mindspore.dataset.config.get_prefetch_size

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mindspore.dataset.config.get_prefetch_size()

获取数据处理管道的输出缓存队列长度。 如果 set_prefetch_size 方法未被调用,那么将会返回默认值16。

返回:

int,表示预取的总行数。

样例:

>>> # Get the global configuration of prefetch size.
>>> # If set_prefetch_size() is never called before, the default value(16) will be returned.
>>> import mindspore.dataset as ds
>>> prefetch_size = ds.config.get_prefetch_size()