Every pipe round-trip crosses the user/kernel boundary four times. Each crossing costs a minimum of 101 ns on modern hardware. Shared memory crosses it zero times. A forensic breakdown of what the kernel actually charges per message, and why Tachyon reaches 56.5 ns where pipes cost 6.2 µs.
Counting instructions is not measuring execution time. A deep dive into how Read-After-Write hazards serialize the Out-of-Order engine, and how restructuring dependencies unlocks the superscalar machine.
You removed the mutex. The CPU added a hardware lock. A deep dive into how the MESI protocol and false sharing silently destroy multi-core scaling.
Algorithmic complexity assumes memory is flat and fast. It isn’t. A deep dive into why contiguous arrays destroy linked lists on modern superscalar CPUs.
Why your Clean Code is poison for the CPU pipeline. Analyzing branch misprediction costs.