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ajustes #2

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cc0015c
added min PKTS=2
wesleyleite Nov 1, 2013
4b63223
adicionado pacote perdido e modificado para print interativo
wesleyleite Apr 2, 2014
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64 changes: 34 additions & 30 deletions timer.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ ajuda() {
echo "Desenvolvido por Rodrigo Martins"
echo
echo "$0 NUM HOST"
echo "NUM = Total de pacotes que esperar retorno"
echo "NUM = Total de pacotes que esperar retorno MIN=2"
echo "HOST = Opcional mas pode ser informado um host para disparo"
echo
exit
Expand All @@ -31,16 +31,14 @@ disparar() {

local pkts=$1
local destino=$2
echo
[ -z "${destino}" ] && destino="uw.edu"
echo ">> Disparando contra [ ${destino} ( ${pkts} ) ]"
MS=$( ping -c ${pkts} ${destino} 2>> log.txt |
grep -Ewo 'time=([0-9]){1,}\ ms' |
sed -r 's/time=|ms//g' )
}

gerar() {

local pkts=$1
local destino=$2
local i=1
local RTT
local SRTT
Expand All @@ -49,46 +47,52 @@ gerar() {
local RTO
local flag=0

echo " RTT SRTT SVAR RTO"
for RTT in ${MS}
for i in $( seq 1 ${pkts} )
do
[ ${flag} -eq 1 ] && {
#otimizar, remover |, e.g. let SRTT=(1-$ALFA)*$SRTT + $ALFA*$RTT
#SRTT=$(((1-ALFA)*SRTT+ALFA*RTT))
SRTT=$(echo "(1-${ALFA})*$SRTT+${ALFA}*${RTT}" | bc)
VAR=$(echo "${RTT} - ${SRTT}" | bc )
#otmizar, maneira mais inteligente de remover sinal
VAR=$(echo $VAR | sed 's/^-//')
SVAR=$(echo "(1-${BETA})*${SVAR}+${BETA}*${VAR}" | bc )
RTO=$(echo "${SRTT}+4*${SVAR}" | bc)
} || {
RTT0=$RTT
SRTT=$RTT0
let SVAR=$RTT0/2
RTO=0
flag=1
}
printf "%04d %07d %20f %20f %20f\n" $((i++)) ${RTT} ${SRTT} ${SVAR} ${RTO}
disparar 1 ${destino}
RTT=$MS
[ ! -z "${RTT}" ] && {
[ ${flag} -eq 1 ] && {
#otimizar, remover |, e.g. let SRTT=(1-$ALFA)*$SRTT + $ALFA*$RTT
#SRTT=$(((1-ALFA)*SRTT+ALFA*RTT))
SRTT=$(echo "(1-${ALFA})*$SRTT+${ALFA}*${RTT}" | bc)
VAR=$(echo "${RTT} - ${SRTT}" | bc )
#otmizar, maneira mais inteligente de remover sinal
VAR=$(echo $VAR | sed 's/^-//')
SVAR=$(echo "(1-${BETA})*${SVAR}+${BETA}*${VAR}" | bc )
RTO=$(echo "${SRTT}+4*${SVAR}" | bc)
} || {
RTT0=${RTT}
SRTT=${RTT0}
SVAR=$((RTT0/2))
RTO=0
flag=1
}
printf "%04d %07d %20f %20f %20f\n" $((i++)) ${RTT} ${SRTT} ${SVAR} ${RTO}
} ||
printf "%04d %s\n" $((i++)) "PERDIDO"

done
}

# main


# validar se quantidade de pacotes enviadas é numerico
# pegar somente dois primeiros limitando a ate 99
TPKTS=$1
#TPKTS=${TPKTS:0:2 }
TPKTS=$( echo ${TPKTS} |
grep -Ewo '^[0-9]+$' )

[ $# -le 0 ] || [ -z ${TPKTS} ] && ajuda
[ $# -le 0 ] || [ -z ${TPKTS} ] || [ ${TPKTS} -le 1 ] && ajuda

DHOST=$2
[ -z "${DHOST}" ] && DHOST="uw.edu"
echo ">> Disparando contra [ ${DHOST} ( ${TPKTS} ) ]"


disparar ${TPKTS} $2
gerar
echo " RTT SRTT SVAR RTO"
#
#disparar ${TPKTS} $2
gerar ${TPKTS} ${DHOST}


#considerar perdas
Expand Down