schneems / heroku_ulimit_to_ram Goto Github PK

Running on Heroku? Want to know how much ram you've got? Well too bad, you can't. But...you can guess. The ulimit -u return value is different for different size dynos.

Ulimit is not a stable interface and may change. Yes, using this is pretty horrible, so don't.

If you do have to use this here's how. Run the script:

$ bin/heroku_ulimit_to_ram

If you're on heroku you'll get the memory limit in megabytes returned to the standard out

On a 1x dyno

$ bin/heroku_ulimit_to_ram
# => 512

On a 2x dyno

$ bin/heroku_ulimit_to_ram
# => 1024

On a PX dyno

$ bin/heroku_ulimit_to_ram
# => 8192

If you try to run this on any other system the process will exit with a status of 1

$ bin/heroku_ulimit_to_ram
# => nope

MIT or something. Seriously though, please don't use this.