LIKWID-MEMSWEEPER(1)

💖 LIKWID-MEMSWEEPER(1) 💖

okay bestie, so this is a General Commands Manual page, and today's main character is likwid-memsweeper 💅

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✨ NAME ✨

likwid-memsweeper — a tool to clean up NUMA memory domains and last level caches. yes, it does spring cleaning for your hardware, no cap 🧹🌸

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🦋 SYNOPSIS 🦋

likwid-memsweeper [-hv] [-c <node_list>]

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🌈 DESCRIPTION 🌈

so like, likwid-memsweeper is a command line application that shrinks the file buffer cache by filling the NUMA domain with random pages. literally just dumping random pages in there so the cache has nowhere to hide 🙈

and that's not even all of it — the tool also invalidates all cachelines in the LLC. the way it just wipes the last level cache clean?? iconic behavior, honestly 👑

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🎀 OPTIONS 🎀

• -h, --help — prints a help message to standard output, then exits. your lil "what does this do again" bestie 🫶
• -v, --version — prints a version message to standard output, then exits. vibe check on the version ✨
• -c <node_list> — set the NUMA domain for sweeping. tell it which node you want swept, and it goes to work 💫

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👑 AUTHOR 👑

Written by Thomas Gruber <thomas.roehl@googlemail.com>. shoutout to the legend fr fr 💜

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💀 BUGS 💀

Report Bugs on <https://github.com/RRZE-HPC/likwid/issues>. if something's acting up, tell the devs, not me 😭

ngl if you found a bug, that's a whole mood. go drop it in the issue tracker bestie.

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🌸 SEE ALSO 🌸

• likwid-perfctr(1)
• likwid-features(1)
• likwid-pin(1)
• likwid-powermeter(1)

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and that's the whole page, bestie!! 🎀 this one comes from likwid-5, dated 23.12.2025 — so go forth, sweep those NUMA domains, and stay slay 💖✨🦋