| <!-- |
| Copyright 2020 The Chromium Authors. All rights reserved. |
| Use of this source code is governed by a BSD-style license that can be |
| found in the LICENSE file. |
| --> |
| |
| <!-- |
| This file is used to generate a comprehensive list of Startup histograms |
| along with a detailed description for each histogram. |
| |
| For best practices on writing histogram descriptions, see |
| https://chromium.googlesource.com/chromium/src.git/+/HEAD/tools/metrics/histograms/README.md |
| |
| Please send CLs to chromium-metrics-reviews@google.com rather than to specific |
| individuals. These CLs will be automatically reassigned to a reviewer within |
| about 5 minutes. This approach helps the metrics team to load-balance incoming |
| reviews. Googlers can read more about this at go/gwsq-gerrit. |
| --> |
| |
| <histogram-configuration> |
| |
| <histograms> |
| |
| <histogram name="Startup.AfterStartupTaskCount" units="units" |
| expires_after="2021-09-05"> |
| <owner>michaeln@chromium.org</owner> |
| <summary> |
| The number of after-startup tasks that were queued prior to startup |
| completion and deferred until that time. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.AfterStartupTaskDelayedUntilTime" units="ms" |
| expires_after="2021-09-19"> |
| <owner>michaeln@chromium.org</owner> |
| <summary> |
| Time from the process creation until deferred after-startup tasks began |
| running. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.CachedFeedVisibilityConsistency" |
| enum="BooleanConsistent" expires_after="2021-08-09"> |
| <owner>hanxi@chromium.org</owner> |
| <owner>spdonghao@chromium.org</owner> |
| <owner>wychen@chromium.org</owner> |
| <summary> |
| Records whether or not the cached Feed visibility in the SharedPreferences |
| is consistent with the Feed visibility user preference on the disk. It's |
| recorded when overview mode is shown because of Return to Tab Switcher, and |
| only on cold start. By recording this histogram, the number of mismatches |
| between the criteria of whether the Feed placeholder of Instant Start |
| pre-native is shown and the criteria of whether Feed articles after native |
| initialization are shown is recorded. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.ChromeTabbedTaskExistsTime" units="ms" |
| expires_after="2021-09-19"> |
| <owner>mthiesse@chromium.org</owner> |
| <owner>yfriedman@chromium.org</owner> |
| <summary> |
| Measures the amount of time it takes to check if a ChromeTabbedActivity task |
| already exists during startup. |
| </summary> |
| </histogram> |
| |
| <histogram base="true" name="Startup.Android.Cold.TimeToFirstContentfulPaint" |
| units="ms" expires_after="2021-09-12"> |
| <owner>pasko@chromium.org</owner> |
| <owner>alexilin@chromium.org</owner> |
| <summary> |
| Android: The time from the activity creation point to the first contentful |
| paint of the first loaded page. It's not recorded when the first loaded page |
| is non http(s) page like a chrome error page, a new tab page, a blank page. |
| It's also not recorded if the application wasn't in the foreground since the |
| start till the end of event. |
| </summary> |
| </histogram> |
| |
| <histogram base="true" name="Startup.Android.Cold.TimeToFirstNavigationCommit" |
| units="ms" expires_after="2021-09-12"> |
| <owner>pasko@chromium.org</owner> |
| <owner>alexilin@chromium.org</owner> |
| <summary> |
| Android: The time from the activity creation point to the moment the first |
| navigation is committed, i.e. when renderer gets the first byte of the |
| document. It's not recorded when the first loaded page is non http(s) page |
| like a chrome error page, a new tab page, a blank page. It's also not |
| recorded if the application wasn't in the foreground since the start till |
| the end of event. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.Cold.TimeToFirstVisibleContent" units="ms" |
| expires_after="2021-08-10"> |
| <owner>yfriedman@chromium.org</owner> |
| <owner>yashard@chromium.org</owner> |
| <summary> |
| The time from the activity creation point to the moment Chrome appears |
| ready. The intent is to reflect Clank's perceived cold start performance |
| regardless of different launch paths. The recorded value is the minimum of |
