
milliseconds ping time;   bytes/second ftp rate
       5000 ++-----+------------------+-------------------+------------------+-----------+-------+------------------+---------++
            |      +                  +                   +                  +           +       +                  +          |
            |                                                                                          'gnuplot.ftp-rate' #### |
            |                                                                                          'gnuplot.ftp-rate'  A   |
            |                                                                                         'gnuplot.ping-time'  B   |
            |                                                                                         'gnuplot.ping-time' **** |
            |                                                                                                                  |
            |                                                                                                                  |
            |                                                                                                                  |
            |                                                                                                                  |
            |                                                                                                                  |
            |                                                                                                                  |
       2000 ++                                                                                                                ++
            |                                                                                                                  |
            |                                                                                                     **B          |
            |                                                                                                *****             |
            |                                                                                            ****                  |
            |                                                                                       *****                      |
            |                                                                                    B**                           |
            |                                                                      ######A#######A##################           |
            |                                                               #A#####          **                     A          |
            |                                                            ###                *                                  |
       1000 ++                                                         ##                 **                                  ++
            |                                                       ###                 *B                                     |
            |                                                    ###                  **                                       |
            |                                                  ##                   **                                         |
            |                                               ###                   **                                           |
            |                                            #A#                    **                                             |
            |                                        ####                     **                                               |
            |                                     ###                       *B                                                 |
            |                                  ###                       ***                                                   |
        500 ++                             ####                        **                                                     ++
            |                           ###                         ***                                                        |
            |                        #A#                         ***                                                           |
            |                     ###                          **                                                              |
            |                  ###                          ***                                                                |
            |              ####                        ***B*                                                                   |
            |           ###                     *******                                                                        |
            |        ###                  ******                                                                               |
            |      A#             ****B***                                                                                     |
            |           **********                                                                                             |
            |      B****                                                                                                       |
            |                                                                                                                  |
            |                                                                                                                  |
        200 ++                                                                                                                ++
            |                                                                                                                  |
            |                                                                                                                  |
            |                                                                                                                  |
            |                                                                                                                  |
            |                                                                                                                  |
            |                                                                                                                  |
            |                                                                                                                  |
            |      +                  +                   +                  +           +       +                  +          |
        100 ++-----+------------------+-------------------+------------------+-----------+-------+------------------+---------++
                  128                256                 512               1024        1536    2048               4096
                                                              tcp_window_max

