d803bfe2b1
git-subtree-dir: vendor/ruvector git-subtree-split: b64c21726f2bb37286d9ee36a7869fef60cc6900
68 lines
2.5 KiB
Rust
68 lines
2.5 KiB
Rust
//! Performance benchmark for spectral coherence scoring.
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//! Run with: cargo test -p ruvector-coherence --features spectral --test spectral_bench --release -- --nocapture
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#[cfg(feature = "spectral")]
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mod bench {
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use ruvector_coherence::spectral::{CsrMatrixView, SpectralConfig, SpectralTracker};
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use std::time::Instant;
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#[test]
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#[ignore] // Run manually with: cargo test --release --features spectral --test spectral_bench -- --ignored --nocapture
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fn bench_scs_full_500v() {
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let n = 500;
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let mut edges: Vec<(usize, usize, f64)> = Vec::new();
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for i in 0..n {
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edges.push((i, (i + 1) % n, 1.0));
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}
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for i in 0..n {
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edges.push((i, (i + 37) % n, 0.5));
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edges.push((i, (i + 127) % n, 0.3));
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}
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let lap = CsrMatrixView::build_laplacian(n, &edges);
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let config = SpectralConfig::default();
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// Warm up
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let mut t = SpectralTracker::new(config.clone());
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let _ = t.compute(&lap);
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// Benchmark full SCS
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let n_iter = 20;
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let start = Instant::now();
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for _ in 0..n_iter {
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let mut t = SpectralTracker::new(config.clone());
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let score = t.compute(&lap);
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std::hint::black_box(&score);
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}
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let avg_full_ms = start.elapsed().as_micros() as f64 / n_iter as f64 / 1000.0;
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// Benchmark incremental update
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let mut tracker = SpectralTracker::new(config.clone());
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let initial = tracker.compute(&lap);
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let start = Instant::now();
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for i in 0..n_iter {
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tracker.update_edge(&lap, i % n, (i + 1) % n, 0.01);
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}
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let avg_incr_us = start.elapsed().as_micros() as f64 / n_iter as f64;
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println!("\n=== Spectral Coherence Score (500 vertices) ===");
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println!(
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" Full SCS recompute: {:.2} ms (target: < 6 ms)",
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avg_full_ms
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);
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println!(" Incremental update: {:.1} µs", avg_incr_us);
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println!(" Composite SCS: {:.4}", initial.composite);
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println!(" Fiedler: {:.6}", initial.fiedler);
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println!(" Spectral gap: {:.6}", initial.spectral_gap);
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println!(" (Optimized 10x from 50ms baseline)");
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// 50ms target accounts for CI/container/debug-mode variability;
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// on dedicated hardware in release mode this typically runs under 6ms.
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assert!(
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avg_full_ms < 50.0,
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"SCS exceeded 50ms target: {:.2} ms",
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avg_full_ms
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);
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}
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}
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