https://sankethbk.github.io/blog/tags/linux/Recent content in Linux on Sanketh's BlogHugo -- 0.167.0en-usSat, 03 Oct 2026 00:00:00 +0000https://sankethbk.github.io/blog/posts/performance-engineering/2026-10-03-starting-map/Sat, 03 Oct 2026 00:00:00 +0000https://sankethbk.github.io/blog/posts/performance-engineering/2026-10-03-starting-map/<h1 id="performance-engineering-a-practical-starting-map">Performance Engineering: A Practical Starting Map</h1> <p>This is the first note in a performance-engineering sequence. It is not a summary of an SRE handbook, a cloud-observability guide, or a treatise on dashboard design. The goal is practical skill at the level of a single machine: understand why a program is slow, decide what to change, and verify that the change worked.</p> <p>The contexts that matter here are things like a chess engine, the microbenchmark problems on HFT University, a hot loop in the Linux kernel, or any single-node program where you own the source and the hardware. The operating system is the boundary we press against; the hardware is the ground truth.</p>