3.System3.0:> ttcp -s -t localhost
ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001  tcp  -> localhost
ttcp-t: socket
ttcp-t: connect
ttcp-t: 16777216 bytes in 28.02 real seconds = 584.81 KB/sec +++
ttcp-t: 2048 I/O calls, msec/call = 14.01, calls/sec = 73.10
ttcp-t: 0:28real

4.System3.0:> ttcp -s -r
ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001  tcp
ttcp-r: socket
ttcp-r: accept from 127.0.0.1
ttcp-r: 16777216 bytes in 28.00 real seconds = 585.07 KB/sec +++
ttcp-r: 2155 I/O calls, msec/call = 13.31, calls/sec = 76.96
ttcp-r: 0:28real