Show a live chart of your process's memory usage.
To use stripchart in an existing application, add it to your Gemfile
gem 'stripchart'
To use stripchart standalone, install it.
gem install stripchart
Start it up like this:
$ while true; do sleep 0.5 ; echo n $RANDOM; done | stripchart
To view the chart, open http://localhost:9999/