https://sankethbk.github.io/blog/tags/false-sharing/Recent content in False-Sharing on Sanketh's BlogHugo -- 0.169.0en-usSat, 17 Oct 2026 00:00:00 +0000https://sankethbk.github.io/blog/posts/performance-engineering/labs/2026-10-17-lab-2-memory-and-caches/Sat, 17 Oct 2026 00:00:00 +0000https://sankethbk.github.io/blog/posts/performance-engineering/labs/2026-10-17-lab-2-memory-and-caches/<h1 id="lab-2-memory-hierarchy-and-caches">Lab 2: Memory Hierarchy and Caches</h1> <p>This is the hands-on report for the lab in <code>/home/sanketh/mem-lab</code> on the Linux x86 laptop. It is the practical companion to <code>content/posts/performance-engineering/2026-10-11-memory-and-caches.markdown</code> — every experiment measures something the theory note claims, and a few go past it.</p> <blockquote> <p>Same machine caveat as Lab 1: this is an <strong>Intel Core i5-8250U</strong> (15 W mobile part, base 1.6 GHz, max 3.4 GHz). It throttles under sustained load, so chase <em>ratios</em>, not absolute nanoseconds. All single-threaded timings below are pinned to one core with <code>taskset -c 2</code>.</p> </blockquote>