facebookincubator/oomd

Health v2 · maintenance only

Adoption not part of the score

2045 stars · 163 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

oomd is a userspace out-of-memory (OOM) killer for Linux systems that leverages PSI and cgroupv2 to monitor memory pressure holistically. It takes corrective action, such as killing offending processes, before a kernel-space OOM occurs, with flexible per-workload policy via a plugin system.

Use cases

• prevent linux hosts from locking up under memory pressure
• kill processes before the kernel OOM killer triggers
• configure custom memory protection rules per workload
• monitor memory pressure using PSI and cgroupv2
• replace kernel OOM handling with userspace policy

When to choose

• you run memory-overcommitted Linux servers and suffer long lockups from kernel OOM handling
• you need flexible, per-workload OOM policies in userspace
• your kernel is 4.20+ with PSI and cgroupv2 available

When to avoid

• you run kernels older than 4.20 without PSI support
• you need an OOM solution for non-Linux platforms
• you want a zero-configuration daemon without policy tuning

Facets

application · maturity stable

monitoring plugin-system operating-systems monitoring performance cli self-hosted oom-killer psi cgroupv2 memory-management system-daemon linux

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