Meetups/Infra/2026-02-16

stats, weibull failure rates, SIGBOVIK game theory of naming, coz - the causal profiler, vm in k8s, proxmox + k8s + docker, demos - gpus in the 'bridge, tailscale, kissing robots

Join Zulip!

planned topics

stats
weibull failure rates, poisson (indep) arrival rates
systems we love / papers we love
implementation day!

Introductions

• [name] - [background]. [goals for meetup, or interests to explore]

go for it, tyty

• Loren - background in hosting the meetup, scraping defender. Talk: about SIG BOVIK paper
• Ciara - To talk about kubernetes, came for earlier event
• Dan - Likes computers, likes this meetup.
• Alex - curious about papers, what poeple use to find good papers, reliable novelty sources
• Zaccae - Here
• Josh - Was before the meetup
• Derek - programmer, working on specifications, getting them from software. Have some NB locker infra figured out
• Chris - new to nosiebridge, like to tinker, and listen
• Chris - design engineer, playing around with codex to build MVP.
• Keran - Likes the meetup
• Elan - recently a ground swell of post mortems, in general into self hosting
• Daniel - web dev, likes signage and working on it for noisebridge.
• Mister Name - Likes to learn, sometimes helps, likes to come to this meets
• Erikk - short demo if the gods allow, next with Intel IME + BMCs
• Renaud - Late, interest in learning more about infra, interested in setting up home lab.
• Robert -
• Ethan - In the process of moving from Seattle.
• Jet - lost in the rain and dark, robot kissing booth over the internet.
• Peter - was doing a lot of devops in london for years,

- moved here in hopes to do the same - autoschematic

Lesson or Demo

• newsletter - sources of novelty

hn, reddit
arxiv sanity

• NB demos

elan: harbor.noise / harbor.colossus.noisebridge.net
elan / from jordan / library wg:   library.noise / library.colossus.noisebridge.net

daniel:  add on donate.noisebridge.net.    watchdog for auto-recovery.

extra inspiration: http://listen.hatnote.com/  /  https://www.bitlisten.com/

erik: vision description app. Phone interface, 4 models running, 
 runs on multiple gpus together

- Dan: There could be some misinterpretation?? - Erikk: The description model is the main effort, and seems to be working well. - weakest model doesn't do well - most recent 3B param model works really well, release in jan 2026 - the 32B model is fantastic, it will describe scenes and also writing within the scene. - self hosted.

• stats

HD stats, practial application  https://ir.backblaze.com/news/news-details/2026/Backblaze-Publishes-2025-Drive-Stats-Report-13-Years-of-Data-Show-a-Growing-Healthier-Drive-Fleet/default.aspx

https://url.t0.vc/UITT -- jupyter notebook. 
 uvx --with numpy jupyter notebook  ./infrastructure_statistics_and_naming_systems.ipynb
 uvx --with numpy,matplotlib --from jupyterlab jupyter lab ~/Downloads/infrastructure_statistics_and_naming_systems.ipynb
 # will complain, but work

- jupyter notebooks, stats and infra - backblaze - mean time to failure - Little's law is a simple observation about systems - Concurrency = Throughput * Latency - In process 1, and process 2. - System can handle a load - for instance, start by modelling 20 request per second - arrival rates at 20 r/s with poisson, littles law informs about queue depth - As request load approaches capacity queue depths approaches infinity - need headroom to consider the queue depth - when system is falling over - how many resources to provision - If disk is low with ram cache - have a bunch of workers that operate concurrently to fetch from disk - prof Emory Burger - note when the subunits of ends of units of work - inserting random delays to infer dependencies between units of work - testing the through put? - no, how much effect this particular thing has on the whole? - coz: Emergy Berger, - Causal Profiler https://github.com/plasma-umass/coz?tab=readme-ov-file - stats from google - 100 req for google search results page - latency? - when someone loads 100 requests, they'll see it - 1 in 1000 requests, birthday paradox - wikipedia chimes per edit

