facebookincubator/below
A time traveling resource monitor for modern Linux systems observed · 2026-08-28
Health v2 · maintenance only
73/100
- Activity 99
- Release rhythm 25
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 104.5
- age_days: 2387
- days_rel: 343
- days_push: 7
- n_releases_24m: 3
Adoption not part of the score
2493 stars · 113 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
below is an interactive Rust-based system resource monitor for Linux that records historical system data and lets you view, replay, and dump it. It supports cgroup hierarchies, process stats, pressure stall information (PSI), and script-friendly output formats like JSON, CSV, and OpenMetrics.
Use cases
- monitor cpu memory and disk usage on linux
- replay historical system resource data after an incident
- view cgroup hierarchy and process stats
- record system metrics continuously with a daemon
- export system stats as json or csv for scripts
- check pressure stall information psi
- debug what caused a past performance spike
When to choose
- you need historical 'time traveling' system data, not just a live snapshot
- you run modern Linux with cgroup2 and want cgroup-aware monitoring
- you want scriptable dumps in JSON, CSV, or OpenMetrics
- you prefer a lightweight single-binary Rust tool over atop or htop
When to avoid
- you still rely on cgroup v1, which below does not support
- you need a cross-platform monitor for macOS or Windows
- you need alerting or dashboards rather than interactive inspection
- you need network-level or application-level monitoring rather than system resources
Facets
cli-tool · maturity active
monitoring cli terminal-ui logging analytics monitoring operating-systems performance cli rust system-monitor cgroups psi resource-monitoring time-series replay atop-alternative devops command-line linux docker
2 sources
- readme: https://github.com/facebookincubator/below · fetched 2026-08-28 · 854c4ae03b2c
- registry_crates: https://crates.io/api/v1/crates/below · fetched 2026-08-29 · e38a400c08cc
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| facebookincubator/below | main | 73 |
For agents
markdown · JSON · MCP: product_card(name="facebookincubator/below")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem