https://blog.c21-mac.com/Recent content on C21 BlogHugoen-usMon, 30 Mar 2026 00:00:01 +0530https://blog.c21-mac.com/posts/spsc/Mon, 30 Mar 2026 00:00:01 +0530https://blog.c21-mac.com/posts/spsc/<p>Yet another SPSC blog! The goal isn&rsquo;t just to explain a final solution, such as the <strong>lock-free, index-cached implementation</strong> some of you might already know. Instead, I want to walk through the iterative process: testing different approaches, analyzing the results, and determining how to squeeze out performance.</p> <p>By walking through the analysis, I hope this process provides a template for tackling similar performance challenges in the future.</p> <p>The optimization discussions are focused on the <strong>x86 architecture</strong>. All measurements were taken on an <strong>AMD Ryzen 7 6800HS</strong> using <strong>gcc 13.3.0</strong>. This CPU has a single <strong>CCX (Core Complex)</strong>, and the benchmarks use cores 0 and 2 - two distinct physical cores, rather than hyperthreaded siblings.</p>