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 =head1 SYNOPSIS
  11
  12 PMbwmon [kMG][B<bit> | B<Byte>] [I<INTERFACES>...]
  13
  14 =cut
  15
  16 EOF
  17
  18
  19 set -e
  20
  21 . /usr/lib/tool/bash-utils
  22
  23 wrong_usage()
  24 {
  25         pod2text "$0" >&2
  26         exit 1
  27 }
  28
  29
  30 declare -A rx0
  31 declare -A tx0
  32 declare -A rx1
  33 declare -A tx1
  34 declare -A rxd
  35 declare -A txd
  36
  37 prefix=${1:-kbit}
  38 shift
  39 ifaces=("$@")
  40
  41 cd /sys/class/net
  42
  43
  44 case "${prefix:0:1}" in
  45 k)      qt=1024;;
  46 M)      qt=$[1024*1024];;
  47 G)      qt=$[1024*1024*1024];;
  48 b)      qt=1;;
  49 B)      qt=8;;
  50 *)      wrong_usage;;
  51 esac
  52 if [ "${#prefix}" -gt 1 ]; then
  53   case "${prefix:1}" in
  54   Byte) qt=$[qt*8];;
  55   bit)  true;;
  56   *)    wrong_usage;;
  57   esac
  58 fi
  59
  60
  61 shot=0
  62 while true
  63 do
  64         shot=$[shot+1]
  65         declare -A masters
  66
  67         for master in `cat /sys/class/net/bonding_masters 2>/dev/null`
  68         do
  69                 masters[$master]=1
  70                 var=slaves_$master
  71                 declare -a $var
  72                 eval "$var=($(cat /sys/class/net/$master/bonding/slaves))"
  73         done
  74
  75         for iface in *
  76         do
  77                         [ ! -d "$iface" ] && continue
  78                         [ "$iface" = lo ] && continue
  79                         if [ -n "${ifaces[0]}" ]
  80                         then
  81                                 match=0
  82                                 for iface_pattern in "${ifaces[@]}"
  83                                 do
  84                                         if [[ $iface_pattern =~ ^(.+)\+$ ]]
  85                                         then
  86                                                 re=${BASH_REMATCH[1]}.+
  87                                                 if [[ $iface =~ ^$re$ ]]
  88                                                 then
  89                                                         match=1
  90                                                 fi
  91                                         elif [ "$iface" = "$iface_pattern" ]
  92                                         then
  93                                                 match=1
  94                                         fi
  95                                         if [ $match = 1 ]
  96                                         then
  97                                                 break
  98                                         fi
  99                                 done
 100                                 if [ $match = 0 ]
 101                                 then
 102                                         continue
 103                                 fi
 104                         fi
 105
 106                         rx0[$iface]=${rx1[$iface]:-0}
 107                         tx0[$iface]=${tx1[$iface]:-0}
 108                         rx1[$iface]=`cat /sys/class/net/$iface/statistics/rx_bytes`
 109                         tx1[$iface]=`cat /sys/class/net/$iface/statistics/tx_bytes`
 110
 111                         rxd[$iface]=$[ ${rx1[$iface]} - ${rx0[$iface]} ]
 112                         txd[$iface]=$[ ${tx1[$iface]} - ${tx0[$iface]} ]
 113
 114                         if [ $shot -gt 1 ]
 115                         then
 116                                 printf "%6s  -  RX: %8d  TX: %8d  %sps"  "$iface" $[ ${rxd[$iface]} / $qt ] $[ ${txd[$iface]} / $qt ] "$prefix"
 117
 118                                 if [ -n "${masters[$iface]}" ]
 119                                 then
 120                                                 taps_rx_sum=0
 121                                                 taps_tx_sum=0
 122                                                 var=slaves_$iface
 123                                                 declare -a slaves
 124                                                 eval "slaves=(\${slaves_$iface[@]})"
 125
 126                                                 for slave in "${slaves[@]}"
 127                                                 do
 128                                                                 taps_rx_sum=$[ $taps_rx_sum + ${rxd[$slave]} ]
 129                                                                 taps_tx_sum=$[ $taps_tx_sum + ${txd[$slave]} ]
 130                                                 done
 131                                                 taps_rx_sum=$[ $taps_rx_sum / $qt ]
 132                                                 taps_tx_sum=$[ $taps_tx_sum / $qt ]
 133                                                 bond_rx=$[ ${rxd[$iface]} / $qt ]
 134                                                 bond_tx=$[ ${txd[$iface]} / $qt ]
 135
 136                                                 rx_comp_rt=''
 137                                                 tx_comp_rt=''
 138                                                 if [ $taps_rx_sum -ne 0 -a $taps_rx_sum -ne $bond_rx ]
 139                                                 then
 140                                                                 rx_comp_rt=$[ ${bond_rx} / $taps_rx_sum ]
 141                                                 fi
 142                                                 if [ $taps_tx_sum -ne 0 -a $taps_tx_sum -ne $bond_tx ]
 143                                                 then
 144                                                                 tx_comp_rt=$[ ${bond_tx} / $taps_tx_sum ]
 145                                                 fi
 146
 147                                                 printf "  -  comp%%  RX: %5.1f%%  TX: %5.1f%%"  "$rx_comp_rt" "$tx_comp_rt"
 148                                 fi
 149                                 echo
 150                         fi
 151         done
 152
 153         echo
 154         sleep 1
 155 done