KBM Nexus Flight Service
Operations analysis

← All synthetic requests

Request R-0715

One synthetic request to the briefing service. It is a request, not a call: nothing here says which call it belonged to, or whether it was part of one.

What this request was

Synthetic
Summary
Started (synthetic)Tue 06 Jan 21:31 UTC
TypeBriefing
OutcomeCompleted
Preparation time7.4 s
Sections with a skipped lookupNone
Stored-copy checks2 of 6 found a stored copy

What happened, in order

Synthetic

Times are after the request began, on the service host. Lookups run in groups; the times are for the group.

  1. +0.00 sRequest received
  2. +0.00 sLookup started: Airport lookup
  3. +0.38 sLookup finished: Airport lookup (0.38 s)
  4. +0.38 sLookup started: Current weather reports
  5. +1.26 sStored copy found: Winds aloft table
  6. +1.26 sLookup finished: Current weather reports (0.88 s)
  7. +1.26 sNo stored copy, a lookup was needed: Significant weather advisories
  8. +1.26 sNo stored copy, a lookup was needed: Graphical AIRMETs
  9. +1.26 sNo stored copy, a lookup was needed: Center weather advisories
  10. +1.26 sLookup started: Hazards and pilot reports
  11. +4.82 sLookup finished: Hazards and pilot reports (3.56 s)
  12. +4.82 sLookup started: Weather reports along the route
  13. +5.98 sNo stored copy, a lookup was needed: TFR list
  14. +5.98 sLookup finished: Weather reports along the route (1.16 s)
  15. +5.98 sLookup started: TFR list
  16. +7.33 sStored copy found: TFR details
  17. +7.33 sLookup finished: TFR list (1.35 s)
  18. +7.38 sBriefing request finished

Briefing sections

Synthetic
What the lookups behind each section did
SectionLookup stateBasis
Hazards and pilot reportsLookup completedno stored copies; Hazards and pilot reports completed
Departure and arrival weatherLookup completedAirport lookup completed; Current weather reports completed
Weather along the routeLookup completedWeather reports along the route completed
Winds aloftLookup completedstored copy found; no lookup needed
Temporary flight restrictions (TFRs)Lookup completedstored copy found for 1 of 2; TFR list completed
NOTAMsPlaceholder, not live data
Special use airspaceNot checked: no data source
"Lookup completed" says the request finished that lookup. It does not say the content was right, that it was current, or that a caller heard it; none of those is in this data. A skipped lookup means part of a section was not checked, not necessarily that the whole section is absent.

Where the time went

Synthetic

Total preparation time 7.4 s. The service's own processing only.

What the rule said at the 1-second mark

Synthetic Predicted

In the training period: used to fit the rule, not scored.

Evidence

Synthetic

What the caller heard

Not measured

Not measured. This timing ends when the service finishes its work. It leaves out the telephone connection, speech recognition and speech synthesis, so it is not how long anyone waited or what they heard.

Engineering details: record, cutoff check and synthetic truth
Record
Request number715
Prediction setIn the training period: used to fit the rule, not scored (train)
Record ID00000000000002cb
Outcome readable fromTue 06 Jan 21:45:30 UTC
What the synthetic world knowsobserved (known only because the data is synthetic)

