Diagnose and fix Rust performance bottlenecks with criterion benchmarking, flamegraph profiling, perf and dtrace integration, and the canonical optimization patterns for allocations, branches, and SIMD.
## CONTEXT Rust gives you C-level performance with high-level abstractions, but only if you measure and optimize the right things. The naive Rust program with vec.iter().collect() chains, String concatenations in loops, and Arc<Mutex<HashMap>> for state can be 10x slower than the same algorithm written deliberately…
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