[karl_p]

The JVM can relocate memory to avoid fragmentation. Rust can't, at least natively. Are they not worried about this regression?

[geodel]

Well Java need it because it fragments memory a lot. With Rust one has value types and stack allocation which takes care of one of the biggest cause of fragmentation.

[kikimora]

Writing code that would not fragment memory over time is arguable much harder than writing GC friendly code.

[tigy32]

I haven't found that to be the case in my experience: just for example in java you tend to end up with essentially a lot of `Vec<Box<Thing>>` which causes a lot of fragmentation. In rust you tend to end up with `Vec<Thing>` where `Thing`s are inlined. (And replace Vec with the stack for the common case). I find it more like Java is better at solving a problem it created by making everything an object.

[geodel]

Yeah, cooking food in kitchen is much harder than having it delivered from restaurant at doorstep.

Reasonable people will see if cost makes it worthwhile.

[mrkeen]

With 10x the throughput (TPS) and the lack of GC pauses (which were the cause of the rewrite), how would they measure such a regression, let alone worry about it?