---
phase: 20-book-load-testing
plan: 01
subsystem: docs
tags: [mdbook, load-testing, cargo-pmcp, hdrhistogram, breaking-point, ci-cd]

requires:
  - phase: none
    provides: "standalone documentation plan"
provides:
  - "Complete Chapter 14: Performance and Load Testing for pmcp-book"
  - "CLI reference, TOML config reference, execution modes, metrics, breaking point, CI/CD integration"
affects: [21-book-mcp-apps, 22-course-load-testing]

tech-stack:
  added: []
  patterns: [k6-style-summary, ascii-vu-diagrams, annotated-toml-examples]

key-files:
  created: []
  modified:
    - pmcp-book/src/ch14-performance.md

key-decisions:
  - "Wrote entire chapter in one pass covering all 12 sections from source code analysis"
  - "All CLI flags, config fields, metric names, threshold constants, and JSON report schema extracted from actual Rust source"

patterns-established:
  - "Book chapter style: introduction, quick start, reference tables, ASCII diagrams, annotated examples, best practices, summary with cross-references"

requirements-completed: [BKLT-01, BKLT-02, BKLT-03]

duration: 4min
completed: 2026-02-28
---

# Phase 20 Plan 01: Chapter 14 Performance and Load Testing Summary

**961-line comprehensive load testing chapter covering CLI usage, TOML configuration, flat/staged execution modes, HdrHistogram metrics with coordinated omission correction, self-calibrating breaking point detection, JSON report schema, and CI/CD integration with GitHub Actions**

## Performance

- **Duration:** 4 min
- **Started:** 2026-02-28T01:44:01Z
- **Completed:** 2026-02-28T01:48:09Z
- **Tasks:** 2
- **Files modified:** 1

## Accomplishments
- Replaced 12-line stub with 961-line production-quality chapter
- All documentation details extracted from actual Rust source code (13 source files read)
- Complete CLI reference matching clap enum in mod.rs (run and init subcommands, all flags)
- Full TOML config reference matching config.rs structs (Settings, ScenarioStep, Stage)
- Flat and staged execution mode documentation with ASCII VU profile diagrams
- Schema discovery workflow with default vs discovered template comparison
- HdrHistogram percentile explanation with coordinated omission correction mechanics
- Breaking point detection documentation with all threshold constants from breaking.rs
- Full JSON report schema matching LoadTestReport struct in report.rs
- GitHub Actions workflow example for CI/CD quality gates
- 10-point best practices section

## Task Commits

Each task was committed atomically:

1. **Task 1: Write Ch 14 core sections -- CLI, Configuration, and Execution Modes** - `66e12de` (feat)

**Plan metadata:** pending (docs: complete plan)

## Files Created/Modified
- `pmcp-book/src/ch14-performance.md` - Complete Chapter 14 replacing stub (961 lines)

## Decisions Made
- Combined Task 1 and Task 2 content into a single coherent write since the chapter flows naturally as one document
- All CLI flags, config field names, metric names, threshold constants, and JSON report fields extracted from actual source code -- zero guessed values
- Matched Ch 15 style: introduction framing, testing pyramid analogy, section headers, code blocks, tips, ASCII diagrams

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
None.

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- Chapter 14 is complete and ready for mdbook build
- Phase 21 (book MCP apps chapter) can proceed independently

## Self-Check: PASSED

- FOUND: pmcp-book/src/ch14-performance.md (961 lines)
- FOUND: .planning/phases/20-book-load-testing/20-01-SUMMARY.md
- FOUND: commit 66e12de

---
*Phase: 20-book-load-testing*
*Completed: 2026-02-28*