- Backblaze - Doug: - Weibull is parameterized - Types of Weibull curves - k is typical of things that wear out - as k is lowered, the mode is moved left - infant mortality curve - used for data center failures - generalizable curves applicable to items - interesting distribution, paramaterizable like poisson - found in the retail world, useful distribution - Drives grouped into pods

  https://www.backblaze.com/blog/backblaze-drive-stats-for-2025/

- Groups of RAID5 or RAID6? - Enough drives to see how they are correlated - Recently switched from using consumer drives enterprise for cost ratio - Proved that buying non-consumer drives is worth it - AFR? Average Failure Rate - Elan: As you buy larger and larger drives? - 10TB vs 16TB, - Don't need so many racks - Drive stats vs. Server stats - Risk/TB - Back plane often dies - preferred because no data loss - hardware are not pets - Internet Archive - Petabyte cabinet has stats too - Jet got a VPS, where tho? - Monkey Brains for rpis? -

Internet Archive Infrastructure -- Jonah Edwards - https://www.youtube.com/watch?v=neBeDgICOeA - Getting fiber there. - Richmond has lots of air quality issues.

Mean failure rates, and archive not having backups. 

An Abundance of Katherines: The Game Theory of Baby Naming https://arxiv.org/abs/2404.00732

Late intros

• Jet - NB'er, wet, upset about it, biking the rain 30m to get here, got lost 10m in. Was working on Valentine's day robotics project, 2 WebRTC web cams, tailscale to proxy out to a caddy vps out in Fremond (linode mentioned previous). Latency: phone to robot moving is 100ms. ... Like to make drones.

song computer love

• Ethan - in the process of moving here from Seattle, started a company there, starting a new company here, looking to become a member
• Peter - was doing infra/devops consultancy in London, hoping to do that here. Also working on terraform infra project OpenSchematic (see also OpenTofu)
• Pranath (?) - often late though I don't mean to, excited to learn, setting up a home lab

Outros

'

• Peter - computer love
• Loren -

sigbovik, game theory of 

• Ciara - love slideshow things, want more. love math, extrapolate, here's why. talking real world events. great bootstrap.
• Jet - still drying off, viet new year in LA this year. Give a presentation on how built robot: nix os + tailscale
• Dan - liked the research paper, more research, more deep dives, -- coz
• Ethan - teaching new topics great, jet's robot
• Peter - easy to please, weibull dist, jet's robot
• Alex - coz (the causal profiler)
• Zaccae - post mortems are always fun
• Josh - NB prior art with kissing robots, made at noisebridge, someone to invite
• Derek - would like to see a tailscale demo! jupyterlite (wasm, in browser)

- https://jupyter.org/try-jupyter/lab/

• Chris - Escaped before the bell!
• Chris - internal links to noisebridge resources, more demos tho, e.g. tailscale!
• Karan - cool to see the minor discussion about computer parts industry, Thailand. self hosting demos? (long-run entanglements)
• Robert - Discussion of microcontrollers, interested in trying out multiple microcontrollers linking them to do a process faster.
• Mister Name - Intreresting youtube channel Jeff Geerling using small boards for distributed homelab stuff.
• Elan - Running VMs in kubernetes, Proxmox + Kubernetes + Docker service, (to inifnty and beyond!) Will benchmark
• Daniel - still Daniel, Liked Erik's demo the same, needs to bring the GPUs into nb.
• Renaud - liked Erik's demo, and confetti donation page
• Erikk - more demos

• Read aloud: clarify for meetup. We are taking notes in a riseup pad (or I am--help appreciated, and links). We have meeting notes posted to the wiki. noisebridge.net, search Infra, or Meetups/Infra. (the Infrastructure page has a disambiguation link.)
• Shell, web services, self-hosting, networking!

Questions, Discussion, or Coworking

• [Issue]

For next time

Readings & Exercises

• Readings
• Exercises

Join online

• Try it yourself!
  • Join libera.chat #nb-meetup-infra

https://www.noisebridge.net/wiki/Meetups/Infra