R14 Memory Issue on Heroku

[CPloscaru]

Hello !

I tried to deploy my app on Heroku but I get R14 memory issue at some point.

The memory increase until I crash the system!

In development memory never exceed around 200mb.
In production I use falcon.rb provided in the documentation. I can't figure out why the memory increase until it crashes

[CPloscaru]

I look a bit into the Falcon documentation and saw I had to specify "count ENV.fetch("WEB_CONCURRENCY", 2).to_i" especially for heroku.
I missed the information just looking at the falcon-rails documentation.
Still need to wait 24h to make sure it was the issue but so far it's running smoothly.

[trevorturk]

Yes, I ran into the same. I believe the recommendation is to have one Falcon instance per vCPU. I wonder if defaulting to 1 to avoid issues would make sense, but it could lead to people not taking advantage of their hardware.

[CPloscaru]

Just to confirmed it solved my issue!