For years, people have been using jemalloc with ruby. There are various benchmarks and discussions. Legend had it that Jemalloc 5 doesn't work as well as Jemalloc 3.
Then, one day, hope appeared on the horizon. Someone offered a config for Jemalloc 5.
The recipe would be something like this (shown with official docker ruby image).
FROM ruby:3.1.2-bullseye
A while ago I did some rage tweeting about job ads. Here is a list of helpful things people sent me to read then and since:
From a (mostly) Ruby on Rails developer.
After doing the below everything seems to work (some of it worked before doing anything), including Ruby, Gems, RVM, Homebrew, VirtualBox/Vagrant VMs, Pow, tmux, git, vim.
/usr/local to avoid super slow install, per option 1 in https://jimlindley.com/blog/yosemite-upgrade-homebrew-tips/: sudo mv /usr/local ~/local/usr/local, per option 1 in https://jimlindley.com/blog/yosemite-upgrade-homebrew-tips/: sudo mv ~/local /usr