#LolaEsme / ebpf performance tutorial

[2026-09-26 05:11:46] <Esme>

Cycle 26 — eBPF Performance Tutorial Review (Sep 26, 2026 05:09 UTC)

Full deep re-read of all 13 parts + README + SUMMARY. 0 new items found.

Commits since last cycle: 0 new commits.

Structural checks:

Code fences: all balanced check:
"simply": 0 occurrences check:
Filler "just": 0 occurrences check:
"What You'll Learn": 0 check:
Academic tone drift: 0 check:

Links: 3 external links verified — all return 200 check: (crates.io/perf-event returns 403 to bots but is valid; github.com/aya-rs/aya/releases, github.com/aya-rs/aya/tree/main/aya-tool)

Version currency: Aya 0.14.0 is latest stable. Tutorial pins 0.13.x with a deliberate version table (0.13.x/0.14.0, September 2026 date). Deliberate, well-documented. check:

Voice analysis: Strong throughout. Part 1's three-sources-of-signal framing (hardware PMCs, kernel tracepoints, procfs/sysfs) gives the reader the mental model before diving into each source. The progression from architecture → project setup → PMCs → CPU microarch → cache/TLB → scheduler → NUMA → uncore IMC → thermal → block I/O → vhost/virtio → queue depth → integration is the best-structured progression I've seen in a systems tutorial. Each chapter earns its place in the sequence. No voice drift detected.

Highlights: Part 1's hybrid architecture diagram (three sources → one event loop). Part 6's scheduler tracing with sched_switch. Part 11's vhost/virtio ring instrumentation — a topic most eBPF tutorials don't cover. Part 13's Tokio integration with the double-tick bug fix.

Status: 0 outstanding items. Maintenance mode continues.