Cutoff check: what was known 1,000 ms in

Every field of the record, and whether it was available at the cutoff
FieldValueAt the cutoff
schemafs.telemetry.request.v0excluded: meta field, never a feature
scopeserver_requestexcluded: meta field, never a feature
request_id00000000000002cbexcluded: meta field, never a feature
event_time_utc2026-01-06T21:31:20.159Zincluded: known when the request began
record_assembled_at_utc2026-01-06T21:31:27.539Zexcluded: meta field, never a feature
truncatedfalseexcluded: meta field, never a feature
clock.durationshrtime_monotonicexcluded: meta field, never a feature
clock.wallsystem_utcexcluded: meta field, never a feature
clock.budget_clock_skew_ms0.2excluded: meta field, never a feature
clock.pre_script_wall_ms3excluded: meta field, never a feature
request.actionbriefingincluded: known when the request began
request.channel_hintnoneincluded: known when the request began
request.purposestandardincluded: known when the request began
stages[].stageidents_resolvedincluded: observed at 379.0 ms, at or before the 1,000 ms cutoff
stages[].at_ms378.991included: observed at 379.0 ms, at or before the 1,000 ms cutoff
stages[].stageendpoints_fetchedexcluded: observed at 1,255.2 ms, after the 1,000 ms cutoff
stages[].at_ms1255.208excluded: observed at 1,255.2 ms, after the 1,000 ms cutoff
stages[].stagehazards_doneexcluded: observed at 4,821.4 ms, after the 1,000 ms cutoff
stages[].at_ms4821.419excluded: observed at 4,821.4 ms, after the 1,000 ms cutoff
stages[].stageroute_weather_doneexcluded: observed at 5,978.3 ms, after the 1,000 ms cutoff
stages[].at_ms5978.266excluded: observed at 5,978.3 ms, after the 1,000 ms cutoff
stages[].stagetfrs_doneexcluded: observed at 7,332.0 ms, after the 1,000 ms cutoff
stages[].at_ms7331.958excluded: observed at 7,332.0 ms, after the 1,000 ms cutoff
stages[].stageresponse_builtexcluded: observed at 7,377.8 ms, after the 1,000 ms cutoff
stages[].at_ms7377.79excluded: observed at 7,377.8 ms, after the 1,000 ms cutoff
cache[].sourcewinds.fb_tableexcluded: observed at 1,255.2 ms, after the 1,000 ms cutoff
cache[].ttl_s3600excluded: observed at 1,255.2 ms, after the 1,000 ms cutoff
cache[].hittrueexcluded: observed at 1,255.2 ms, after the 1,000 ms cutoff
cache[].at_ms1255.208excluded: observed at 1,255.2 ms, after the 1,000 ms cutoff
cache[].sourcenoaa.airsigmetexcluded: observed at 1,255.6 ms, after the 1,000 ms cutoff
cache[].ttl_s180excluded: observed at 1,255.6 ms, after the 1,000 ms cutoff
cache[].hitfalseexcluded: observed at 1,255.6 ms, after the 1,000 ms cutoff
cache[].at_ms1255.608excluded: observed at 1,255.6 ms, after the 1,000 ms cutoff
cache[].sourcenoaa.gairmetexcluded: observed at 1,256.0 ms, after the 1,000 ms cutoff
cache[].ttl_s180excluded: observed at 1,256.0 ms, after the 1,000 ms cutoff
cache[].hitfalseexcluded: observed at 1,256.0 ms, after the 1,000 ms cutoff
cache[].at_ms1256.008excluded: observed at 1,256.0 ms, after the 1,000 ms cutoff
cache[].sourcenoaa.cwaexcluded: observed at 1,256.4 ms, after the 1,000 ms cutoff
cache[].ttl_s180excluded: observed at 1,256.4 ms, after the 1,000 ms cutoff
cache[].hitfalseexcluded: observed at 1,256.4 ms, after the 1,000 ms cutoff
cache[].at_ms1256.408excluded: observed at 1,256.4 ms, after the 1,000 ms cutoff
cache[].sourcefaa.tfr_listexcluded: observed at 5,978.3 ms, after the 1,000 ms cutoff
