# Benchmarks
Although performance optimizations have not been the main focus so far, you can benchmark Polytune and get a feel for how it performs. We provide a benchmark for our `join` example which joins two databases with `n_records` records:
```
cargo bench join
```
To run the `join` benchmark once and produce a flamegraph:
```
sudo CARGO_PROFILE_BENCH_DEBUG=true cargo flamegraph --bench join
```
To run the `join` benchmark multiple times, benchmark it, then produce a flamegraph:
```
sudo CARGO_PROFILE_BENCH_DEBUG=true cargo flamegraph --bench join -- --bench
```
To run all the benchmarks you can run:
```
cargo bench
```
