Network Traffic Statistics utility nicstat

Network Traffic Statistics utility nicstat

• Nicstat Installation

  Nicstat installation:

  # Wget-c http://nchc.dl.sourceforge.net/project/nicstat/nicstat-1.92.tar.gz# tar zxvf nicstat-1.92.tar.gz # cd nicstat-1.92 # cp Makefile. linux Makefile # uname-mx86_64 # diff Makefile. linux # if it is not a 64-bit machine, you do not need to modify Makefile17c17 <CFLAGS =$ (COPT) ---> CFLAGS =$ (COPT) -m3225c25 <CPUTYPE = x86_64 ---> CPUTYPE = i386 # make & make install

• Use nicstat

  There is a nicstat. sh script in the extract package directory nicstat-1.92.

  • View Nic speed (-l ):

    [root@CentOS192 nicstat-1.92]# ./nicstat.sh -lInt      Loopback   Mbit/s Duplex Statelo            Yes        -   unkn    upeth0           No     1000   full    up

  • Check the result twice at an interval of 3 seconds (note % Util AND Sat ):

    [root@centos192 nicstat-1.92]# ./nicstat 3 2    Time      Int   rKB/s   wKB/s   rPk/s   wPk/s    rAvs    wAvs %Util    Sat06:19:46       lo    0.72    0.72    2.15    2.15   341.2   341.2  0.00   0.0006:19:46     eth0    0.89    0.15    1.37    0.92   660.4   163.6  0.00   0.00    Time      Int   rKB/s   wKB/s   rPk/s   wPk/s    rAvs    wAvs %Util    Sat06:19:49       lo    0.00    0.00    0.00    0.00    0.00    0.00  0.00   0.0006:19:49     eth0    0.02    0.12    0.33    0.33   66.00   354.0  0.00   0.00

    Time column: the response Time of the current sample.
    Lo and eth0: Nic name.
    RKB/s: Number of kilobytes received per second.
    WKB/s: Number of kilobytes written per second.
    RPk/s: the number of packets received per second.
    WPk/s: number of data packets written per second.
    RAvs: Average size of received data packets.
    WAvs: Average size of transmitted data packets.
    % Util: Nic utilization (percentage ).
    Sat: number of errors per second on the network card. Whether the network card is close to a full indicator. We recommend you use the-x option to view more statistics when trying to diagnose network problems.

  • View extension information (-x and-s ):

    [root@centos192 nicstat-1.92]# ./nicstat 3 2 -x06:33:57      RdKB    WrKB   RdPkt   WrPkt   IErr  OErr  Coll  NoCP Defer  %Utillo            0.69    0.69    2.08    2.08   0.00  0.00  0.00  0.00  0.00   0.00eth0          0.86    0.14    1.33    0.89   0.00  0.00  0.00  0.00  0.00   0.0006:34:00      RdKB    WrKB   RdPkt   WrPkt   IErr  OErr  Coll  NoCP Defer  %Utillo            0.00    0.00    0.00    0.00   0.00  0.00  0.00  0.00  0.00   0.00eth0          0.02    0.12    0.33    0.33   0.00  0.00  0.00  0.00  0.00   0.00

    [root@centos192 nicstat-1.92]# ./nicstat.sh -s    Time      Int          rKB/s          wKB/s06:37:48       lo          0.685          0.68506:37:48     eth0          0.848          0.140

  • View tcp information (-t ):

    [root@centos192 nicstat-1.92]# ./nicstat.sh -t05:15:05    InKB   OutKB   InSeg  OutSeg Reset  AttF %ReTX InConn OutCon DropsTCP         0.00    0.00    4.01    3.50  0.00  0.01 0.000   0.05   0.09  0.0

    InKB: the number of kilobytes received per second.
    OutKB: The kilobytes transmitted per second.
    InSeg: the TCP data segment received per second (TCP Segments ).
    OutSeg: Specifies the TCP segment (TCP Segments) transmitted per second ).
    Reset: the number of times the TCP connection has been directly changed from ESTABLISHED or CLOSE-WAIT to CLOSED.
    AttF: indicates the number of times a TCP connection has changed directly from a SYN-SENT or SYN-RCVD to a CLOSED state, plus the number of times a TCP connection has changed directly from a SYN-RCVD state to a LISTEN state
    % ReTX: indicates the percentage of TCP segment (TCP Segments) retransmission. That is, the transmitted TCP segment contains one or more eight bytes previously transmitted.
    InConn: the number of times the TCP connection has changed from the LISTEN state to the SYN-RCVD state.
    OutCon: the number of times the TCP connection has changed from the CLOSED state to the SYN-SENT state.
    Drops: indicates the number of dropped connections from the queue of the completed connection and the queue of the incomplete connection.

  • View udp information (-u ):

    [root@centos192 nicstat-1.92]# ./nicstat.sh -u06:39:42                    InDG   OutDG     InErr  OutErrUDP                         0.01    0.01      0.00    0.00

    InDG: UDP datagram rams received per second)
    OutDG: UDP datagram rams transmitted per second)
    InErr: received packets that cannot be processed due to inclusion errors
    OutErr: data packets that cannot be transmitted due to errors.

  • By default, the unit is KB. Now, the unit is MB:

    [root@centos192 nicstat-1.92]# ./nicstat.sh -M    Time      Int   rMbps   wMbps   rPk/s   wPk/s    rAvs    wAvs %Util    Sat05:16:55       lo    0.01    0.01    2.55    2.55   341.2   341.2  0.00   0.0005:16:55     eth0    0.01    0.00    1.61    1.08   667.3   163.7  0.00   0.00

  • Other usage:

    [root@centos192 nicstat-1.92]# ./nicstat.sh  -x -t -u06:49:25    InKB   OutKB   InSeg  OutSeg Reset  AttF %ReTX InConn OutCon DropsTCP         0.00    0.00    3.16    2.74  0.00  0.01 0.000   0.04   0.07  0.0006:49:25                    InDG   OutDG     InErr  OutErrUDP                         0.01    0.01      0.00    0.0006:49:25      RdKB    WrKB   RdPkt   WrPkt   IErr  OErr  Coll  NoCP Defer  %Utillo            0.67    0.67    2.00    2.00   0.00  0.00  0.00  0.00  0.00   0.00eth0          0.83    0.14    1.29    0.86   0.00  0.00  0.00  0.00  0.00   0.00

    [root@centos192 nicstat-1.92]# ./nicstat.sh -a06:50:43    InKB   OutKB   InSeg  OutSeg Reset  AttF %ReTX InConn OutCon DropsTCP         0.00    0.00    3.15    2.74  0.00  0.01 0.000   0.04   0.07  0.0006:50:43                    InDG   OutDG     InErr  OutErrUDP                         0.01    0.01      0.00    0.0006:50:43      RdKB    WrKB   RdPkt   WrPkt   IErr  OErr  Coll  NoCP Defer  %Utillo            0.66    0.66    1.99    1.99   0.00  0.00  0.00  0.00  0.00   0.00eth0          0.82    0.14    1.28    0.86   0.00  0.00  0.00  0.00  0.00   0.00

    "-A" is equivalent to "-x-t-u.