Rust zero-cost abstractions vs. SIMD
7 hours ago
- #Rust
- #Database
- #Performance Optimization
- Reduced full-text search query latency from 220ms to 47ms by optimizing Rust's 'zero-cost' iterators.
- Discovered that Rust's iterators were preventing vectorization, leading to high merge costs in queries with many filter values.
- Implemented batched iterators to amortize merge costs and enable SIMD vectorization, significantly improving performance.
- Highlighted the importance of mechanical sympathy and looking beyond abstractions for performance optimizations.
- Demonstrated the effectiveness of batched iterators, a decades-old database technique, in modern Rust applications.