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  The getSamples method in ArcGIS Server Image Service can be used for measuring performance.

Step-by-step guide

  1. Enter geometry.

    {"x":-19837193.917600676,"y":-3812345.7636769526,"spatialReference":{"wkid":102100,"latestWkid":3857}}
  2. Use Point for Geometric Type.
  3. Enter 1000 for Sample Count.
  4. Enter Mosaic Rule.

    {"mosaicMethod":"esriMosaicCenter","sortField":"","ascending":true,"mosaicOperation":"MT_FIRST","multidimensionalDefinition":[{"variableName":"ALL_SFC_SW_DIR","dimensionName":"StdZ","values":[0],"isSlice":true}]}
  5. Enter pixel size.

    {"x":611.4962262813791,"y":611.49622628138,"spatialReference":{"wkid":102100,"latestWkid":3857}}


If REST service asks login credentials and fails to retrieve samples, it means that permission is not set properly during 10.7 to 10.8 migration.

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