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Resource Page

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A resource is a particular action for a given service (typically an individual endpoint or query). Read more about resources in Getting Started with APM. For each resource, APM automatically generates a dashboard page covering:

  • Key health metrics
  • Monitor status for all monitors associated with this service
  • List and metrics for all resources associated with this service

Out of the box graphs

Datadog provides out of the box graphs for any given resource:

  • Requests - Choose to display:
    • The Total amount of requests
    • The amount of Requests per second
  • Latency - Choose to display:
    • The Avg/p75/p90/p95/p99/Max latency of your traced requests
  • Error - Choose to display:
    • The Total amount of errors
    • The amount of Errors per second
    • The % Error Rate
  • Sub-Services: When there are multiple services involved, a fourth graph is available that breaks down your Total time spent/%of time spent/Avg time per request of your service by services or type.

    This represents the total/relative/average time spent by traces from the current service to the other services or type.

    Note: For services like Postgres or Redis, which are “final” operations that do not call other services, there is no sub-services graph.

Export to Timeboard

On the upper-right corner of each graph click on the arrow in order to export your graph into a pre-existing Timeboard:

Latency distribution

In addition to all those graph there is a resource latency distribution graph:

Use the top right selector of this graph to zoom on a given percentile of latency distribution:

Zoom on this graph to filter corresponding traces.

Span Summary

For a given resource, Datadog provides you a span analysis breakdown of all matching traces:

The displayed metrics represent, per span:

MetricDescription
Avg Span/traceAverage number of occurrences of the span, for traces including the current resource, where the span is present at least once.
% of tracesPercentage of traces including the current resource where the span is present at least once.
Avg durationAverage duration of the span, for traces including the current resource, where the span is present at least once.
Avg % Exec TimeAverage ratio of execution time for which the span was active, for traces including the current resource, where the span is present at least once.

Note: A span is considered active when it’s not waiting for a child span to complete. The active spans at a given time, for a given trace, are all the leaf spans (i.e.: spans without children).

Traces

Consult the list of traces associated with this resource. Filter/sort this list to see fast/slow and error/non-error traces:

Refer to the dedicated trace documentation to learn more.

Further Reading