37 lines
1.7 KiB
Markdown
37 lines
1.7 KiB
Markdown
# DataTable Performance Tracking
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## v1: Minimal Foundation
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- **Data**: 10,000 items, 1 column.
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- **Scroll Test**: 100 scrolls (20,000px total).
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- **Results**:
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- refreshCount: 101
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- refreshTime (total): ~45.7ms
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- averageRefreshTime: **0.45ms**
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- totalNodes: 3030 (avg 30/frame)
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- **Notes**: Silk smooth, base VirtualScroll works perfectly.
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## v4: Optimized Responsiveness (Immediate Refresh)
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- **Data**: 10,000 items, 10 columns.
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- **Scroll Test**: 100 scrolls (20,000px total).
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- **Results**:
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- refreshCount: 101
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- refreshTime (total): ~101.2ms
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- averageRefreshTime: **1.01ms**
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- totalNodes: 3030
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- **Notes**: Removed `.dt-body` wrapper to simplify DOM depth. Changed `onScroll` to execute `container.refresh()` immediately instead of wrapping it in `requestAnimationFrame`.
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## v6: Modularization & Manual DOM Sync (Selection)
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- **Data**: 10,000 items, 10 columns.
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- **Scroll Test**: 100 scrolls (20,000px total).
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- **Results**:
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- refreshCount: 100
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- refreshTime (total): ~176.9ms
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- averageRefreshTime: **1.76ms**
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- totalNodes: 4500 (avg 45/frame)
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- **scanCount (per frame)**: **0** (Maintained Zero-Scan)
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- **Notes**:
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- Added complex Area Selection, Copy/Paste, and Row Deletion.
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- Successfully decoupled dynamic UI states (like `.dt-cell-selected`) from the declarative binding framework. We now use manual DOM manipulation (`applySelectionUI`) during `refresh` to sync states.
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- This manual sync completely prevents "Dependency Floods" where scrolling would trigger heavy `$class` evaluations on every cell. We maintained the Zero-Scan status while supporting rich interactions.
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- Fixed a VirtualScroll jumping bug at row 70+ by re-enabling `onItemUpdate` so VirtualScroll correctly learns the 40px row height instead of using its 32px default.
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