This isn't about SSD speed. Reading large file is comparable, but there is a very large overhead on the initial file access because of sandboxing. Opening (or

This isn't about SSD speed. Reading large file is comparable, but there is a very large overhead on the initial file access because of sandboxing. Opening (or deleting) an empty file is about 2.5x slower on OSX than on a Linux running in VirtualBox on that same Mac: https://discuss.rubyonrails.org/t/why-is-rails-boot-so-slow-on-macos/74021/19 https://discuss.rubyonrails.org/t/why-is-rails-boot-so-slow-...