

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