Latest / Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Use Linux BPF for Real-Time Performance Tracing
Episode 51 of Linux Server Admin with Fexingo dives into BPF (Berkeley Packet Filter) as a practical tool for real-time performance tracing on Linux servers. Hosts Lucas and Luna walk through a concrete scenario: diagnosing a mysterious latency spike in a web application without restarting or installing new packages. Lucas explains how bpftrace lets you attach one-liners to kernel probes to measure disk I/O, syscall latency, and scheduling delays, using real examples like tracing ext4 file operations and identifying a slow NFS server. The episode covers the difference between classic BPF and…
The skinny
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