topic Re: Performace of Mosaic Dataset when launched as image service in Data Management Questions https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11532#M608 <HTML><HEAD></HEAD><BODY><SPAN>The presence of the pyramids will affect how many overviews are created.&nbsp; If you remove the pyramids and then generate new overviews you are not really gaining much. I am not sure where you are going with this, but perhaps if you are looking to generate more overviews, you can use the define overviews to force more overviews to be created. This will give the image service more levels to choose from and increase performance. Perhaps you should take a look at this </SPAN><A href="http://blogs.esri.com/esri/arcgis/2012/11/14/should-i-build-pyramids-or-overviews/">blog</A><SPAN>.</SPAN></BODY></HTML> Fri, 30 Nov 2012 15:28:14 GMT JeffreySwain 2012-11-30T15:28:14Z Performace of Mosaic Dataset when launched as image service https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11529#M605 <HTML><HEAD></HEAD><BODY><SPAN>All, </SPAN><BR /><BR /><SPAN>I would like to know which one of the below would give a good performance for Image Service </SPAN><BR /><BR /><SPAN>Mosaic Datasets with Overviews and Pyramids </SPAN><BR /><SPAN>OR</SPAN><BR /><SPAN>Mosaic Datasets with Overviews Alone </SPAN><BR /><BR /><SPAN>The Source Raster can be .sid,jpeg ,tiff formats </SPAN><BR /><BR /><SPAN>Thanks</SPAN></BODY></HTML> Fri, 30 Nov 2012 13:00:59 GMT https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11529#M605 VikramS 2012-11-30T13:00:59Z Re: Performace of Mosaic Dataset when launched as image service https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11530#M606 <HTML><HEAD></HEAD><BODY><SPAN>Very open ended question.&nbsp; It is usually data specific.&nbsp; Usually if you ignore the pyramids, it will generate more overviews to cover for the data.&nbsp; The overviews increase the performance.</SPAN></BODY></HTML> Fri, 30 Nov 2012 13:33:09 GMT https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11530#M606 JeffreySwain 2012-11-30T13:33:09Z Re: Performace of Mosaic Dataset when launched as image service https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11531#M607 <HTML><HEAD></HEAD><BODY><SPAN>We already have pyramids for some of the source data . So my question if we remove the pyramids and rebuild overview . Is this going to improve the performance ?</SPAN></BODY></HTML> Fri, 30 Nov 2012 14:36:21 GMT https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11531#M607 VikramS 2012-11-30T14:36:21Z Re: Performace of Mosaic Dataset when launched as image service https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11532#M608 <HTML><HEAD></HEAD><BODY><SPAN>The presence of the pyramids will affect how many overviews are created.&nbsp; If you remove the pyramids and then generate new overviews you are not really gaining much. I am not sure where you are going with this, but perhaps if you are looking to generate more overviews, you can use the define overviews to force more overviews to be created. This will give the image service more levels to choose from and increase performance. Perhaps you should take a look at this </SPAN><A href="http://blogs.esri.com/esri/arcgis/2012/11/14/should-i-build-pyramids-or-overviews/">blog</A><SPAN>.</SPAN></BODY></HTML> Fri, 30 Nov 2012 15:28:14 GMT https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11532#M608 JeffreySwain 2012-11-30T15:28:14Z Re: Performace of Mosaic Dataset when launched as image service https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11533#M609 <HTML><HEAD></HEAD><BODY><SPAN>Greetings,</SPAN><BR /><BR /><SPAN>I strongly encourage you to read this two part blog discussing pyramids/overviews.</SPAN><BR /><BR /><A href="http://blogs.esri.com/esri/arcgis/2011/10/26/overviews-and-pyramids-part-1-of-2-what-are-they-and-why-do-i-need-them/">Overviews and pyramids: Part 1 of 2, What are they and why do I need them?</A><A href="http://blogs.esri.com/esri/arcgis/2011/10/26/overviews-and-pyramids-part-1-of-2-what-are-they-and-why-do-i-need-them/"><BR /></A><SPAN> </SPAN><BR /><A href="http://blogs.esri.com/esri/arcgis/2011/11/01/overviews-and-pyramids-part-2-of-2-doesnt-my-mosaic-dataset-use-both/">Overviews and pyramids: Part 2 of 2, Doesn�??t my mosaic dataset use both?</A><BR /><BR /><SPAN>Best,</SPAN><BR /><SPAN>Eric</SPAN></BODY></HTML> Fri, 30 Nov 2012 15:35:50 GMT https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11533#M609 EricRice 2012-11-30T15:35:50Z Re: Performace of Mosaic Dataset when launched as image service https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11534#M610 <HTML><HEAD></HEAD><BODY><SPAN>Thank you jeff and Eric for the reply .. The Blog was really good . It gave useful tips . Probably to make myself clear I am restating my problem .. </SPAN><BR /><BR /><SPAN>We Have Satellite images , elevation data in different file formats .. Previously While we created the mosaic datasets we built overview (Build Overviews) as well as the pyramids (Build pyramids and statistics tool) .. Now we are cleaning the mosaic datasets so this question came up whether </SPAN><BR /><SPAN>Both pyramids and overviews are required for good performance of mosaic dataset </SPAN><BR /><SPAN>OR</SPAN><BR /><SPAN>Only Overviews are enough for good performance of mosaic dataset</SPAN></BODY></HTML> Thu, 06 Dec 2012 14:28:49 GMT https://community.esri.com/t5/data-management-questions/performace-of-mosaic-dataset-when-launched-as/m-p/11534#M610 VikramS 2012-12-06T14:28:49Z