Graphing apache benchmark results with gnuplot

plot.p

# Output to a jpeg file
set terminal jpeg size 1280,720

# Set the aspect ratio of the graph
set size 1, 1

# The file to write to
set output "timeseries.jpg"

# The graph title
set title "Benchmark testing"

# Where to place the legend/key
set key left top

# Draw gridlines oriented on the y axis
set grid y

# Specify that the x-series data is time data
set xdata time

# Specify the *input* format of the time data
set timefmt "%s"

# Specify the *output* format for the x-axis tick labels
set format x "%S"

# Label the x-axis
set xlabel 'seconds'

# Label the y-axis
set ylabel "response time (ms)"

# Tell gnuplot to use tabs as the delimiter instead of spaces (default)
set datafile separator '\t'

# Plot the data
plot "out.dat" every ::2 using 2:5 title 'response time' with points

sh

$ ab -n 1000 -c 10 -g out.dat http://example.com/