cache[].ttl_s600excluded: observed at 5,978.3 ms, after the 1,000 ms cutoff
cache[].hitfalseexcluded: observed at 5,978.3 ms, after the 1,000 ms cutoff
cache[].at_ms5978.266excluded: observed at 5,978.3 ms, after the 1,000 ms cutoff
cache[].sourcefaa.tfr_detailexcluded: observed at 7,331.6 ms, after the 1,000 ms cutoff
cache[].ttl_s1800excluded: observed at 7,331.6 ms, after the 1,000 ms cutoff
cache[].hittrueexcluded: observed at 7,331.6 ms, after the 1,000 ms cutoff
cache[].at_ms7331.558excluded: observed at 7,331.6 ms, after the 1,000 ms cutoff
fetch_groups[].seq0excluded: meta field, never a feature
fetch_groups[].start_ms2included: observed at 2.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].n_urls1included: observed at 2.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].retry_allowedtrueincluded: observed at 2.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].retry_passfalseincluded: observed at 2.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].cap_ms8000included: observed at 2.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].budget_left_before_ms14998included: observed at 2.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].skipped_for_budgetfalseexcluded: outcome field, never a feature
fetch_groups[].end_ms378.991excluded: outcome field, never a feature
fetch_groups[].dur_ms376.991excluded: outcome field, never a feature
fetch_groups[].sources.*.n1excluded: outcome field, never a feature
fetch_groups[].sources.*.ok1excluded: outcome field, never a feature
fetch_groups[].sources.*.failed0excluded: outcome field, never a feature
fetch_groups[].sources.*.max_curl_ms365.7excluded: outcome field, never a feature
fetch_groups[].seq1excluded: meta field, never a feature
fetch_groups[].start_ms378.991included: observed at 379.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].n_urls4included: observed at 379.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].retry_allowedtrueincluded: observed at 379.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].retry_passfalseincluded: observed at 379.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].cap_ms8000included: observed at 379.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].budget_left_before_ms14621included: observed at 379.0 ms, at or before the 1,000 ms cutoff
fetch_groups[].skipped_for_budgetfalseexcluded: outcome field, never a feature
fetch_groups[].end_ms1255.208excluded: outcome field, never a feature
fetch_groups[].dur_ms876.217excluded: outcome field, never a feature
fetch_groups[].sources.*.n4excluded: outcome field, never a feature
fetch_groups[].sources.*.ok4excluded: outcome field, never a feature
fetch_groups[].sources.*.failed0excluded: outcome field, never a feature
fetch_groups[].sources.*.max_curl_ms849.9excluded: outcome field, never a feature
fetch_groups[].seq2excluded: meta field, never a feature
fetch_groups[].start_ms1256.808excluded: observed at 1,256.8 ms, after the 1,000 ms cutoff
fetch_groups[].n_urls4excluded: observed at 1,256.8 ms, after the 1,000 ms cutoff
fetch_groups[].retry_allowedtrueexcluded: observed at 1,256.8 ms, after the 1,000 ms cutoff
fetch_groups[].retry_passfalseexcluded: observed at 1,256.8 ms, after the 1,000 ms cutoff
fetch_groups[].cap_ms8000excluded: observed at 1,256.8 ms, after the 1,000 ms cutoff
