Crear grafico con Apache Benchmark (ab)

benchgrafico.sh

#!/bin/bash

#Ejecuta un Apache Benchmark (ab) y lo grafica usando gnuplot


#tamaño imagen
w=1200
h=600

#úsame :3 pero úsame bien
uso="Uso: $0 <host> [<concurrentes> <totales>] [archivo sin punto]\nEjemplo: $0 http://54.148.131.11/ust-home/ 1 2 imagen\n\n"
[[ $1 == "" ]] && printf "$uso" && exit
[[ $1 != "" ]] && host=$1
[[ $2 != "" ]] && [[ $3 == "" ]] && printf "$uso" && exit
[[ $4 != "" ]] && [[ "${4: -4:1}" == "." ]] && printf "$uso (SIN PUNTO!)" && exit

#variables qls de archivos
tmp=$(date | md5) && tmp=${tmp:0:7}
data=$tmp.data
png=$tmp.png
ab=/tmp/ab-$tmp
plot=/tmp/plot-$tmp
[[ $4 != "" ]] && png=$4.png

#template pa gnuplot
PLOT="
set terminal png size $w,$h
set size 1, 1
set output \"$png\"
set title \"$3 solicitudes ($2 conexiones concurrentes) \n $host\"
set key left top
set grid y
set xdata time
set timefmt \"%s\"
set format x \"%S\"
set xlabel 'segundos'
set ylabel \"tiempo respuesta (ms)\"
set datafile separator '\t'
plot \"$ab\" every ::2 using 2:5 title '' with points
"
echo "$PLOT" > $plot

echo "* AB ($ab)" && ab -c $2 -n $3 -g $ab $host 
echo "* PLOT ($plot)" && gnuplot $plot || exit 0
[[ $4 != "" ]] && open $png
[[ $4 == "" ]] && echo "* Terminado!! Imagen quedó en $png"


# subl plot.xd