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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# Adding a new metric? We have docs for that!
---
$tags:
- 'Core :: Storage: localStorage & sessionStorage'
localstorage.request:
prepare_datastore_processing_time:
type: timing_distribution
time_unit: microsecond
description: >
Measures the time taken by the parent process to prepare a datastore.
This duration can be significantly affected by datastore preloading,
which is triggered when a page begins to load. When a datastore is
already preloaded, preparation is usually fast since no additional I/O
is required. If an error occurs, the time is not recorded.
In the future, we may introduce separate metrics to distinguish between
different types of datastore preparations (e.g., loading data from disk
vs. using preloaded data).
bugs:
data_reviews:
data_sensitivity:
- technical
notification_emails:
- hsingh@mozilla.com
- jvarga@mozilla.com
- storage-telemetry@mozilla.com
expires: never
send_cancel_counter:
type: counter
description: >
Increments whenever a request cancellation message is successfully sent.
This includes cancellations for requests related to either databases or
observers.
bugs:
data_reviews:
data_sensitivity:
- technical
notification_emails:
- hsingh@mozilla.com
- jvarga@mozilla.com
expires: never
recv_cancel_counter:
type: counter
description: >
Increments whenever a request cancellation message is successfully
received. This includes cancellations for requests related to either
databases or observers.
bugs:
data_reviews:
data_sensitivity:
- technical
notification_emails:
- hsingh@mozilla.com
- jvarga@mozilla.com
- storage-telemetry@mozilla.com
expires: never
localstorage.database:
new_object_setup_time:
type: timing_distribution
time_unit: microsecond
description: >
Measures the time taken for the content process to fully set up a new
database, including any time required for datastore preparation in the
parent process. This duration can be significantly affected by datastore
preloading, which is triggered when a page begins loading. If an error
occurs, the time is not recorded.
bugs:
data_reviews:
data_sensitivity:
- technical
notification_emails:
- hsingh@mozilla.com
- jvarga@mozilla.com
- storage-telemetry@mozilla.com
expires: never
request_allow_to_close_response_time:
type: timing_distribution
time_unit: microsecond
description: >
Time it took between sending PBackgroundLSDatabase::RequestAllowToClose
and receiving PBackgroundLSDatabase::AllowToClose message. These messages
are issued when QuotaManager is shutting down or is aborting operations
for a particular origin or process.
bugs:
data_reviews:
data_sensitivity:
- technical
notification_emails:
- jvarga@mozilla.com
- storage-telemetry@mozilla.com
expires: 142