andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com The number of events that are dropped when processing External Metrics. Events are dropped once a threshold, 50 by default, is reached. This field is only recorded when recording is enabled. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com Logged during StructuredMetricsService initialization whether the init task or the initial log timer completed first. The expectation is the vast majority of the time, the init task should complete first. If metrics show otherwise, then it may indicate there's a bug in the StructuredMetricsService init sequence and that it should be investigated. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com The compression ratio of Structured Metrics logs. Recorded when logs are stored. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com The number of logs dropped for exceeding the log size constraints. Recorded when trimming the logs is complete and when the remaining logs is less then the original logs. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com The size in KB of logs trimmed by log storage for being too large. Recorded when trimming the log and the compressed size of a log exceeds the max log size. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com The actual interval between log upload start and previous log upload finished within the same process. A value of 0 indicates there was no previous upload. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com HTTP and network errors encountered by Structured Metrics when attempting to upload logs to the server through an HTTPS connection. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com HTTP response codes encountered by Structured Metrics when attempting to upload logs to the server through an HTTPS connection. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com Size in kilobytes (after compression) of an uploaded Structured Metrics log. Recorded after a successful Structured Metrics upload. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com Size in kilobytes (after compression) of a log rejected for being to large. andrewbregger@google.com jongahn@google.com chromeos-data-eng@google.com chrome-metrics-team@google.com The serialized size in bytes of the Structured Metrics payload attached to UMA. This correlates to the amount of memory Structured Metrics uses during an upload by UMA.