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Allocation heavy C++ can be pretty slow. It's also true unoptimizable (pure) virtual methods performing little work have quite a bit overhead that JVM can avoid

Allocation heavy C++ can be pretty slow. It's also true unoptimizable (pure) virtual methods performing little work have quite a bit overhead that JVM can avoid. Of course you normally try to avoid writing C++ like that.

pkolaczk 6y ago
Allocation heavy Java is also very slow. But it is much easier to avoid heap allocations (and virtual calls!) in C++/Rust than in Java.
- pjmlp 6y ago
  For the time being, I still hope that Valhalla will eventually make it.