[yutghgh]

This "rails/ruby is slow" myth really needs to die. Sure, rails is too slow for certain very large companies at very large scales, and if you're in this position you already know it. However, rails is fast enough for 99.5% of usecases, gitlab included.

As to memory usage, I will concede it is often somewhat high with rails, but there are solutions, such as jemalloc that have helped me in the past.

[KaoruAoiShiho]

Gitlab most certainly not included! Its perf is awful in comparison to any modern stack (including some php ones unfortunately).

[yutghgh]

I didn't say GitLab was fast (I haven't used it enough to know), but blaming its problems on ruby/rails when GitHub (which is pretty fast imo) is also written on rails is misleading at best.

[chinhodado]

Ruby/rails is not the only factor, but it is certainly one of the contributing factors, and it is a big one. There's no need to deny that.