| 'Startup.Android.Cold.TimeToFirstNavigationCommit.Tabbed' and |
| 'Browser.PaintPreview.TabbedPlayer.TimeToFirstBitmap' metric values. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.Cold.TimeToVisibleContent" units="ms" |
| expires_after="2021-08-29"> |
| <owner>yashard@chromium.org</owner> |
| <owner>ckitagawa@chromium.org</owner> |
| <summary> |
| Android: The time from the activity creation point to the moment the content |
| may first appear ready to a user. The intent is to capture readiness of |
| Chrome regardless of whether Chrome is launched into native UI or a web |
| page. The recorded value is the minimum of |
| 'Startup.Android.Cold.TimeToFirstContentfulPaint.Tabbed' and |
| 'Browser.PaintPreview.TabbedPlayer.TimeToFirstBitmap' metric values. |
| </summary> |
| </histogram> |
| |
| <histogram base="true" name="Startup.Android.FeedContentFirstLoadedTime" |
| units="ms" expires_after="2021-10-04"> |
| <!-- Name completed by histogram_suffixes name="JavaStartMode" --> |
| |
| <owner>hanxi@chromium.org</owner> |
| <owner>spdonghao@chromium.org</owner> |
| <owner>wychen@chromium.org</owner> |
| <summary> |
| Records the time duration from a cold start till the Feeds articles are |
| first loaded on the StartSurface. This histogram is only recorded when |
| StartSurface is shown at launch due to "return to tab switcher" |
| feature. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.FeedsLoadingPlaceholderShown.Instant" |
| units="ms" expires_after="2021-10-10"> |
| <owner>hanxi@chromium.org</owner> |
| <owner>spdonghao@chromium.org</owner> |
| <owner>wychen@chromium.org</owner> |
| <summary> |
| Records the time duration from a cold start till the Feeds loading |
| placeholder is shown on the StartSurface. This placeholder is only shown |
| when the feature flag InstantStart is enabled and StartSurface is shown at |
| launch due to "return to tab switcher" feature. |
| </summary> |
| </histogram> |
| |
| <histogram base="true" name="Startup.Android.FeedStreamCreatedTime" units="ms" |
| expires_after="2021-08-09"> |
| <!-- Name completed by histogram_suffixes name="JavaStartMode" --> |
| |
| <owner>hanxi@chromium.org</owner> |
| <owner>spdonghao@chromium.org</owner> |
| <owner>wychen@chromium.org</owner> |
| <summary> |
| Records the time duration from a cold start till the Feeds stream is created |
| on the StartSurface. This histogram is only recorded when StartSurface is |
| shown at launch due to "return to tab switcher" feature. |
| </summary> |
| </histogram> |
| |
| <histogram base="true" name="Startup.Android.FirstDrawCompletedTime" units="ms" |
| expires_after="2021-10-10"> |
| <!-- Name completed by histogram_suffixes name="JavaStartMode" --> |
| |
| <owner>hanxi@chromium.org</owner> |
| <owner>spdonghao@chromium.org</owner> |
| <owner>wychen@chromium.org</owner> |
| <summary> |
| Records the time duration from a cold start till the first draw completes. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.GURLEnsureMainDexInitialized" units="ms" |
| expires_after="2021-10-10"> |
| <owner>mthiesse@chromium.org</owner> |
| <owner>yfriedman@chromium.org</owner> |
| <summary> |
| Measures the amount of time startup has likely been delayed due to GURL |
| waiting on the native library to be initialized. |
| </summary> |
| </histogram> |
| |
| <histogram base="true" name="Startup.Android.SingleTabTitleAvailableTime" |
| units="ms" expires_after="2021-10-10"> |
| <!-- Name completed by histogram_suffixes name="JavaStartMode" --> |
| |
| <owner>hanxi@chromium.org</owner> |
| <owner>spdonghao@chromium.org</owner> |
| <owner>wychen@chromium.org</owner> |
| <summary> |
| Records the time duration from a cold start till the title of the single Tab |
| is shown on the StartSurface. This histogram is only recorded when |
| StartSurface is shown at launch due to "return to tab switcher" |
| feature. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.StartupTabPreloader.TabLoaded" units="Boolean" |
| expires_after="2021-08-22"> |
| <owner>skyostil@chromium.org</owner> |
| <summary> |
| Android: Whether or not creation of a profile lead to the |
| StartupTabPreloader speculatively created a tab. Recorded when a profile is |
| created, assuming a StartupTabPreloader has been constructed for intents |
