
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   15362048       4096
                                     tcp_window_max

