Volume 6: Performance Optimization
Performance is the one area in C++ engineering where it's easiest to be confidently wrong — microarchitecture complexity runs far ahead of human intuition. The spine of this volume is a single chain: correctness first (the correctness foundation) → measure first (the benchmark methodology anchor) → attribute and optimize by bottleneck site (the four TMA buckets) → land on the performance cost of C++ abstractions. Every topic walks the loop "cut in with C++ code → drop down to the hardware or methodology → come back to how to change the C++".
One thesis runs through the whole volume: efficiency (algorithmic complexity) ≠ performance (real behavior on hardware). Don't stare at big-O — watch how the data actually flows on the hardware.
Status: the rewritten eight-chapter CN volume is now translated in full (ch00–ch07). The legacy single-file articles (02-inline / 06-evaluating / avx) have been removed; the sanitizer articles (10/11/12) have been relocated into ch00 as 03/04/05 in both CN and EN.