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How a Single Line of Code Made a 24-core Server Slower Than a Laptop | Piotr Kołaczkowski
https://pkolaczk.github.io/server-slower-than-a-laptop/
atomic でも contension があれば重い、まあ確かにそれはそうだよなぁ……
pkolaczk.github.ioHow a Single Line of Code Made a 24-core Server Slower Than a Laptop | Piotr KołaczkowskiImagine you wrote a program for a pleasingly parallel problem, where each thread does its own independent piece of work, and the threads don’t need to coordi...