[dilap]

I was curious so I downloaded Go 1.4, and tested against 1.9 on an old version of a project I have (backend for Mafia Watch), about 30K lines of Go, including a few 3rd party dependencies.

Go 1.4: Around 2.1s Go 1.9: Around 2.5s

So within 20% of 1.4, not bad. That's on an old MacBook Air, dual core 1.7 GHz i7, 8GB ram.

And of course the binary performance and GC pause times w/ 1.9 will be much better.

Here's the raw times: https://pastebin.com/ULDHPmVu

Two awesome things:

It was super-easy and fast to download and compile Go 1.4

It was completely painless to compile my old code with Go 1.9

I fucking love how nice it is to work with the Go ecosystem. <3