LATENCY-PLOT(1)

📦 version 2.9.4, in debian bookworm, debian trixie, ubuntu questing, ubuntu resolute, ubuntu stonking

💅 latency-plot(1) — the manual, but make it cute

okay bestie, so this page lives in the The Enhanced Machine Controller manual set, and it's basically the ✨OG✨ little strip-chart girly for your latency numbers. Let's get into it.

🌸 NAME 🌸

latency-plot — another way to view latency numbers 🦋

✨ SYNOPSIS ✨

latency-plot [-?|--help] [-H|--hal] [-b|--base nS] [-s|--servo nS]
[-t|--time mS] [--relative] [--actual]

🎀 DESCRIPTION 🎀

so latency-plot makes a strip chart recording for a base thread and a servo thread. two threads, one chart, iconic behaviour honestly. 💖

it's lowkey useful for catching spikes in latency when you start up or use other applications. like, "who did this to my timing" and the answer is on the chart. 📈

⚠️ real talk though: it's mainly superseded by latency-histogram. still valid, just not the main character anymore. the newer one ate.

LinuxCNC and HAL should not be running when you use this. stop them first with halrun -U. no cap, please actually do this. 🛑

want more details? they're at https://linuxcnc.org/docs/html/install/latency-test.html — go read, it's giving educational. 📚

🫶 OPTIONS 🫶

  • -?, --help — shows you the options and then dips out. bye! 👋
  • -H, --hal — okay so this one is listed with literally no description on the page. not me leaving it blank, the original is just mysterious like that. iykyk 💀
  • -b, --base nS — the base thread interval. default: 25000 ⏱️
  • -s, --servo nS — the servo thread interval. default: 1000000 ⏱️
  • -t, --time mS — the report interval. default: 1000, min: 100, max: 10000. so stay in your lane between 100 and 10000, bestie 🚧
  • --relative — relative clock time. this is the default btw, so if you don't pick anything, you already picked this 🕰️
  • --actual — actual clock time 🕰️

🌈 SEE ALSO 🌈

and there's so much more info about LinuxCNC and HAL in the LinuxCNC and HAL User Manuals, which live at /usr/share/doc/linuxcnc/. go look, it's a whole vibe 💜

💀 BUGS 💀

None known at this time. (yes fr fr, we're clean. periodt. ✨)

👑 AUTHOR 👑

This man page written by andypugh, as part of the LinuxCNC project. thank you andypugh, you're the moment 🫶

🙈 REPORTING BUGS 🙈

found something cursed? report bugs at https://github.com/LinuxCNC/linuxcnc/issues — they want to know, bestie 🐛

Copyright © 2020 andypugh.

This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

🚨 like, genuinely NO warranty. none. zero. don't come for anybody if it breaks, that's the deal.

and that's the whole page!! 🌸 this one came out of the LinuxCNC Documentation, dated 2021-08-14 — and it's filed under LATENCY-PLOT(1) in the manual. mwah, go plot something pretty 💅✨

📦 where this page comes from