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HTTP monitor metrics in Synthetic Monitoring

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Metrics and dimensions

Monitor

Metric keyMetric nameMetric descriptionUnitDimensions

dt.synthetic.http.availability

Availability rate (by location) [HTTP monitor]

The availability rate of HTTP monitors.

%

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

interpolated

dt.synthetic.http.dns

DNS lookup time (by location) [HTTP monitor]

The time taken to resolve the hostname for a target URL for the sum of all requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.download_time

Download time (by location) [HTTP monitor]

The time taken to download the HTTP response for the sum of all steps. This metric isn't based on the metric in Synthetic Classic.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.duration

Duration (by location) [HTTP monitor]

The duration of the sum of all requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.duration_threshold

Duration threshold [HTTP monitor]

The performance threshold for the sum of all requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.executions

Execution count (by status) [HTTP monitor]

The number of monitor executions. The maintenance_window dimension is available in Synthetic Classic only.

count

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

result.status.message

result.status.code

result.state

result.http_status.code

dt.maintenance_window_ids

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

maintenance_window

dt.synthetic.http.response_size

Response size (by location) [HTTP monitor]

The response size of the sum of all requests.

By

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.tcp_connect_time

TCP connect time (by location) [HTTP monitor]

The time taken to establish the TCP connection to the server (including SSL) for the sum of all requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.time_to_first_byte

Time to first byte (by location) [HTTP monitor]

The time taken until the first byte of the response is received from the server, relevant application caches, or a local resource. Calculated for the sum of all steps.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.tls_handshake_time

TLS handshake time (by location) [HTTP monitor]

The time taken to complete the TLS handshake for the sum of all requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.redirects_count

Redirects count (by location) [HTTP monitor]

The number of redirects for the sum of all requests.

count

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.redirects_time

Redirects Time (by location) [HTTP monitor]

The time taken to complete the redirects for the sum of all requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.waiting_time

Waiting time (by location)[HTTP monitor]

The time taken for the server to respond with the first byte for the sum of all steps. This metric isn't based on the metric in Synthetic Classic.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

Steps

Metric keyMetric nameMetric descriptionUnitDimensions

dt.synthetic.http.request.dns

DNS lookup time (by request, location) [HTTP monitor]

The time taken to resolve the hostname for a target URL for individual HTTP requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.download_time

Download time (by step, location) [HTTP monitor]

The time taken to resolve the hostname for a target URL for individual HTTP steps. This metric isn't based on the metric in Synthetic Classic.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.duration

Duration (by request, location) [HTTP monitor]

The duration of individual HTTP requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.executions

Execution count (request) [HTTP monitor]

The number of request executions.

count

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

result.status.message

result.status.code

result.state

result.http_status.code

dt.maintenance_window_ids

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.response_size

Response size (by request, location) [HTTP monitor]

The response size of individual HTTP requests.

By

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.tcp_connect_time

TCP connect time (by request, location) [HTTP monitor]

The time taken to establish the TCP connection to the server (including SSL) for individual HTTP requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.time_to_first_byte

Time to first byte (by request, location) [HTTP monitor]

The time taken until the first byte of the response is received from the server, relevant application caches, or a local resource. Calculated for individual HTTP requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.tls_handshake_time

TLS handshake time (by request, location) [HTTP monitor]

The time taken to complete the TLS handshake for individual HTTP requests.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.redirects_count

Redirects count (request) [HTTP monitor]

The number of redirects.

count

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.redirects_time

Redirects Time (request) [HTTP monitor]

The time taken to complete the redirects.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

dt.synthetic.http.request.waiting_time

Waiting time (step) (by location) [HTTP monitor]

The time taken for the server to respond with the first byte. This metric isn't based on the metric in Synthetic Classic.

ms

dt.synthetic.monitor.id

dt.entity.http_check

monitor.name

dt.synthetic.step.id

dt.entity.http_check_step

step.name

step.sequence_number

dt.entity.synthetic_location

dt.synthetic.monitored_entity_ids

primary_tags.__key__

dt.security_context

Deprecated

Metric keyMetric nameMetric descriptionUnitDimensions

dt.synthetic.http.availability.excluding_maintenance_windows

Availability rate excluding maintenance windows (by location) [HTTP monitor]

The availability rate of HTTP monitors excluding maintenance windows. The metric doesn't exist in the latest Dynatrace.

