csperf Diff: Comparing Two Runs Without Spreadsheet Chaos
Why this lesson exists In Slack threads you’ll often see two people paste a mean execution time and immediately start a debate. One says “my run is…
Testing & QA
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Noise Sources: Affinity, Frequency, and Background Load — How to isolate and quantify non‑compiler variance with csperf
Why this lesson exists Unexplained variance in a csperf run often gets blamed on the compiler, when in fact the machine is the culprit. This episode…