TcpStat

Pointers

• http://www.frenchfries.net/paul/tcpstat/index.html
• LibPcap - the packet capture library and related tools
• UnixGeekTools - other great tools for unix geeks

Sample Output

       bash-2.03$ tcpstat -i eth0
       Time:940948785  n=107   avg=251.81      stddev=422.45   bps=43110.40
       Time:940948790  n=99    avg=400.21      stddev=539.39   bps=63393.60
       Time:940948795  n=43    avg=257.16      stddev=352.83   bps=17692.80

These default statistics are (from left to right):

• timestamp
• the number of packets passed through the interface
• the average size of each packet
• the standard deviation of the packet size
• the bandwidth in bits per second.