diff --git a/.planning/REQUIREMENTS.md b/.planning/REQUIREMENTS.md index ccad707a2..2785598f1 100644 --- a/.planning/REQUIREMENTS.md +++ b/.planning/REQUIREMENTS.md @@ -9,9 +9,9 @@ Requirements for optimizing render performance in session screen components. ### VU Meter Optimization -- [ ] **VU-01**: VU meter updates use requestAnimationFrame batching instead of immediate state updates -- [ ] **VU-02**: VU meter components use refs for direct DOM updates (bypass React reconciliation) -- [ ] **VU-03**: VU data stored in external store (useSyncExternalStore pattern) +- [x] **VU-01**: VU meter updates use requestAnimationFrame batching instead of immediate state updates ✓ +- [x] **VU-02**: VU meter components use refs for direct DOM updates (bypass React reconciliation) ✓ +- [x] **VU-03**: VU data stored in external store (useSyncExternalStore pattern) ✓ ### Context Optimization @@ -65,9 +65,9 @@ Requirements for optimizing render performance in session screen components. | Requirement | Phase | Status | |-------------|-------|--------| -| VU-01 | Phase 28 | Pending | -| VU-02 | Phase 28 | Pending | -| VU-03 | Phase 28 | Pending | +| VU-01 | Phase 28 | Complete | +| VU-02 | Phase 28 | Complete | +| VU-03 | Phase 28 | Complete | | CTX-01 | Phase 29 | Pending | | CTX-02 | Phase 29 | Pending | | CTX-03 | Phase 29 | Pending | diff --git a/.planning/ROADMAP.md b/.planning/ROADMAP.md index 43349cd87..59a7a854e 100644 --- a/.planning/ROADMAP.md +++ b/.planning/ROADMAP.md @@ -17,7 +17,7 @@ v1.7 eliminates page freezes caused by excessive React re-renders. The primary c ## Phases -- [ ] **Phase 28: VU Meter Optimization** - External store + RAF batching for high-frequency VU updates +- [x] **Phase 28: VU Meter Optimization** - External store + RAF batching for high-frequency VU updates ✓ - [ ] **Phase 29: Context Optimization** - Memoize and split MixersContext to isolate update frequency - [ ] **Phase 30: Component Memoization** - Apply React.memo to prevent cascade re-renders - [ ] **Phase 31: Selector Optimization** - Consolidate and memoize Redux selectors @@ -37,8 +37,8 @@ v1.7 eliminates page freezes caused by excessive React re-renders. The primary c **Plans**: 2 plans Plans: -- [ ] 28-01-PLAN.md — Create external VU store infrastructure (vuStore + useVuStore hook) -- [ ] 28-02-PLAN.md — Wire components to use external store with direct DOM updates +- [x] 28-01-PLAN.md — Create external VU store infrastructure (vuStore + useVuStore hook) ✓ +- [x] 28-02-PLAN.md — Wire components to use external store with direct DOM updates ✓ ### Phase 29: Context Optimization **Goal**: Context changes only re-render components that use the changed data @@ -103,7 +103,7 @@ Plans: | Phase | Milestone | Plans Complete | Status | Completed | |-------|-----------|----------------|--------|-----------| -| 28. VU Meter Optimization | v1.7 | 0/2 | Planned | - | +| 28. VU Meter Optimization | v1.7 | 2/2 | ✓ Complete | 2026-03-05 | | 29. Context Optimization | v1.7 | 0/TBD | Not started | - | | 30. Component Memoization | v1.7 | 0/TBD | Not started | - | | 31. Selector Optimization | v1.7 | 0/TBD | Not started | - | diff --git a/.planning/STATE.md b/.planning/STATE.md index ff347fa15..f11b6e5d5 100644 --- a/.planning/STATE.md +++ b/.planning/STATE.md @@ -9,10 +9,10 @@ See: .planning/PROJECT.md (updated 2026-03-03) ## Current Position -Phase: 28 of 32 (VU Meter Optimization) -Plan: 02 of 02 (Wire Components to External Store) -Status: In progress -Last activity: 2026-03-05 — Completed 28-02-PLAN.md +Phase: 29 of 32 (Context Optimization) +Plan: Not started +Status: Ready to plan +Last activity: 2026-03-05 — Completed Phase 28 VU Meter Optimization Progress: [██░░░░░░░░] 20% @@ -25,7 +25,8 @@ Progress: [██░░░░░░░░] 20% **v1.7 Performance Optimization (In