fetch_groups[].budget_left_before_ms13743.2excluded: observed at 1,256.8 ms, after the 1,000 ms cutoff
fetch_groups[].skipped_for_budgetfalseexcluded: outcome field, never a feature
fetch_groups[].end_ms4821.419excluded: outcome field, never a feature
fetch_groups[].dur_ms3564.611excluded: outcome field, never a feature
fetch_groups[].sources.*.n4excluded: outcome field, never a feature
fetch_groups[].sources.*.ok4excluded: outcome field, never a feature
fetch_groups[].sources.*.failed0excluded: outcome field, never a feature
fetch_groups[].sources.*.max_curl_ms3457.7excluded: outcome field, never a feature
fetch_groups[].seq3excluded: meta field, never a feature
fetch_groups[].start_ms4821.419excluded: observed at 4,821.4 ms, after the 1,000 ms cutoff
fetch_groups[].n_urls3excluded: observed at 4,821.4 ms, after the 1,000 ms cutoff
fetch_groups[].retry_allowedtrueexcluded: observed at 4,821.4 ms, after the 1,000 ms cutoff
fetch_groups[].retry_passfalseexcluded: observed at 4,821.4 ms, after the 1,000 ms cutoff
fetch_groups[].cap_ms8000excluded: observed at 4,821.4 ms, after the 1,000 ms cutoff
fetch_groups[].budget_left_before_ms10178.6excluded: observed at 4,821.4 ms, after the 1,000 ms cutoff
fetch_groups[].skipped_for_budgetfalseexcluded: outcome field, never a feature
fetch_groups[].end_ms5978.266excluded: outcome field, never a feature
fetch_groups[].dur_ms1156.847excluded: outcome field, never a feature
fetch_groups[].sources.*.n3excluded: outcome field, never a feature
fetch_groups[].sources.*.ok3excluded: outcome field, never a feature
fetch_groups[].sources.*.failed0excluded: outcome field, never a feature
fetch_groups[].sources.*.max_curl_ms1122.1excluded: outcome field, never a feature
fetch_groups[].seq4excluded: meta field, never a feature
fetch_groups[].start_ms5978.666excluded: observed at 5,978.7 ms, after the 1,000 ms cutoff
fetch_groups[].n_urls1excluded: observed at 5,978.7 ms, after the 1,000 ms cutoff
fetch_groups[].retry_allowedtrueexcluded: observed at 5,978.7 ms, after the 1,000 ms cutoff
fetch_groups[].retry_passfalseexcluded: observed at 5,978.7 ms, after the 1,000 ms cutoff
fetch_groups[].cap_ms8000excluded: observed at 5,978.7 ms, after the 1,000 ms cutoff
fetch_groups[].budget_left_before_ms9021.3excluded: observed at 5,978.7 ms, after the 1,000 ms cutoff
fetch_groups[].skipped_for_budgetfalseexcluded: outcome field, never a feature
fetch_groups[].end_ms7331.558excluded: outcome field, never a feature
fetch_groups[].dur_ms1352.892excluded: outcome field, never a feature
fetch_groups[].sources.*.n1excluded: outcome field, never a feature
fetch_groups[].sources.*.ok1excluded: outcome field, never a feature
fetch_groups[].sources.*.failed0excluded: outcome field, never a feature
fetch_groups[].sources.*.max_curl_ms1312.3excluded: outcome field, never a feature
budget.budget_ms15000excluded: meta field, never a feature
budget.left_at_end_ms7622.2excluded: outcome field, never a feature
budget.out_of_time_at_endfalseexcluded: outcome field, never a feature
budget.groups_skipped0excluded: outcome field, never a feature
server.http_status200excluded: outcome field, never a feature
server.script_end_ms7377.79excluded: outcome field, never a feature
server.handoffflushexcluded: meta field, never a feature
server.handoff_ms7378.09excluded: outcome field, never a feature

