lib25519-speed(1)

💅 lib25519-speed(1) — speed tests, but make it fashion ✨

okay so bestie, this is the whole vibe for lib25519-speed, and we’re gonna get you comfy with it. No cap. 🫶

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🎀 NAME 🎀

• lib25519-speed — run some lib25519 speed tests

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⚡ SYNOPSIS ⚡

lib25519-speed

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🌸 DESCRIPTION 🌸

lib25519-speed runs some tests of the speed of the lib25519 implementation of X25519 and Ed25519. Literally speed-checking the math, bestie. 🧚

💀 Important vibe check: the lib25519-speed output format is subject to change. Do not hard-code your whole personality to it, fr fr.

Examples of output lines with the current format, from a lib25519-speed run on an Intel Haswell CPU core, include the following:

nG_merged25519 selected implementation amd64-mxaa-opt compiler clang -Wall -fPIC -fwrapv -Qunused-arguments -O2 -mmmx -msse -msse2 -msse3 -mssse3 -msse4.1 -msse4.2 -mavx -mbmi -mbmi2 -mavx2 -mtune=haswell; Ubuntu clang version 14.0.0-1ubuntu1.1; Target: x86_64-pc-linux-gnu; Thread model: posix; InstalledDir: /usr/bin
nG_merged25519 selected 32 43276 +17556+272+38-60-200-13-109-24+139+118+3-24+39+37-86-221

These lines say that the automatically selected implementation for the nG_merged25519 subroutine was the amd64-mxaa-opt implementation compiled with the clang options shown, taking an interquartile mean (IQM) of 43276 CPU cycles. The numbers 43276 +17556+272+... show the timings for a series of consecutive operations: the IQM was 43276 cycles, the first run took 17556 cycles more than the IQM, the second run took 272 cycles more than the IQM, etc. 🌈

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👀 SEE ALSO 👀

• x25519(1)
• ed25519(1)
• lib25519(3)

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Signed, sealed, delivered by lib25519-speed(1) 💌 — that’s the footer, bestie; no extra source/version/date line was printed here, so we’re not inventing one. 🎀✨