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[LOG] number of written datasets 0  12:19:04.265
[LOG] number of written datasets 1000  12:20:01.578
[LOG] number of written datasets 2000  12:21:02.393
[LOG] number of written datasets 3000  12:22:02.325
[LOG] number of written datasets 4000  12:23:07.406
[LOG] number of written datasets 5000  12:24:10.842
[LOG] number of written datasets 6000  12:25:14.716
[LOG] number of written datasets 7000  12:26:16.185
[LOG] number of written datasets 8000  12:27:23.561
[LOG] number of written datasets 9000  12:28:21.526
[LOG] number of written datasets 10000  12:29:19.388
[LOG] number of written datasets 11000  12:30:29.058
[LOG] number of written datasets 12000  12:31:35.885