If you are one of the three people in the world that can do it. ;-)
Re:Debunking the Java Performance Myth
by fauigerzigerk on Sunday October 22, 2017 @01:07PM
(#15527761)
Just use an arena allocator (or similar) where appropriate. It's not difficult and it's how C, C++ and Rust win all micro benchmarks that involve memory allocation: http://benchmarksgame.alioth.debian.org/u64q/binarytrees.htm...
C++ can always win!
JVM has hotspot? use profile guided optmization in C!
There is no escape!