| with a url and either regular Chrome or a Custom Tab will be loaded. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.StartupTabPreloader.TabTaken" units="Boolean" |
| expires_after="2020-11-08"> |
| <owner>skyostil@chromium.org</owner> |
| <summary> |
| Android: Whether or not a tab speculatively created by the |
| StartupTabPreloader was subsequently adopted by ChromeTabCreator. Recorded |
| when a tab is loaded, assuming a StartupTabPreloader has been constructed |
| for intents with a url for either regular Chrome or a Custom Tab will be |
| loaded. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.ThumbnailFetchedForGTSFirstMeaningfulPaint" |
| units="thumbnails" expires_after="2020-08-02"> |
| <owner>yusufo@chromium.org</owner> |
| <owner>yfriedman@chromium.org</owner> |
| <summary> |
| Android: The number of thumbnails fetched for the first meaningful paint of |
| the Grid Tab Switcher. First meaningful paint is defined as having all the |
| thumbnails shown. This is recorded at most once per activity lifecycle. This |
| is gated by feature "TabSwitcherOnReturn". |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.TimeToGTSFirstMeaningfulPaint" units="ms" |
| expires_after="2021-08-22"> |
| <owner>yusufo@chromium.org</owner> |
| <owner>yfriedman@chromium.org</owner> |
| <summary> |
| Android: The elapsed time from the activity creation point to the first |
| meaningful paint of the Grid Tab Switcher. First meaningful paint is defined |
| as having all the thumbnails shown. This is recorded at most once per |
| activity lifecycle. This is gated by feature |
| "TabSwitcherOnReturn". |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.TimeToGTSFirstMeaningfulPaint.Cold" units="ms" |
| expires_after="2021-10-04"> |
| <owner>yusufo@chromium.org</owner> |
| <owner>yfriedman@chromium.org</owner> |
| <summary> |
| Android: The elapsed time from the activity creation point to the first |
| meaningful paint of the Grid Tab Switcher. First meaningful paint is defined |
| as having all the thumbnails shown. This is recorded at most once per |
| activity lifecycle. This is gated by feature |
| "TabSwitcherOnReturn". It's only recorded on cold startup. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Android.TimeToGTSFirstMeaningfulPaint.Warm" units="ms" |
| expires_after="2021-08-22"> |
| <owner>yusufo@chromium.org</owner> |
| <owner>yfriedman@chromium.org</owner> |
| <summary> |
| Android: The elapsed time from the activity creation point to the first |
| meaningful paint of the Grid Tab Switcher. First meaningful paint is defined |
| as having all the thumbnails shown. This is recorded at most once per |
| activity lifecycle. This is gated by feature |
| "TabSwitcherOnReturn". It's only recorded on warm startup. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BlockForCrashpadHandlerStartupTime" units="ms" |
| expires_after="M85"> |
| <owner>mark@chromium.org</owner> |
| <owner>crashpad-dev@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed during in |
| crash_report::BlockUntilHandlerStarted(). |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BringToForegroundReason" |
| enum="BooleanBringToForegroundReason" expires_after="2021-09-19"> |
| <owner>peter@chromium.org</owner> |
| <summary> |
| Records the cause, each time Chrome is brought to the foreground. Currently |
| only checks if a NotificationUIManager notification was shown in the last 5 |
| seconds (includes Web Notifications, but not media or Cast). |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserMainRunnerImplInitializeLongTime" units="ms" |
| expires_after="2021-10-04"> |
| <owner>robliao@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed during BrowserMainRunnerImpl::Initialize. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserMainRunnerImplInitializeStep1Time" units="ms" |
| expires_after="M77"> |
| <owner>robliao@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed during the first section of |
| BrowserMainRunnerImpl::Initialize. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserMainRunnerImplInitializeStep2Time" units="ms" |
| expires_after="M77"> |
| <owner>robliao@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed during the second section of |
