CXL-MONITOR(1)

💅 CXL-MONITOR(1) — the cxl manual, bestie edition 🎀

ok so you found the cxl-monitor page, iconic. it lives in the cxl manual and honestly it's giving "quiet little tool that does exactly one thing and does it slay."

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✨ NAME ✨

cxl-monitor — monitor the CXL trace events 👀

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🌸 SYNOPSIS 🌸

cxl monitor [<options>]

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🦋 DESCRIPTION 🦋

so cxl-monitor is literally the tool for monitoring the CXL trace events that the kernel emits 💖 it takes those events, converts them into json objects, and dumps the json-format notifications out to standard output or to a logfile. no cap, that's the whole gig. lowkey elegant.

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🍓 EXAMPLES 🍓

run a monitor as a daemon to monitor events and output to a log file:

cxl monitor --daemon --log=/var/log/cxl-monitor.log

run a monitor as a one-shot command and output the notifications to stdio:

cxl monitor

run a monitor daemon as a system service:

systemctl start cxl-monitor.service

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💅 OPTIONS 💅

• -l, --log= — send log messages to the specified destination. your choices, bestie:
  • "<file>": send log messages to the specified <file>.
  • "standard": send messages to standard output.

⚠️ heads up: the default log destination is /var/log/cxl-monitor.log if --daemon is specified, otherwise it's standard. and fr fr note that standard and a relative path for <file> will not work if --daemon is specified. like, they just won't. 😭

• --daemon — run a monitor as a daemon. main character energy, off in the background.
• -v, --verbose — emit more debug messages. more words, more lore 🔥
• -u, --human — by default the command outputs machine-friendly raw-integer data. instead, with this flag, numbers representing storage size get formatted as human readable strings with units, and other fields get converted to hexadecimal strings. cute and readable, we love that for you 🫶

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👑 COPYRIGHT 👑

Copyright © 2016 - 2022, Intel Corporation. License GPLv2: GNU GPL version 2 http://gnu.org/licenses/gpl.html. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

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🌈 SEE ALSO 🌈

• cxl-list(1)

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and that's the whole page, periodt 💜 cute little sign-off time: this was cxl documentation, dated 2026-06-30 — go forth and monitor those trace events, bestie 🧚✨