In contrast, tcpflow reconstructs the actual data streams and stores each flow in a separate file for later analysis. Max bytes per flow. The default is to store an unlimited number of bytes per flow.
Higher numbers produce more messages.
Numbers higher than 10 can produce a large amount of debugging information useful only to developers. Max file descriptors used. Higher numbers use more system resources, but usually perform better. The -v option will report how many file descriptors tcpflow is using. Print usage information and exit.