| BrowserMainRunnerImpl::Initialize. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserMessageLoopStart.To.NonEmptyPaint2" units="ms" |
| expires_after="2021-03-07"> |
| <owner>asvitkine@chromium.org</owner> |
| <summary> |
| Time between Startup.BrowserMessageLoopStartTime and |
| Startup.FirstWebContents.NonEmptyPaint2. Recorded explicitly to allow easy |
| breakdown of Startup.FirstWebContents.NonEmptyPaint2 when diagnosing issues. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserMessageLoopStartHardFaultCount" units="faults" |
| expires_after="never"> |
| <!-- expires-never: calibration metric for StartupTemperature, see |
| kColdStartHardFaultCountThreshold and WarmStartHardFaultCountThreshold in |
| startup_metric_utils.cc for details --> |
| |
| <owner>chrisha@chromium.org</owner> |
| <owner>fdoray@chromium.org</owner> |
| <summary> |
| The number of hard faults incurred in the browser process from startup to |
| start of the main thread's message loop, not including first runs of the |
| browser. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserMessageLoopStartTime" units="ms" |
| expires_after="never"> |
| <!-- expires-never: used to diagnose regressions to Startup.FirstWebContents.NonEmptyPaint3 --> |
| |
| <owner>fdoray@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <summary> |
| Time from application start to the start of the main thread's message loop. |
| Not recorded for first run. |
| |
| April 8, 2020: Changed the reference from process creation to application |
| start. See Startup.FirstWebContents.NonEmptyPaint3 for a definition of |
| application start. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserMessageLoopStartTime.FirstRun" units="ms" |
| expires_after="never"> |
| <!-- expires-never: only metric to ensure that first run doesn't regress --> |
| |
| <owner>fdoray@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <summary> |
| Time from application start to the start of the main thread's message loop. |
| Recorded for a first run of the browser. |
| |
| April 8, 2020: Changed the reference from process creation to application |
| start. See Startup.FirstWebContents.NonEmptyPaint3 for a definition of |
| application start. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserProcessImpl_PreMainMessageLoopRunTime" |
| units="ms" expires_after="M85"> |
| <owner>rkaplow@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed during |
| BrowserProcessImpl::PreMainMessageLoopRun. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserWindow.FirstPaint" units="ms" |
| expires_after="2021-09-19"> |
| <owner>sebmarchand@chromium.org</owner> |
| <owner>mblsha@yandex-team.ru</owner> |
| <summary> |
| Time from application start to the time the first Browser window has |
| finished painting its children. |
| |
| April 8, 2020: Changed the reference from process creation to application |
| start. See Startup.FirstWebContents.NonEmptyPaint3 for a definition of |
| application start. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserWindow.FirstPaint.CompositingEnded" units="ms" |
| expires_after="2020-04-26"> |
| <obsolete> |
| Removed 02/2021. |
| </obsolete> |
| <owner>sebmarchand@chromium.org</owner> |
| <owner>mblsha@yandex-team.ru</owner> |
| <summary> |
| Time from application start to the time the GPU has finished compositing |
| after first Browser window has finished painting its children. At this point |
| the Browser interface is visible on screen. Measures how much time does it |
| take for GPU to actually paint the first time. |
| |
| April 8, 2020: Changed the reference from process creation to application |
| start. See Startup.FirstWebContents.NonEmptyPaint3 for a definition of |
| application start. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.BrowserWindowDisplay" units="ms" expires_after="never"> |
| <!-- expires-never: used to diagnose regressions to Startup.FirstWebContents.NonEmptyPaint3 --> |
| |
| <owner>fdoray@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <summary> |
| Time from application start to the time the browser window initially becomes |
| visible. |
| |
| April 8, 2020: Changed the reference from process creation to application |
| start. See Startup.FirstWebContents.NonEmptyPaint3 for a definition of |
