Digital Ocean and Dokku plus Play had to use 2gb RAM Machine

Question

So i recently installed a play application using Dokku on Digital Ocean following the tutorial provided. The only issue was i kept getting an error when pushing to the server saying i didnt have enough memory to compile the app. I ended up having to upgrade to the 20/mo 2GB machine for it to finally work. The tutorial says you can use the smallest droplet. When i check my memory usage on the droplet im using about 1.2 GB but java is only using 8% of total. Where is my memory going? Is play taking all the memory? How can i use the smaller droplet and play still?

Answer 1

As Gunhan said in comment initially you should add swap space like described here. If problem persists run this command

echo 1 >  /proc/sys/vm/overcommit_memory

in terminal and to restart your vm to be sure. For detailed information about this command please read here.