I respectfully disagree. The technique has its place, and I use it once in a while, but whether it makes a positive difference for performance is highly sensitive to a number of factors.
replyFor example, bump style allocators allocate very quickly, but at the cost of higher memory usage and therefore sometimes worse cache locality.
The only way to know is to actually measure.
You disagree with a point I never made. My point is that they enable easier memory management, regardless of whether they're more performant. I really don't understand how that point didn't get across. You must simply not have read what you responded to.
replyYou said
reply> I think it should be preferred wherever it's an option for that reason most of all.
And that’s far too broad in my opinion.
Sure, if you’re writing in a language that makes memory management difficult, like C or Zig, that might be worth it, but arena allocators apply to many other languages too.