| application start. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.ColdStartFromProcessCreationTime" units="ms" |
| expires_after="2021-08-22"> |
| <obsolete> |
| Removed 03/2021. Broken starting M-87; removed and replaced with |
| Startup.ColdStartFromProcessCreationTimeV2 in M-91. |
| </obsolete> |
| <owner>djean@chromium.org</owner> |
| <owner>olivierrobin@chromium.org</owner> |
| <summary> |
| The duration of all initializations from process creation time to UI ready. |
| This includes code loading, static initializers and the execution time |
| contained in Startup.ColdStartWithExternalURLTime and |
| Startup.ColdStartWithoutExternalURLTime metrics. iOS specific. Deprecated |
| due to incomplete data from M87 to M91. The data is incomplete because it |
| was not logged in iOS 13+. See Startup.ColdStartFromProcessCreationTimeV2 |
| instead. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.ColdStartFromProcessCreationTimeV2" units="ms" |
| expires_after="2022-03-24"> |
| <owner>djean@chromium.org</owner> |
| <owner>olivierrobin@chromium.org</owner> |
| <summary> |
| The duration of all initializations from process creation time to UI ready |
| to receive input. iOS specific, from M91+ |
| |
| The process can only be created in response to a user action, either tapping |
| the icon, tapping a link that opens in Chrome, or using the app switcher to |
| switch to Chrome after it has been background-killed by the OS. |
| |
| The metric is recorded at the point where the Chrome window starts receiving |
| input events like touches and keypresses. However, the Chrome splash screen |
| is showing at this point, so there aren't any UI elements for a user to |
| interact with. |
| |
| It includes code loading, static initializers and the execution time |
| contained in Startup.ColdStartWithExternalURLTime and |
| Startup.ColdStartWithoutExternalURLTime metrics. |
| |
| The total counts in this histogram can be compared with the number of emits |
| to the user action MobileWillEnterForeground. The former reports the number |
| of cold starts. The latter is only recorded when Chrome comes to the |
| foreground on non-cold starts. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.ColdStartWithExternalURLTime" units="ms" |
| expires_after="2021-04-18"> |
| <owner>jif@chromium.org</owner> |
| <summary> |
| The duration of all initializations in a cold start triggered by an external |
| URL. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.ColdStartWithoutExternalURLTime" units="ms" |
| expires_after="M82"> |
| <owner>jif@chromium.org</owner> |
| <summary> |
| The duration of all initializations in a cold start not triggered by an |
| external URL. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.CreateFirstProfile" units="ms" expires_after="never"> |
| <!-- expires-never: used to diagnose regressions to Startup.FirstWebContents.NonEmptyPaint3 --> |
| |
| <owner>fdoray@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <summary> |
| How long it takes to load the original profile synchronously on the UI |
| thread. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.FirstWebContents.FinishReason" |
| enum="StartupProfilingFinishReason" expires_after="never"> |
| <!-- expires-never: used to understand user behavior shifts when Startup.FirstWebContents.NonEmptyPaint3 regresses --> |
| |
| <owner>fdoray@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <summary> |
| [Desktop] The reason for which startup profiling was deemed complete. Logged |
| once per session on startup. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.FirstWebContents.MainNavigationFinished" units="ms" |
| expires_after="never"> |
| <!-- expires-never: used to diagnose regressions to Startup.FirstWebContents.NonEmptyPaint3 --> |
| |
| <owner>fdoray@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <summary> |
| [Desktop] Measure the elapsed time from application start to the moment when |
| the navigation is committed (first bytes received) in the first web |
| contents' main frame. |
| |
| April 8, 2020: Changed the reference from process creation to application |
| start. See Startup.FirstWebContents.NonEmptyPaint3 for a definition of |
