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📜 SIDE QUEST · DEEP DIVE · ◆◆ · ~10 min

Reading a Profiler

Deep Dive · Reading a Profiler

"The hot line is almost never the one you would have guessed, and Amdahl's law says what optimising it can possibly buy you."

sampling vs instrumenting profilersflat vs cumulative timeAmdahl's lawmeasuring before optimising
🚀 You're jumping ahead. This builds on Worst, Average and Amortised — but play it now and you'll still earn full XP. If it feels steep, those make a gentler on-ramp.

A short lesson, then a quiz. ❤️×3 — a wrong answer costs a heart; finish with at least one left and the level is yours. Lose all three and you'll have to try again. Replay any time — XP and cleared levels are never lost.