[lennelpennel]

I know you did not mean to say that scala code is non-performent. Well written jvm is highly performant and with GC algos like concurrent mark and sweep or garbage first and a good allocation of eden, tenured (etc) space you should really never have a stop the world because of GC'ing anymore.

[chillacy]

While it's true you should never stop the world for CMS in a server-side program where you can control memory tuning, newgen collection is still stop-the-world, and can cause multi-millisecond pauses on ~8GB heaps.