forked from 1b-agent/opencadstudio-upstream
Karim Jerbi
133bfddba9
Adds ui_selection_overlay bench (benches/performance_benchmarks.rs + README metric 31): builds a representative selection overlay element (snap, crosshair, UCS tripod, 128 grips quick / 4096 capped full) and times widget-tree construction. Measured 0.4us typical, 2.4us at the cap (threshold 50us). Adds ribbon/statusbar section marks to the chrome bucket in view_main (src/app/view/mod.rs) so live PERF=1 view-detail traces attribute those two costs separately. Gated on the existing perf switch; no-op otherwise. Adds pub re-exports of CursorType/IsoPlane (src/app/mod.rs) for the bench fixture (same pattern as the existing grip re-exports). Ranked result over all ui_* benches: ribbon view construction ~556us (largest; follow-up already tracked), everything else under 50us or synthetic-fixture shapes. No new follow-up filed. GPU and canvas-draw costs are unmeasurable in headless runs (view() never executes there).
98 lines
4.9 KiB
Markdown
98 lines
4.9 KiB
Markdown
# OpenCADStudio Performance Benchmarks
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A standardized, statistical performance benchmarking suite measuring throughput, latency, and memory metrics across core CAD subsystems and the user interface.
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## Quick Start
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Run the full benchmark suite with native `--release` optimizations:
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```powershell
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cargo bench
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```
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Run a fast validation smoke test (~2 seconds):
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```powershell
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cargo bench --bench performance_benchmarks -- --quick
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```
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> [!NOTE]
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> Benchmarks are registered under `[[bench]]` with `harness = false`. They are **never** executed by regular `cargo test` runs, preventing CI slowdowns.
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---
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## Benchmark Suite Catalog (31 Metrics)
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### 1. Scene & Entity Management
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- `scene_entity_ingestion_10k`: Ingestion throughput for 10,000 mixed 2D entities (Lines, Circles, Arcs, Polylines).
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- `batch_entity_transform_mutation`: Translating 1,000 entities, invoking `bump_entities`, and updating the spatial acceleration structure.
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- `undo_delta_recording_cycle`: Capturing before-images and transactional delta recordings for 500 entity mutations.
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### 2. Geometry Tessellation & Viewport Navigation
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- `analytical_curved_tessellation`: Initial wire generation for 14,000 curved entities (circles, arcs, ellipses, polylines).
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- `wire_partitioning_per_frame`: Partitioning 14,000 wires into GPU analytical instances vs regular lines.
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- `analytical_curved_zoom_100x`: 100 camera zoom navigations measuring frame overhead and FPS.
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- `wide_and_tapered_arc_tessellation`: Tessellating 7,500 thick polyline arcs, tapered arcs, and donuts.
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- `zoom_extents_bounding_box_calc`: Cold axis-aligned bounding box (AABB) calculation across 20,000 mixed entities (`ZOOM EXTENTS`).
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### 3. Spatial Indexing, Snapping & Picking
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- `spatial_interaction_index_build`: Building the spatial `InteractionIndex` and `prepare_screen` for 10,000 wires.
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- `hit_test_click_pick_latency`: Single-point cursor click selection across 5,000 entities in screen space.
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- `hit_test_box_window_enclosed`: Window selection (`box_hit` enclosed) across 5,000 entities.
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- `hit_test_box_crossing_boundary`: Crossing selection (`box_hit` crossing boundary) across 5,000 entities.
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- `osnap_cursor_tracking_latency`: Real-time cursor snapping across Endpoint, Midpoint, Center, Intersection, and Nearest modes.
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### 4. Parametrics & DXF I/O
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- `constraint_solver_dogleg_system`: Solving coupled 2D geometric constraints (Perpendicular, Parallel, Length) via the Dogleg solver.
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- `dxf_export_write_throughput`: Serializing 5,000 entities to DXF binary stream.
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- `dxf_import_parse_throughput`: Parsing DXF stream of 5,000 entities into `CadDocument`.
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### 5. UI & Viewport Overlay Performance
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- `ui_ribbon_view_construction`: Per-frame ribbon widget tree construction.
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- `ui_grid_geometry_uncached`: Multi-pane tiled viewport grid projection and segment generation.
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- `ui_grid_cache_hit_evaluation`: Grid overlay cache key construction and reuse decision.
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- `ui_icon_handle_cached`: Themed SVG icon cache hit (FxHashMap lookup + Handle clone).
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- `ui_icon_handle_uncached`: Uncached SVG icon memory parse and Handle allocation.
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- `ui_plotstyle_layer_usage`: Plot Style 256-bucket ACI layer-usage table rebuild (200 layers).
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- `ui_statusbar_derived_data`: Status-bar cached derived-data hit (layout names + scale picker `Arc` clones).
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- `ui_grip_budget`: Budgeted per-frame selection-grip projection (dense-polyline grips capped to `MAX_SELECTED_GRIPS`).
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- `ui_grip_budget_build`: Selection-change `apply_grip_budget` cost over the full grip set (sort + FxHashSet + filter).
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- `ui_constraint_glyphs`: Constraint-glyph cache hit (`cached_glyph_placements` key build + `Arc` clone over dozens of glyphs, no recompute).
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- `ui_selection_overlay`: Selection overlay Element construction (widget tree with capped grip count, no canvas draw).
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### 6. State Management & Draworder
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- `selection_state_deep_clone`: Deep cloning of `SelectionState` (with 64 polygon points).
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- `selection_state_arc_clone`: `Arc<SelectionState>::clone` (atomic reference bump).
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- `draworder_depth_map_full_build`: Full draworder depth map generation across 10,000 ordered entities.
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- `draworder_depth_map_incremental_patch`: Fast-path incremental depth map patch on entity modification.
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---
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## Filtering Benchmarks
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Filter execution by subsystem or name pattern:
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```powershell
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# Filter by UI
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cargo bench --bench performance_benchmarks -- ui
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# Filter by tessellation
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cargo bench --bench performance_benchmarks -- tessellation
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# Filter by hit testing
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cargo bench --bench performance_benchmarks -- hit_test
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```
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---
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## Baseline Tracking & Regression Detection
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### 1. Save Current Metrics as Baseline
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```powershell
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cargo bench --bench performance_benchmarks -- --output target/baseline_metrics.json
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```
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### 2. Compare PR / Branch Against Baseline
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```powershell
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cargo bench --bench performance_benchmarks -- --baseline target/baseline_metrics.json
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```
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The benchmark runner will output statistical deltas (`% faster` / `% slower`) for each metric and flag regressions exceeding the defined thresholds.
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