JITs are un-ergonomic

I mean the world has worse problems, but lockdown for me = thinking back on 2 hard years of high-performance (cough) server-side JS, and my relationship with javascript as a tool. Performance work in 2020 can be as much about caching and smart RPC design as about straight-line performance of a function. But straight-line performance still matters. And the ergonomics of measuring how a piece of str

[tmatsuu]

JITの功罪。同じ処理を繰り返すようなベンチマークの性能は良くても実環境で正しくパフォーマンスを計測するのは難しい。ただしJITは悪ではなく「もっとより良くできるはず」