[GitHub] moveforever commented on issue #9819: Sometime MXDataIter load data quickly, sometime it load data slowly?

[GitBox]

moveforever commented on issue #9819: Sometime MXDataIter load data quickly, 
sometime it load data slowly?
URL: 
https://github.com/apache/incubator-mxnet/issues/9819#issuecomment-368394300
 
 
   My data format is including sparse
   
![image](https://user-images.githubusercontent.com/5248288/36654508-1f325ef8-1af8-11e8-9259-778ea2f578ee.png)
   

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