Linnix: eBPF-Powered Linux Observability Tool for Detecting Performance Stalls and SLO Violations
By
parth21shah
Hot, fresh, and worth queueing round the block for.
Summary
Linnix is an open-source Linux observability tool that uses eBPF and PSI (Pressure Stall Information) to identify which processes are actually causing performance stalls and SLO violations, not just which ones are using CPU. It focuses on measuring contention and stall time rather than simple resource usage, helping pinpoint the root cause of latency issues in systems like payment services. The tool performs all analysis locally for security and privacy, with optional Slack notifications, and is AGPL-3.0 licensed.
Key quotes
· 4 pulledFind which process is hurting your SLOs — not just who's using CPU, but who's causing stalls.
Linnix uses eBPF + PSI (Pressure Stall Information) to answer this. PSI measures actual stall time — not usage, but contention.
A pod using 40% CPU with 60% PSI is worse than one using 100% CPU with 5% PSI.
Key Promise: All analysis happens locally. No data leaves your infrastructure unless you explicitly configure Slack notifications
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