The record as stored (synthetic)

{
    "schema": "fs.telemetry.request.v0",
    "scope": "server_request",
    "request_id": "00000000000002cb",
    "event_time_utc": "2026-01-06T21:31:20.159Z",
    "record_assembled_at_utc": "2026-01-06T21:31:27.539Z",
    "truncated": false,
    "clock": {
        "durations": "hrtime_monotonic",
        "wall": "system_utc",
        "budget_clock_skew_ms": 0.2,
        "pre_script_wall_ms": 3
    },
    "request": {
        "action": "briefing",
        "channel_hint": "none",
        "purpose": "standard"
    },
    "stages": [
        {
            "stage": "idents_resolved",
            "at_ms": 378.991
        },
        {
            "stage": "endpoints_fetched",
            "at_ms": 1255.208
        },
        {
            "stage": "hazards_done",
            "at_ms": 4821.419
        },
        {
            "stage": "route_weather_done",
            "at_ms": 5978.266
        },
        {
            "stage": "tfrs_done",
            "at_ms": 7331.958
        },
        {
            "stage": "response_built",
            "at_ms": 7377.79
        }
    ],
    "cache": [
        {
            "source": "winds.fb_table",
            "ttl_s": 3600,
            "hit": true,
            "at_ms": 1255.208
        },
        {
            "source": "noaa.airsigmet",
            "ttl_s": 180,
            "hit": false,
            "at_ms": 1255.608
        },
        {
            "source": "noaa.gairmet",
            "ttl_s": 180,
            "hit": false,
            "at_ms": 1256.008
        },
        {
            "source": "noaa.cwa",
            "ttl_s": 180,
            "hit": false,
            "at_ms": 1256.408
        },
        {
            "source": "faa.tfr_list",
            "ttl_s": 600,
            "hit": false,
            "at_ms": 5978.266
        },
        {
            "source": "faa.tfr_detail",
            "ttl_s": 1800,
            "hit": true,
            "at_ms": 7331.558
        }
    ],
    "fetch_groups": [
        {
            "seq": 0,
            "start_ms": 2,
            "n_urls": 1,
            "retry_allowed": true,
            "retry_pass": false,
            "cap_ms": 8000,
            "budget_left_before_ms": 14998,
            "skipped_for_budget": false,
            "end_ms": 378.991,
            "dur_ms": 376.991,
            "sources": {
                "noaa.airport": {
                    "n": 1,
                    "ok": 1,
                    "failed": 0,
                    "max_curl_ms": 365.7
                }
            }
        },
        {
            "seq": 1,
            "start_ms": 378.991,
            "n_urls": 4,
            "retry_allowed": true,
            "retry_pass": false,
            "cap_ms": 8000,
            "budget_left_before_ms": 14621,
            "skipped_for_budget": false,
            "end_ms": 1255.208,
            "dur_ms": 876.217,
            "sources": {
                "noaa.metar": {
                    "n": 4,
                    "ok": 4,
                    "failed": 0,
                    "max_curl_ms": 849.9
                }
            }
        },
        {
            "seq": 2,
            "start_ms": 1256.808,
            "n_urls": 4,
            "retry_allowed": true,
            "retry_pass": false,
            "cap_ms": 8000,
            "budget_left_before_ms": 13743.2,
            "skipped_for_budget": false,
            "end_ms": 4821.419,
            "dur_ms": 3564.611,
            "sources": {
                "noaa.pirep": {
                    "n": 4,
                    "ok": 4,
                    "failed": 0,
                    "max_curl_ms": 3457.7
                }
            }
        },
        {
            "seq": 3,
            "start_ms": 4821.419,
            "n_urls": 3,
            "retry_allowed": true,
            "retry_pass": false,
            "cap_ms": 8000,
            "budget_left_before_ms": 10178.6,
            "skipped_for_budget": false,
            "end_ms": 5978.266,
            "dur_ms": 1156.847,
            "sources": {
                "noaa.metar": {
                    "n": 3,
                    "ok": 3,
                    "failed": 0,
                    "max_curl_ms": 1122.1
                }
            }
        },
        {
            "seq": 4,
            "start_ms": 5978.666,
            "n_urls": 1,
            "retry_allowed": true,
            "retry_pass": false,
            "cap_ms": 8000,
            "budget_left_before_ms": 9021.3,
            "skipped_for_budget": false,
            "end_ms": 7331.558,
            "dur_ms": 1352.892,
            "sources": {
                "faa.tfr_list": {
                    "n": 1,
                    "ok": 1,
                    "failed": 0,
                    "max_curl_ms": 1312.3
                }
            }
        }
    ],
    "budget": {
        "budget_ms": 15000,
        "left_at_end_ms": 7622.2,
        "out_of_time_at_end": false,
        "groups_skipped": 0
    },
    "server": {
        "http_status": 200,
        "script_end_ms": 7377.79,
        "handoff": "flush",
        "handoff_ms": 7378.09
    }
}