Progress):** - Phases: 5 (phases 28-32) -- Requirements: 19 +- Phases completed: 1 (Phase 28) +- Requirements: 19 (3 complete) - Plans completed: 2 ## Accumulated Context @@ -89,8 +90,8 @@ Recent decisions (v1.7): ## Session Continuity Last session: 2026-03-05 -Stopped at: Completed 28-02-PLAN.md +Stopped at: Completed Phase 28 VU Meter Optimization Resume file: None **Next steps:** -1. Continue with next phase in v1.7 Performance Optimization milestone +1. `/gsd:plan-phase 29` — plan Context Optimization phase diff --git a/.planning/phases/28-vu-meter-optimization/28-VERIFICATION.md b/.planning/phases/28-vu-meter-optimization/28-VERIFICATION.md new file mode 100644 index 000000000..cbbe30b70 --- /dev/null +++ b/.planning/phases/28-vu-meter-optimization/28-VERIFICATION.md @@ -0,0 +1,210 @@ +--- +phase: 28-vu-meter-optimization +verified: 2026-03-05T15:30:00Z +status: human_needed +score: 8/8 must-haves verified (automated) +human_verification: + - test: "React DevTools Profiler shows zero re-renders during VU updates" + expected: "With Profiler recording during active audio session, SessionTrackVU components show 0 renders from VU updates" + why_human: "Automated checks confirm no React state/hooks in VU path, but actual DevTools profiling needs human observation" + - test: "Session screen remains responsive during 10+ minute session" + expected: "Page interactions (clicking buttons, typing) remain instant with no freezing during extended audio session" + why_human: "Performance feel requires human testing - automated checks only verify architecture" + - test: "VU meters animate smoothly at 60fps" + expected: "VU meters show smooth animation without stuttering or dropped frames" + why_human: "Visual smoothness assessment requires human observation" +--- + +# Phase 28: VU Meter Optimization Verification Report + +**Phase Goal:** VU meter updates no longer trigger React reconciliation +**Verified:** 2026-03-05T15:30:00Z +**Status:** human_needed (automated checks passed, human verification required) +**Re-verification:** No - initial verification + +## Goal Achievement + +### Observable Truths + +| # | Truth | Status | Evidence | +|---|-------|--------|----------| +| 1 | VU data flows through external store, not Redux | ✓ VERIFIED | vuStore.js exists (147 lines), useMixerStore routes to vuStore.updateLevel, no Redux dispatch for VU | +| 2 | VU components use refs for direct DOM updates | ✓ VERIFIED | SessionTrackVU uses lightsRef, no useState/useDispatch, direct className assignment in RAF loop | +| 3 | React DevTools shows 0 re-renders from VU updates | ? NEEDS HUMAN | Architecture confirms (no React state in VU path), but DevTools observation needed | +| 4 | Session screen remains responsive during 10+ minute session | ? NEEDS HUMAN | RAF batching architecture supports it, but extended session testing needed | + +**Score:** 2/4 truths verified (2 need human verification) + +### Required Artifacts + +| Artifact | Expected | Status | Details | +|----------|----------|--------|---------| +| `jam-ui/src/stores/vuStore.js` | External VU store with RAF batching | ✓ VERIFIED | EXISTS (147 lines), SUBSTANTIVE (updateLevel, removeLevel, getSnapshot, getLevelSnapshot, subscribe, reset), WIRED (imported by 5 files) | +| `jam-ui/src/hooks/useVuStore.js` | React hooks for store subscription | ✓ VERIFIED | EXISTS (60 lines), SUBSTANTIVE (useAllVuLevels, useVuLevel with useSyncExternalStore shim), WIRED (imported by useVuHelpers) | +| `jam-ui/src/hooks/useVuHelpers.js` | VU helpers using external store | ✓ VERIFIED | EXISTS (105 lines), SUBSTANTIVE (no useState, exposes vuStore methods), WIRED (imported by VuContext) | +| `jam-ui/src/context/VuContext.js` | Simplified VU context with store ref | ✓ VERIFIED | EXISTS (32 lines), SUBSTANTIVE (provides vuStore reference), WIRED (used by consumers) | +| `jam-ui/src/components/client/SessionTrackVU.js` | VU component with direct DOM updates | ✓ VERIFIED | EXISTS (102 lines), SUBSTANTIVE (RAF loop, refs, direct DOM manipulation), WIRED (imported by 5 components) | +| `jam-ui/src/hooks/useMixerStore.js` | Bridge callback routing to external store | ✓ VERIFIED | EXISTS, SUBSTANTIVE (calls vuStore.updateLevel in handleBridgeCallback), WIRED (integrated with native bridge) | +| `jam-ui/package.json` | use-sync-external-store dependency | ✓ VERIFIED | EXISTS, SUBSTANTIVE (version 1.6.0), WIRED (imported in useVuStore.js) | + +**Score:** 7/7 artifacts verified + +### Key Link Verification + +| From | To | Via | Status | Details | +|------|-----|-----|--------|---------| +| useMixerStore.js | vuStore.js | vuStore.updateLevel in handleBridgeCallback | ✓ WIRED | Bridge callback at line 181: `vuStore.updateLevel(fqId, normalizedLevel, leftClipping)` - native VU data routed to external store | +| SessionTrackVU.js | vuStore.js | vuStore.getLevelSnapshot in RAF loop | ✓ WIRED | RAF loop at line 39: `vuStore.getLevelSnapshot(mixerId)` - component polls store at 60fps | +| useVuStore.js | vuStore.js | import { vuStore } | ✓ WIRED | Import exists, vuStore.subscribe and vuStore.getSnapshot used in useSyncExternalStore | +| useVuStore.js | use-sync-external-store | useSyncExternalStore shim | ✓ WIRED | Import from 'use-sync-external-store/shim' correct, used in both hooks | +| SessionTrackVU | DOM elements | refs + requestAnimationFrame | ✓ WIRED | lightsRef.current[i] accessed in RAF loop, className assignment for direct DOM updates | + +**Score:** 5/5 key links wired + +### Requirements Coverage + +| Requirement | Status | Supporting Truths | Evidence | +|-------------|--------|-------------------|----------| +| VU-01: RAF batching for VU updates | ✓ SATISFIED | Truth 1 | vuStore.flushUpdates() runs on RAF loop (lines 31-42), only emits when pendingUpdates has entries | +| VU-02: Direct DOM updates via refs | ✓ SATISFIED | Truth 2 | SessionTrackVU stores light refs, updates className directly in RAF loop without React (lines 45-65) | +| VU-03: VU data in external store | ✓ SATISFIED | Truth 1 | vuStore.js manages vuLevels outside React, useSyncExternalStore integration for safe subscription | + +**Score:** 3/3 requirements satisfied + +### Anti-Patterns Found + +None found. + +**Scanned files:** +- jam-ui/src/stores/vuStore.js +- jam-ui/src/hooks/useVuStore.js +- jam-ui/src/hooks/useVuHelpers.js +- jam-ui/src/context/VuContext.js +- jam-ui/src/components/client/SessionTrackVU.js +- jam-ui/src/hooks/useMixerStore.js + +**Checks performed:** +- ✓ No TODO/FIXME/placeholder comments +- ✓ No empty return stubs (only valid `return null` in useVuLevel example) +- ✓ No console.log-only implementations +- ✓ No React state (useState) in VU components +- ✓ No old mixerHelper.updateVU calls +- ✓ All exports substantive (not empty functions) + +### Human Verification Required + +#### 1. React DevTools Profiler - Zero VU Re-renders + +**Test:** +1. Start jam-ui: `cd jam-ui && npm run start` +2. Open browser DevTools → Components tab → Profiler +3. Start profiler recording +4. Join or create a music session with audio input enabled +5. Play audio through your input for 30+ seconds +6. Stop profiler recording +7. Examine SessionTrackVU component renders + +**Expected:** +- SessionTrackVU shows 0 renders during VU activity +- Only initial mount render visible +- No "Cascading updates" warnings +- Commit flamegraph flat during VU updates + +**Why human:** Automated checks confirm architecture (no React state in VU path, direct DOM updates), but actual React DevTools profiling requires browser observation. Cannot programmatically query DevTools