pipi-bench

A small set of scripts to see parallel execution of processes

Usage

Prepare

$ sudo apt install pi time

Measure

$ ./bin/pipipi.sh 16 | tee measure.dat

The pipipi.sh runs pipi.sh with different parallelism up to specified with the command line argument (16 for this example). The script pipi.sh runs sequences of pi commands in parallel.

Check result

$ gnuplot
reset
set xlabel "Numbe of parallel processes"
set ylabel "Elapsed time for same amount of work (sec)"
set style data linespoints
set xrange [0:*]
set yrange [0:*]
plot "measure.dat"

On Heroku

Create an app

Aptfile lists vim.tiny to be installed so that the scripts can be edited on the fly on one-off dynos if needed.

$ heroku create
$ heroku buildpacks:add https://github.com/heroku/heroku-buildpack-apt
$ git push heroku master

Measure

$ heroku run ./bin/pipipi.sh 16 2>&1 | tee measure.dat
$ sed -i 's/^Running/# Running/' measure.dat

To test different dyno sizes, the app needs to use professional dynos:

$ heroku ps:type worker=standard-1x
$ heroku run --size=standard-2x ./bin/pipipi.sh 16 2>&1 | tee standard-2x.dat
$ sed -i 's/^\([^0-9#]\)/#\1/' standard-2x.dat

License

MIT