%

dt.entity.http_check

dt.entity.synthetic_location

Use cases

The following use cases show how you can use the metrics in your DQL queries.

Track monitor availability

Suppose you need to identify monitors that have availability issues.

The following query uses the dt.synthetic.http.availability metric and the dt.entity.http_check dimension to return the monitors sorted by their availability, with the least available monitors listed first.

timeseries {
  availability_series = avg(dt.synthetic.http.availability) },
by:{ dt.entity.http_check }
| fieldsAdd monitor_name = entityName(dt.entity.http_check)
| summarize { monitor_name = takeFirst(monitor_name),
              availability =  avg(arrayAvg(availability_series)) },
            by: {dt.entity.http_check}
| sort availability asc

The raw response looks like this:

{
  "records": [
     {
      "dt.entity.http_check": "HTTP_CHECK-D1DF6416D98DF200",
      "monitor_name": "HTTP monitor",
      "availability": 0
    },
    {
      "dt.entity.http_check": "HTTP_CHECK-DD85DA9C14659614",
      "monitor_name": "HTTP monitor2",
      "availability": 31.746031746031743
    },
    {
      "dt.entity.http_check": "HTTP_CHECK-ADA43EC2FFF9115D",
      "monitor_name": "HTTP monitor3",
      "availability": 46.03174603174603
    },
    {
      "dt.entity.http_check": "HTTP_CHECK-0135CB5835BEAEA8",
      "monitor_name": "HTTP monitor4",
      "availability": 100
    },

Identify the most problematic locations

Suppose you need to identify the locations with the lowest availability and the slowest average response time for HTTP requests.

The following query uses the dt.synthetic.http.request.duration and dt.synthetic.http.availability metrics and the dt.entity.synthetic_location dimension.

timeseries {
  availability_series = avg(dt.synthetic.http.availability),
  performance_series = avg(dt.synthetic.http.request.duration) },
by:{ dt.entity.synthetic_location }
| fieldsAdd location_name = entityName(dt.entity.synthetic_location)
| summarize { location_name = takeFirst(location_name),
              availability =  avg(arrayAvg((availability_series))),
              request_duration = avg(arrayAvg(performance_series))},
            by: {dt.entity.synthetic_location}
| sort availability asc, request_duration desc

The raw response looks like this:

{
  {
  "records": [
    {
      "dt.entity.synthetic_location": "SYNTHETIC_LOCATION-00000000000003B3",
      "location_name": "Las Vegas",
      "availability": 23.809523809523807,
      "request_duration": 2662.3457875457875
    },
    {
      "dt.entity.synthetic_location": "SYNTHETIC_LOCATION-0000000000000004",
      "location_name": "Amazon US East (N. Virginia)",
      "availability": 60.714285714285715,
      "request_duration": 1297.4880952380952
    },
    {
      "dt.entity.synthetic_location": "SYNTHETIC_LOCATION-2D4A33F9E13D70E7",
      "location_name": "Oslo",
      "availability": 66.66666666666667,
      "request_duration": 1114.1904761904761
    },
    {
      "dt.entity.synthetic_location": "SYNTHETIC_LOCATION-0000000000000064",
      "location_name": "Gdańsk",
      "availability": 70,
      "request_duration": 294.2772881374772
    },
    {
      "dt.entity.synthetic_location": "SYNTHETIC_LOCATION-9FFF47C604374908",
      "location_name": "Dublin",
      "availability": 72.06349206349208,
      "request_duration": 1146.2952380952381
    },

Identify status codes retrieved during test executions

Suppose you need to identify the error status codes (>= 400) retrieved during test executions.

The following query uses the dt.synthetic.http.executions metric and the result.http_status.code dimension.

timeseries {
  execution_series = sum(dt.synthetic.http.executions)
}, by:{ result.http_status.code }
| filter result.http_status.code >= 400
| summarize { executions = sum(execution_series[]),
              status.code = toString(takeFirst(result.http_status.code)) },
            by: { timeframe, interval, result.http_status.code}

The visualized response looks like this:

(Cut) Metrics_Error codes for HTTP monitors
(Cut) Metrics_Error codes for HTTP monitors
Related tags
Digital Experience