Method _fast_users_on_workers_copy

locust/dispatch.py:391–397

deepcopy is too slow, so we use this custom copy function. The implementation was profiled and compared to other implementations such as dict-comprehensions and the one below is the most efficient.

(users_on_workers: dict[str, dict[str, int]])

    @staticmethod
    def _fast_users_on_workers_copy(users_on_workers: dict[str, dict[str, int]]) -> dict[str, dict[str, int]]:
        """deepcopy is too slow, so we use this custom copy function.

        The implementation was profiled and compared to other implementations such as dict-comprehensions
        and the one below is the most efficient.
        """
        return dict(zip(users_on_workers.keys(), map(dict.copy, users_on_workers.values())))