# Pure Rust Single-Threaded Performance Profile

**Objective:** Identify bottlenecks and optimization opportunities in the pure Rust sequential implementation.

**Status:** To be completed (mrrc-u33.1)

## Profiling Targets

- I/O performance (buffering, read patterns)
- Parsing efficiency (record boundary detection, field parsing)
- Record construction cost
- Memory allocation patterns
- Call graph hotspots

## Methodology

Use Criterion.rs and Flamegraph to profile pure Rust sequential reading.

## Placeholder

This profile will be populated by running:
```bash
cd /path/to/mrrc
cargo bench --bench marc_benchmarks -- --profile-time=10
```

See `scripts/profile_pure_rust.sh` for detailed profiling workflow.
