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Extractbymask Mosaic datasets very slow

Question asked by zoexili on Dec 12, 2018
Latest reply on Dec 27, 2018 by DRadich-esristaff

I am trying to extractbymask thousands of mosaic datasets using python. The mosaic extent includes 2 images each having 25,000,000 30-m pixels. However, the speed for processing one image is much slower than doing it manually on arcgis desktop. Does anyone know why (because of mosaic datasets' properties) and how to fasten the progress? 

Thank you very much!