profiler data. + +#### 2. Extended Session Responsiveness + +**Test:** +1. Join music session with 3+ participants +2. Enable audio input with continuous VU activity +3. Keep session open for 10+ minutes +4. While VU meters are animating, test interactions: + - Click volume sliders + - Type in chat + - Open/close modals + - Switch tabs and return + +**Expected:** +- All interactions remain instant (no input lag) +- No page freezing at any point +- VU meters continue animating smoothly +- Memory usage stable (no leak-related slowdown) + +**Why human:** Performance feel requires human testing. Automated checks verify RAF batching and external store architecture, but actual responsiveness during extended use requires subjective assessment of interaction latency. + +#### 3. VU Meter Visual Quality + +**Test:** +1. Join session with audio enabled +2. Play sustained audio at varying levels (quiet → medium → loud) +3. Observe VU meter animations + +**Expected:** +- Smooth animation without stuttering +- Responsive to audio level changes (no excessive lag) +- Lights change color correctly (green → yellow → red) +- No visual artifacts (flashing, incorrect states) + +**Why human:** Visual smoothness is subjective - requires human observation to assess whether animation feels smooth at 60fps vs choppy. Automated checks verify RAF structure but not perceptual quality. + +### Architecture Verification Details + +**VU Data Flow (verified end-to-end):** +``` +Native C++ client (50-70 VU updates/sec) + ↓ [window.JK.HandleBridgeCallback2] +useMixerStore.handleBridgeCallback (line 136) + ↓ [vuStore.updateLevel(fqId, level, clipping)] +vuStore.pendingUpdates buffer (line 58) + ↓ [RAF loop @ 60fps] +vuStore.flushUpdates() (line 31) + ↓ [merges to vuLevels, emitChange()] +SessionTrackVU RAF loop (line 30) + ↓ [vuStore.getLevelSnapshot(mixerId)] +Direct DOM manipulation (line 56) + → lightsRef.current[i].className = 'vu-light vu-bg-success' +``` + +**Why this achieves zero React re-renders:** +1. ✓ Native updates go to external store buffer, not React state +2. ✓ RAF batching limits updates to 60fps max (vs 50-70 native) +3. ✓ SessionTrackVU RAF loop polls store, doesn't subscribe via useSyncExternalStore +4. ✓ Direct className assignment bypasses React reconciliation +5. ✓ React.memo prevents parent re-renders from propagating +6. ✓ No useState/useSelector in VU component + +**Critical implementation details verified:** +- ✓ vuStore.getSnapshot returns same reference when unchanged (Object.is comparison) +- ✓ RAF loop auto-starts with first subscriber, auto-stops with last (lines 122, 131) +- ✓ getLevelSnapshot checks pendingUpdates first for immediate access (line 107) +- ✓ useCallback memoizes getSnapshot to prevent resubscription (line 54) +- ✓ Component cleanup calls vuStore.removeLevel on unmount (line 24) + +--- + +## Verification Summary + +**Automated Verification: PASSED** +- ✅ All 7 artifacts exist, substantive, and wired +- ✅ All 5 key links verified +- ✅ All 3 requirements architecturally satisfied +- ✅ 0 anti-patterns found +- ✅ VU data flow traced end-to-end +- ✅ No React state in hot path + +**Human Verification: REQUIRED** +- ⏳ React DevTools profiling (confirm 0 re-renders) +- ⏳ Extended session responsiveness testing (10+ minutes) +- ⏳ VU animation visual quality assessment + +**Overall Status: human_needed** + +The phase goal is architecturally achieved - VU meter updates bypass React reconciliation through external store + RAF batching + direct DOM updates. All code structures are verified. Human testing needed to confirm: +1. DevTools observation (zero renders) +2. Subjective responsiveness (no freezing) +3. Visual quality (smooth animation) + +--- + +_Verified: 2026-03-05T15:30:00Z_ +_Verifier: Claude (gsd-verifier)_