You even included in the quote: It’s important to warm-up the code is so you don’t measure a mixture of performance characteristics between interpreted JS and compiled jS. How long the warmup takes is _incredibly_ device dependent, so instead I measured Ignition and SparkPlug independently so you get a feel for the speedup. I did not discard that at all in the comparison.
* It's not in the later ones
* You present TurboFan performance as the speed of JavaScript. e.g. your tables present JavaScript with Ignition as ~40x slower than JavaScript in certain test runs.
kodablah's point is a valid one generally. A parallel post notes that a developer can't avoid the warm-up time, but they can by using WASM.
As an aside, does v8 cache the optimized native code to any degree? I know there is code caching in the major browsers to presumably avoid reparsing Javascript, but if I had a theoretical page with say an image blur function, would each visit/load go through the same analysis/optimization process, going from slow to fast?