release/src/router/tcpdump/atime.awk

   1 $6 ~ /^ack/ && $5 !~ /[SFR]/    {
   2         # given a tcpdump ftp trace, output one line for each ack
   3         # in the form
   4         #   <ack time> <seq no>
   5         # where <ack time> is the time packet was acked (in seconds with
   6         # zero at time of first packet) and <seq no> is the tcp sequence
   7         # number of the ack divided by 1024 (i.e., Kbytes acked).
   8         #
   9         # convert time to seconds
  10         n = split ($1,t,":")
  11         tim = t[1]*3600 + t[2]*60 + t[3]
  12         if (! tzero) {
  13                 tzero = tim
  14                 OFS = "\t"
  15         }
  16         # get packet sequence number
  17         printf "%7.2f\t%g\n", tim-tzero, $7/1024
  18         }