https://peripragmaton.com/tags/performance/Recent content in Performance on PeriPragmatonHugoen© 2026 PeriPragmatonSun, 25 Oct 2026 09:00:00 +0000https://peripragmaton.com/posts/pgo/Sun, 25 Oct 2026 09:00:00 +0000https://peripragmaton.com/posts/pgo/What the compiler has to guess about your program, and what changes when it doesn’t have to. Profile-guided optimization on a toy interpreter and on SQLite.https://peripragmaton.com/posts/icache-pressure/Sat, 17 Oct 2026 20:54:24 +0000https://peripragmaton.com/posts/icache-pressure/What happens when a hot loop runs through more code than the instruction cache can hold, and why batching work is a design decision the compiler won’t make for you.https://peripragmaton.com/posts/cache-aliasing/Sun, 11 Oct 2026 19:43:59 +0000https://peripragmaton.com/posts/cache-aliasing/Summing a power-of-two-sized matrix column by column is eight times slower than the same loop with one extra element per row. Why cache sets make some addresses collide, and how to spot it.