user-tools/PMbwmon

   1 #!/bin/bash
   2
   3 true <<EOF
   4 =pod
   5
   6 =head1 NAME
   7
   8 PMbwmon - Poor man's bandwidth monitor
   9
  10 =cut
  11
  12 EOF
  13
  14
  15 set -e
  16
  17 usage()
  18 {
  19         echo "Usage: $0 [kMG][bB]" >&2
  20         exit 1
  21 }
  22
  23
  24 declare -A rx0
  25 declare -A tx0
  26 declare -A rx1
  27 declare -A tx1
  28 declare -A rxd
  29 declare -A txd
  30
  31 prefix=${1:-kb}
  32
  33 cd /sys/class/net
  34
  35
  36 case "${prefix:0:1}" in
  37 k)      qt=1024;;
  38 M)      qt=$[1024*1024];;
  39 G)      qt=$[1024*1024*1024];;
  40 b)      qt=1;;
  41 B)      qt=8;;
  42 *)      usage;;
  43 esac
  44 if [ "${#prefix}" -gt 1 ]; then
  45   case "${prefix:1:1}" in
  46   B)    qt=$[qt*8];;
  47   b)    true;;
  48   *)    usage;;
  49   esac
  50 fi
  51
  52
  53 shot=0
  54 while true
  55 do
  56     shot=$[shot+1]
  57     declare -A masters
  58
  59     for master in `cat /sys/class/net/bonding_masters 2>/dev/null`
  60     do
  61         masters[$master]=1
  62         var=slaves_$master
  63         declare -a $var
  64         eval "$var=($(cat /sys/class/net/$master/bonding/slaves))"
  65     done
  66
  67     for iface in *
  68     do
  69             [ ! -d "$iface" ] && continue
  70             [ "$iface" = lo ] && continue
  71
  72             rx0[$iface]=${rx1[$iface]:-0}
  73             tx0[$iface]=${tx1[$iface]:-0}
  74             rx1[$iface]=`cat /sys/class/net/$iface/statistics/rx_bytes`
  75             tx1[$iface]=`cat /sys/class/net/$iface/statistics/tx_bytes`
  76
  77             rxd[$iface]=$[ ${rx1[$iface]} - ${rx0[$iface]} ]
  78             txd[$iface]=$[ ${tx1[$iface]} - ${tx0[$iface]} ]
  79
  80             if [ $shot -gt 1 ]
  81             then
  82                 printf "%6s  -  RX: %8d  TX: %8d  %sps"  "$iface" $[ ${rxd[$iface]} / $qt ] $[ ${txd[$iface]} / $qt ] "$prefix"
  83
  84                 if [ -n "${masters[$iface]}" ]
  85                 then
  86                         taps_rx_sum=0
  87                         taps_tx_sum=0
  88                         var=slaves_$iface
  89                         declare -a slaves
  90                         eval "slaves=(\${slaves_$iface[@]})"
  91
  92                         for slave in "${slaves[@]}"
  93                         do
  94                                 taps_rx_sum=$[ $taps_rx_sum + ${rxd[$slave]} ]
  95                                 taps_tx_sum=$[ $taps_tx_sum + ${txd[$slave]} ]
  96                         done
  97                         taps_rx_sum=$[ $taps_rx_sum / $qt ]
  98                         taps_tx_sum=$[ $taps_tx_sum / $qt ]
  99                         bond_rx=$[ ${rxd[$iface]} / $qt ]
 100                         bond_tx=$[ ${txd[$iface]} / $qt ]
 101
 102                         rx_comp_rt=''
 103                         tx_comp_rt=''
 104                         if [ $taps_rx_sum -ne 0 -a $taps_rx_sum -ne $bond_rx ]
 105                         then
 106                                 rx_comp_rt=$[ ${bond_rx} / $taps_rx_sum ]
 107                         fi
 108                         if [ $taps_tx_sum -ne 0 -a $taps_tx_sum -ne $bond_tx ]
 109                         then
 110                                 tx_comp_rt=$[ ${bond_tx} / $taps_tx_sum ]
 111                         fi
 112
 113                         printf "  -  comp%%  RX: %5.1f%%  TX: %5.1f%%"  "$rx_comp_rt" "$tx_comp_rt"
 114                 fi
 115                 echo
 116             fi
 117     done
 118
 119     echo
 120     sleep 1
 121 done