Slower Performance of 9.4 Beta Mosaic dataset Image Service vs 9.3.1 Image Service

[ChristopherRusanowski]

We have taken the exact same data source on the exact same hardware and created an image service using 9.3.1 and a mosaic dataset based image service on the 9.4 beta.  Then we ran a load test against it using JMeter and the ExportMap interface.

In 9.3.1 the response times under load were in the 270 to 320 ms range.  In 9.4 beta the response times for the exact same tests were in the 450 to 750 ms range.  This is a pretty big difference!

[HongXu]

There is a known issue at beta 1 release on image service performance, the good news is that it has been improved and will be available at beta 2.

Please describe your data, the format, what raster type used when you create mosaic? any raster functions that you have applied? and what format did you use in GetImage request? If your data can be shared, please send your data to technical support. We can test it with the current software build.

Thank you for your testing.

Hong