first_shutdown_summary table is a summary of the
Ping latency was reduced through the shutdown ping-sender mechanism in Firefox 55. To maintain consistent historical behavior, the first main ping is not sent until the second start up. In Firefox 57, a separate first-shutdown ping was created to evaluate first-shutdown behavior while maintaining backwards compatibility.
In many cases, the first-shutdown ping is a duplicate of the main ping. The first-shutdown summary can be used in conjunction with the main summary by taking the union and deduplicating on the
The data can be accessed as
first_shutdown_summary. It is currently stored in the following path.
The data is backfilled to 2017-09-22, the date of its first nightly appearance. This data should be available to all releases on and after Firefox 57.
This dataset is generated by telemetry-batch-view.