Subsplit Laravel in parallel processes (example)

laravel_subsplit_measure.txt

# for my symfony-based test project (not for Laravel!) with 7 splitted packages in OSX:

time split-slower # without parallel execution
split-slower  66.71s user 127.59s system 71% cpu 4:30.62 total
time split-faster # with parallel execution
split-faster  99.21s user 148.89s system 236% cpu 1:44.83 total

laravel_subsplitter.sh

#!/usr/bin/env bash

# This utility uses linux "parallel"
# To install a fresh version, run:
# apt-get -y install bzip2 make && (wget -O - pi.dk/3 || curl pi.dk/3/ || fetch -o - http://pi.dk/3) | bash

git subsplit init git@github.com:laravel/framework.git

modules_array=(
    'src/Illuminate/Auth:git@github.com:illuminate/auth.git'
    'src/Illuminate/Bus:git@github.com:illuminate/broadcasting.git'
)

printf '%s\n' "${modules_array[@]}" | parallel echo "'git subsplit publish --heads=\"master 5.2 5.1\" ${1}'"
printf '%s\n' "${modules_array[@]}" | parallel "git subsplit publish --heads='master 5.2 5.1'"

rm -rf .subsplit/