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#!/bin/bash
# A small script to help visualizing CPU usage over time data collected on CI
# using `gnuplot`.
#
# This script is expected to be called with two arguments. The first is the full
# commit SHA of the build you're interested in, and the second is the name of
# the builder. For example:
#
# ./src/etc/cpu-usage-over-time-plot.sh 7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c x86_64-gnu
#
# That will generate `$builder.png` in the current directory which you can open
# up to see a hopefully pretty graph.
#
# Improvements to this script are greatly appreciated!
if [[ $# != 2 ]]; then
echo "expected 2 arguments, received $#"
echo "example usage: './src/etc/cpu-usage-over-time-plot.sh \
7737e0b5c4103216d6fd8cf941b7ab9bdbaace7c \
x86_64-gnu'"
exit 1
fi
set -ex
bucket=rust-lang-ci2
commit=$1
builder=$2
curl -O https://$bucket.s3.amazonaws.com/rustc-builds/$commit/cpu-$builder.csv
gnuplot <<-EOF
reset
set timefmt '%Y-%m-%dT%H:%M:%S'
set xdata time
set ylabel "CPU Usage %"
set xlabel "Time"
set datafile sep ','
set term png size 3000,1000
set output "$builder-$commit-cpu-usage-plot.png"
set grid
f(x) = mean_y
fit f(x) 'cpu-$builder.csv' using 1:(100-\$2) via mean_y
set label 1 gprintf("Average = %g%%", mean_y) center font ",18"
set label 1 at graph 0.50, 0.25
set xtics rotate by 45 offset -2,-2.4 300
set ytics 10
set boxwidth 0.5
plot \\
mean_y with lines linetype 1 linecolor rgb "#ff0000" title "average", "cpu-$builder.csv" \\
using 1:(100-\$2) with points pointtype 7 pointsize 0.4 title "$builder", "" \\
using 1:(100-\$2) smooth bezier linewidth 3 title "bezier"
EOF
rm "cpu-$builder.csv"
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