[nomilk]

Going to try this right now! Will report back.

OOC, why isn't this part a ruby default? Isn't it always better to be more memory efficient. (I'm trying to understand what the trade offs are, if any)

EDIT: well, exactly 6 minutes later, I'm done. I followed these instructions: https://elements.heroku.com/buildpacks/gaffneyc/heroku-build...

The app seems to work like usual, I'll just have to wait and see what happens to memory use.

I will reply here in 12 hours with a screen shot showing the results (before/after memory use), whatever they may be.

Also, for reference, here's the metrics for the past 24 hours (LOTS of memory problems): https://imgur.com/a/M8IHd5z

[nomilk]

For anyone interested, here's the result: https://imgur.com/a/c62gjKQ (the red vertical line is the point from which jemalloc was used).

It looks like memory usage did indeed go down, and critical errors fell by about 84%.

[nomilk]

For completeness, here are the metrics a full 24 hours after the change: https://imgur.com/a/lbdzFvN

[bmulholland]

Yeah, I had the same reaction last week. It's not a Ruby default because some versions of Linux can't use it. ¯\_(ツ)_/¯