Enabling interview engine tier (mrIEngWS) metrics
The Interview Engine Tier Metrics are accessed from the following URL:
http://<hostname>/mrIEngWS/mrIEngWS.dll?Handler=Metrics
No configuration is required: the metrics are always collected, and the metrics endpoint is always available.
No authentication is required, because the interview engine tier is not normally publicly accessible.
The interview engine tier supports the same system, process, and request metrics as the interview web tier.
The metrics returned by mrIEngWS include the Windows performance counters, which are described in
Monitoring performance counters.
Metrics relating to interviews, interviewers, and supervisors
interviewers
(Gauge.) The number of interviewers who are signed in.
interviews
(Gauge.) The number of interviews that are currently running.
interviews_completed_total
(Counter.) Total number of interviews that have been completed or stopped.
interviews_errored_total
(Counter.) Total number of requests that resulted in an error response.
interviews_failover_restarted_total
(Counter.) Total restarts caused by failover.
interviews_restarted_total
(Counter.) Total number of interviews that have been restarted.
interviews_started_total
(Counter.) Total number of interviews that have been started.
interviews_timedout_total
(Counter.) Total number of interview timeouts.
last_percent_loaded
(Gauge.) The last percentage loaded value.
pages_requested_total
(Counter.) Total number of page‑to‑page requests.
supervisors
(Gauge.) The number of supervisors who are signed in.
Metrics relating to the interview subscription cached used by the engine
cache_subscriptions
(Gauge.) The total number of cache files found on the last scan.
cache_transfer_failed_total
(Counter.) Total Failed Transfers
cache_transfer_queue_length
(Gauge.) The number of cache subscriptions waiting to be transferred to the database
cache_transfer_retry_queue_length
(Gauge.) The number of cache subscriptions that previously failing to transfer successfully that are waiting to be retried.
cache_transferred_total
(Counter.) The total number of cache subscriptions transferred to the database
Per-project metrics
To get the per-project metrics, include an IncludeProjectMetrics=True parameter when requesting the metrics.
Each of the following metrics is labeled with the project name.
interviewers
(Gauge.) Current number of telephone interviewers.
interviewers_waiting
(Gauge.) Current number of telephone interviewers waiting.
telephone_auto_dial_duration_seconds
(Summary.) Telephone auto dial duration when successfully get a sample.
telephone_auto_dial_fail_duration_seconds
(Summary.) Telephone auto dial duration when not successful in getting a sample.
telephone_interview_start_duration_seconds
(Summary.) Telephone interview start processing duration.
telephone_interview_page_duration_seconds
(Summary.) Telephone interview page to page processing duration.
telephone_interview_end_duration_seconds
(Summary.) Telephone interview end processing duration.
telephone_interviews
(Gauge.) Current number of telephone interviews.
telephone_interviews_total
(Counter.) Total number of telephone interviews that have started.
telephone_manual_dial_duration_seconds
(Summary.) Telephone manual dial duration when successfully getting a sample.
telephone_manual_dial_fail_duration_seconds
(Summary.) Telephone manual dial duration when not successful in getting a sample.
telephone_sample_return_duration_seconds
(Summary.) Telephone return sample processing duration.
supervisors
(Gauge.) Current number of supervisors.
web_interview_end_duration_seconds
(Summary.) Web interview end processing duration.
web_interview_page_duration_seconds
(Summary.) Web interview page to page processing duration.
web_interview_start_duration_seconds
(Summary.) Web interview start processing duration.
web_interviews
(Gauge.) Number of current web interviews.
web_interviews_total
(Counter.) Total number of web interviews that have started.
web_sample_authenticate_duration_seconds
(Summary.) Web authenticate sample processing duration.
web_sample_return_duration_seconds
(Summary.) Web return sample processing duration.
See