# Random Interleaving [Random Interleaving](https://github.com/google/benchmark/issues/1051) is a technique to lower run-to-run variance. It randomly interleaves repetitions of a microbenchmark with repetitions from other microbenchmarks in the same benchmark test. Data shows it is able to lower run-to-run variance by [40%](https://github.com/google/benchmark/issues/1051) on average. To use, you mainly need to set `--benchmark_enable_random_interleaving=true`, and optionally specify non-zero repetition count `--benchmark_repetitions=9` and optionally decrease the per-repetition time `--benchmark_min_time=0.1`.