gnuplot用法

一组数据一个图

# gnuplot
set terminal png
set output 'iops.png'
set title "IOPS" 
set xlabel "time(ms)"
set ylabel "iops"
set xrange [5000000:35000000]
set yrange [0:100000]
plot 'randread_iops.log' 

多组数据放在一个图中

 plot 'read_seq_64k_1_32_libaio_bw.log' with points pt 1,'write_seq_64k_1_32_libaio_bw.log' with points pt 2,'read_rand_4k_1_32_libaio_bw.log' with points pt 3,'write_rand_4k_1_32_libaio_bw.log' with points pt 4 

脚本plot.sh

#/bin/bash
#set -x


script_name=$0
if [ -z "$1" ] || [ -z "$2" ];then
echo "Usage: 
    $script_name title input_file [yrange]
title, iops/bw/clat
input_file, the file you want to plot.
yrange, if you want you can set the yrange."
    exit 1
fi


name=$1
input=$2
range_value=$3


if [ $name == "iops" ];then
title="IOPS"
ylabel="iops"
elif [ $name == "bw" ];then
title="Bandwidth"
ylabel="Bandwidth(KB/s)"
elif [ $name == "clat" ];then
title="CLAT"
ylabel="clat(us)"
fi
output=`echo $input | sed -e 's/log/png/'`


if [ -z "${range_value}" ];then
echo "
set terminal png
set title \"$title\"
set xlabel 'time(ms)'
set ylabel \"$ylabel\"
set output \"$output\"
plot \"$input\"
" | gnuplot
elif [ -n "${range_value}" ];then
yrange="[0:${range_value}]"
echo "
set terminal png
set title \"$title\"
set xlabel 'time(ms)'
set ylabel \"$ylabel\"
set yrange "$yrange"
set output \"$output\"
plot \"$input\"
" | gnuplot
fi

一组数据一个图

# gnuplot
set terminal png
set output 'iops.png'
set title "IOPS" 
set xlabel "time(ms)"
set ylabel "iops"
set xrange [5000000:35000000]
set yrange [0:100000]
plot 'randread_iops.log' 

多组数据放在一个图中

 plot 'read_seq_64k_1_32_libaio_bw.log' with points pt 1,'write_seq_64k_1_32_libaio_bw.log' with points pt 2,'read_rand_4k_1_32_libaio_bw.log' with points pt 3,'write_rand_4k_1_32_libaio_bw.log' with points pt 4 

脚本plot.sh

#/bin/bash
#set -x


script_name=$0
if [ -z "$1" ] || [ -z "$2" ];then
echo "Usage: 
    $script_name title input_file [yrange]
title, iops/bw/clat
input_file, the file you want to plot.
yrange, if you want you can set the yrange."
    exit 1
fi


name=$1
input=$2
range_value=$3


if [ $name == "iops" ];then
title="IOPS"
ylabel="iops"
elif [ $name == "bw" ];then
title="Bandwidth"
ylabel="Bandwidth(KB/s)"
elif [ $name == "clat" ];then
title="CLAT"
ylabel="clat(us)"
fi
output=`echo $input | sed -e 's/log/png/'`


if [ -z "${range_value}" ];then
echo "
set terminal png
set title \"$title\"
set xlabel 'time(ms)'
set ylabel \"$ylabel\"
set output \"$output\"
plot \"$input\"
" | gnuplot
elif [ -n "${range_value}" ];then
yrange="[0:${range_value}]"
echo "
set terminal png
set title \"$title\"
set xlabel 'time(ms)'
set ylabel \"$ylabel\"
set yrange "$yrange"
set output \"$output\"
plot \"$input\"
" | gnuplot
fi