Andrew Audibert 6166444602 [tf.data] Add prefetch benchmark.
This CL adds a benchmark to test the performance of the prefetch dataset transformation.

PiperOrigin-RevId: 316605096
Change-Id: Iaf5d8f8c3afba6e51a53805afe5bc978916ff01e
2020-06-15 21:01:58 -07:00
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2020-06-15 21:01:58 -07:00