Interpret ArcGIS Enterprise logs to determine the causes of issues

"10000–10999"

"Map services"

"17000–19999"

"Feature services"

"20000–20999"

"Geoprocessing services"

"100000–100999"

"System"

"102000–102999"

"Geodatabase"

"106000–106999"

"Geoprocessing"

"110000–110999"

"ArcGIS Data Store"

"120000–169999"

"Geodatabase"

"What is fine-grained logging in ArcGIS Server used for?"

"Logging down to the layer draw level

"Which log level provides detailed information about map draw performance?"

"Verbose."

"What is the first step to enable verbose logging in ArcGIS Server Manager?"

"Open Manager, log in, and go to Logs > View Logs > Settings."

"After opening the Logs settings, what should you do to enable detailed logging?"

"Set the log level to Verbose and click Save."

"How do you generate a log entry for analysis after enabling verbose logging?"

"Make a simple request to the map service in a client application by panning or zooming, and note the current time."

"How do you filter logs for a specific map service?"

"In Manager, go to Logs > View Logs, set Level to Verbose, and Source to ServiceName.MapServer."

"What is a helpful method to examine which layers are taking the longest to draw?"

"Use Printer Friendly View to print the log and highlight draw times and feature counts for each layer."

"Why is it useful to check the feature count for each layer in the logs?"

"To identify inefficient layers; a low feature count with long draw times may indicate inefficiency."

"Why should you repeat verbose logging at several locations and scales in your map?"

"To analyze a representative sample of symbology and layers and get accurate performance metrics."

"What should you do after finishing verbose logging analysis?"

"Set the log level back to Warning."

"What do the log messages 'Beginning of layer draw' and 'End of layer draw' indicate?"

"The start and end of the GIS server tier processing for a layer; the elapsed time shows how long the GIS server spent drawing the layer."

"If the GIS server tier performance is acceptable but the map is still slow, what might be the issue?"

"The web server may be causing delays or the application may be waiting for available service instances."

"What ArcGIS Server module contains a table of log codes for map service analysis?"

"The Map service log codes topic."

"What is an example of an event that creates a log entry for a map service?"

"An ExportMapImage request, such as when panning or zooming the map."

"Why is verbose logging helpful when troubleshooting slow map services?"

"It pinpoints which layers or features are causing slow draw times and helps identify inefficiencies in symbology or data."