To avoid the two memory reads on every access, the 386 includes a 32-entry Translation Lookaside Buffer (TLB) organized as 8 sets with 4 ways each. Each entry stores the virtual-to-physical mapping along with the combined PDE+PTE permission bits.
Now, to be fair, Node.js really has not yet put significant effort into fully optimizing the performance of its Web streams implementation. There's likely significant room for improvement in Node.js' performance results through a bit of applied effort to optimize the hot paths there. That said, running these benchmarks in Deno and Bun also show a significant performance improvement with this alternative iterator based approach than in either of their Web streams implementations as well.
，这一点在Line官方版本下载中也有详细论述
Express(absent)
Nov 25, 2025: Google initially determined this behavior was intended. We pushed back.