Function benchmark_parallel_performance 

pub fn benchmark_parallel_performance<T, U, F>(
    data: &[T],
    config: &ParallelConfig,
    func: F,
) -> Result<PerformanceMetrics, BenfError>
where
    T: Clone + Send + Sync + 'static,
    U: Send + Sync + 'static,
    F: Fn(&T) -> U + Send + Sync + Copy + 'static,

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