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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 :: XPConnect'
performance.clone.deserialize:
size:
description: >
Size of deserialized data, in bytes
type: memory_distribution
memory_unit: byte
bugs:
data_reviews:
notification_emails:
- sfink@mozilla.com
expires: never
items:
description: >
Size of deserialized data, in items
type: custom_distribution
unit: Serialized items
histogram_type: exponential
range_max: 2147483646
bucket_count: 50
bugs:
data_reviews:
notification_emails:
- sfink@mozilla.com
expires: never
time:
description: >
Time spent deserializing structured data
type: timing_distribution
time_unit: microsecond
bugs:
data_reviews:
notification_emails:
- sfink@mozilla.com
expires: never
javascript.ion:
compile_time:
type: timing_distribution
time_unit: microsecond
description: >
Time in microseconds of an Ion compilation.
bugs:
data_reviews:
notification_emails:
- dpalmeiro@mozilla.com
- perf-telemetry-alerts@mozilla.com
expires: never
javascript.gc:
total_time:
type: timing_distribution
time_unit: millisecond
description: >
The total time taken by a major collection.
(Migrated from the geckoview metric of the same name.)
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
minor_time:
type: timing_distribution
time_unit: microsecond
description: >
The time taked by a minor (nursery) collection.
(Migrated from the geckoview metric of the same name.)
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
prepare_time:
type: timing_distribution
time_unit: millisecond
description: >
The time spent in the preparation phase.
(Migrated from the geckoview metric of the same name.)
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
mark_roots_time:
type: timing_distribution
time_unit: microsecond
description: >
The time spent marking GC roots.
(Migrated from the geckoview metric of the same name.)
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
mark_time:
type: timing_distribution
time_unit: millisecond
description: >
The time spent in the mark phase.
(Migrated from the geckoview metric of the same name.)
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
sweep_time:
type: timing_distribution
time_unit: millisecond
description: >
The time spent in the sweep phase.
(Migrated from the geckoview metric of the same name.)
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
compact_time:
type: timing_distribution
time_unit: millisecond
description: >
The time spent in the compact phase.
(Migrated from the geckoview metric of the same name.)
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
slice_time:
type: timing_distribution
time_unit: millisecond
description: >
The time spent running a GC slice.
(Migrated from the geckoview metric of the same name.)
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
budget:
type: timing_distribution
time_unit: millisecond
description: >
Requested GC slice budget.
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
budget_overrun:
type: timing_distribution
time_unit: microsecond
description: >
How long a GC slice ran over its budget.
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
animation:
type: timing_distribution
time_unit: millisecond
description: >
Time spent running JS GC when animating.
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
max_pause:
type: timing_distribution
time_unit: millisecond
description: >
Longest GC slice in a GC.
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
mark_gray:
type: timing_distribution
time_unit: millisecond
description: >
Time spent marking gray GC objects.
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
mark_weak:
type: timing_distribution
time_unit: millisecond
description: >
Time spent marking GC objects held live through weakmaps.
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
time_between:
type: timing_distribution
time_unit: second
description: >
Time spent in between garbage collections for the main runtime.
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
time_between_slices:
type: timing_distribution
time_unit: millisecond
description: >
Time spent in between garbage collections for the main runtime.
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
task_start_delay:
type: timing_distribution
time_unit: microsecond
description: >
Delay between queuing a GC task and the task starting.
bugs:
data_reviews:
notification_emails:
- dev-telemetry-gc-alerts@mozilla.org
- jcoppeard@mozilla.com
expires: never
slow_script_warning:
shown_browser:
type: event
description: >
Recorded when a slow script hang is resolved.
This event was generated to correspond to the Legacy Telemetry event
slow_script_warning.shown#browser.
bugs: &slow_script_warning_shown_bugs
data_reviews: &slow_script_warning_shown_data_reviews
notification_emails: &slow_script_warning_shown_emails
- dothayer@mozilla.com
- esmyth@mozilla.com
- gkruitbosch@mozilla.com
- perf-telemetry-alerts@mozilla.com
expires: never
extra_keys:
hang_duration:
description: >
How long we believe the hang continued (ms).
type: string
uri_type:
description: >
The kind of script URL that hung.
type: string
telemetry_mirror: Slow_script_warning_Shown_Browser
shown_content:
type: event
description: >
Recorded when a slow script hang is resolved.
This event was generated to correspond to the Legacy Telemetry event
slow_script_warning.shown#content.
bugs: *slow_script_warning_shown_bugs
data_reviews: *slow_script_warning_shown_data_reviews
notification_emails: *slow_script_warning_shown_emails
expires: never
extra_keys:
end_reason:
description: >
Why the warning was hidden (user action, the process becoming responsive again, the browser quitting, etc.)
type: string
wait_count:
description: >
How many times the user elected to wait.
type: quantity
hang_duration:
description: >
How long we believe the hang continued (ms).
type: string
n_tab_deselect:
description: >
How many times the user switched away from a tab affected by this hang.
type: quantity
uri_type:
description: >
The kind of script URL that hung.
type: string
uptime:
description: >
How long the notification was up (ms).
type: string
telemetry_mirror: Slow_script_warning_Shown_Content
no_lint:
- COMMON_PREFIX
script.preloader:
mainthread_recompile:
type: counter
description: >
How many times we ended up recompiling a script from the script
preloader on the main thread.
This metric was generated to correspond to the Legacy Telemetry
scalar script.preloader.mainthread_recompile.
bugs:
data_reviews:
notification_emails:
- dothayer@mozilla.com
- plawless@mozilla.com
expires: never
telemetry_mirror: SCRIPT_PRELOADER_MAINTHREAD_RECOMPILE