reproduce.sh

#!/bin/sh

set -e

# how many times to repeat the string
lines=100000

# how many tests to run
samples=100

test="$PWD/bw-test.sh $lines"

echo "setting Xresources to defaults"
xrdb -load /dev/null

echo "disabling lock screen in all possible ways damnit"
gsettings set org.gnome.desktop.lockdown disable-lock-screen true
gsettings set org.gnome.desktop.screensaver lock-enabled false
gsettings set org.gnome.desktop.screensaver lock-delay 86400
xset -dpms
xset s off
xset dpms 0 0 0 && xset s noblank && xset s off

echo "starting test in 3 seconds, switch to a blank workspace"
sleep 3

echo "terminal,time,cpu,memory" >> times-${samples}x${lines}.csv

# gnome-terminal fails because it returns immediately. bad bad.
#
# also, we don't monitor disk I/O. turns out this could matter,
# because some emulators actually write the backlog to disk.
#
# this would need psutil to DTRT.

for terminal in konsole pterm terminator uxterm xfce4-terminal  ; do
    echo "priming $terminal"
    /usr/bin/time $terminal -e "$test" || continue
    for i in $(seq $samples); do
        /usr/bin/time $terminal -e "$test" 2>> $terminal-time.txt
    done
    sed -n "/elapsed/{s/^.* 0:\([0-9]*.[0-9]*\)elapsed \([0-9?]*\)%CPU .*avgdata \([0-9]*\)maxresident.*\$/$terminal,\1,\2,\3/;p}" < $terminal-time.txt >> times-${samples}x${lines}.csv
done

# misquoted
for terminal in alacritty mlterm st stterm urxvt; do
    echo "priming"
    /usr/bin/time $terminal -e $test $lines || continue
    for i in $(seq $samples); do
        /usr/bin/time $terminal -e $test $lines 2>> $terminal-time.txt
    done
    sed -n "/elapsed/{s/^.* 0:\([0-9]*.[0-9]*\)elapsed \([0-9?]*\)%CPU .*avgdata \([0-9]*\)maxresident.*\$/$terminal,\1,\2,\3/;p}" < $terminal-time.txt >> times-${samples}x${lines}.csv
done