| application start. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.FirstWebContents.MainNavigationStart" units="ms" |
| expires_after="never"> |
| <!-- expires-never: used to diagnose regressions to Startup.FirstWebContents.NonEmptyPaint3 --> |
| |
| <owner>fdoray@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <summary> |
| [Desktop] Measure the elapsed time from application start to the beginning |
| of navigation in the first web contents' main frame. |
| |
| April 8, 2020: Changed the reference from process creation to application |
| start. See Startup.FirstWebContents.NonEmptyPaint3 for a definition of |
| application start. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.FirstWebContents.NonEmptyPaint3" units="ms" |
| expires_after="never"> |
| <!-- expires-never: guiding metric (internal: go/chrome-browser-guiding-metrics) --> |
| |
| <owner>etiennep@chromium.org</owner> |
| <owner>fdoray@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <owner>chrome-analysis-team@google.com</owner> |
| <summary> |
| Measure the elapsed time from the application start to the first non empty |
| paint of the first web contents. Only comprised of cases where the initial |
| foreground tab gets to complete its rendering task unimpeded (an improvement |
| over Startup.FirstWebContents.NonEmptyPaint). |
| |
| Application start is a time recorded as early as possible in the startup |
| process. On Android, the application start is the time at which the Java |
| code starts. On Windows, application start is when chrome.exe:main starts, |
| before chrome.dll is loaded. On other platforms, it is when |
| ChromeMainDelegate is constructed. |
| </summary> |
| </histogram> |
| |
| <histogram |
| name="Startup.FirstWebContents.RenderProcessHostInit.ToNonEmptyPaint" |
| units="ms" expires_after="M78"> |
| <owner>hans@chromium.org</owner> |
| <summary> |
| Time between RenderFrameHostImpl::Init and |
| Startup.FirstWebContents.NonEmptyPaint2. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.LoadTime.ApplicationStartToChromeMain" units="ms" |
| expires_after="never"> |
| <!-- expires-never: used to diagnose regressions to Startup.FirstWebContents.NonEmptyPaint3 --> |
| |
| <owner>fdoray@chromium.org</owner> |
| <owner>etiennep@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <summary> |
| Time from the application start to the C++ ChromeMain() function being |
| invoked. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.LoadTime.ProcessCreateToApplicationStart" units="ms" |
| expires_after="never"> |
| <!-- expires-never: used to diagnose regressions to Startup.FirstWebContents.NonEmptyPaint3 --> |
| |
| <owner>fdoray@chromium.org</owner> |
| <owner>etiennep@chromium.org</owner> |
| <owner>gab@chromium.org</owner> |
| <summary> |
| Time from the process creation to application start, i.e. time recorded as |
| early as possible in the startup process. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.MobileSessionStartAction" |
| enum="MobileSessionStartAction" expires_after="2021-09-05"> |
| <owner>thegreenfrog@chromium.org</owner> |
| <owner>olivierrobin@chromium.org</owner> |
| <summary> |
| The action requested on the application startup when called from another app |
| or the OS. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.MobileSessionStartFromApps" |
| enum="MobileSessionCallerApp" expires_after="2021-09-05"> |
| <owner>thegreenfrog@chromium.org</owner> |
| <owner>olivierrobin@chromium.org</owner> |
| <summary>The calling application (if any).</summary> |
| </histogram> |
| |
| <histogram name="Startup.OSX.AwakeFromNib" units="ms" |
| expires_after="2018-08-30"> |
| <owner>erikchen@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed between main entry and the invocation of |
| -[AppControllerMac awakeFromNib]. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.OSX.DockIconWillFinishBouncing" units="ms" |
| expires_after="M77"> |
| <owner>erikchen@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed between main entry and the invocation of |
| -[AppControllerMac didFinishLaunching:]. At that point, the dock icon will |
| finish its current animation and stop bouncing. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.OSX.PostMainMessageLoopStart" units="ms" |
| expires_after="M85"> |
| <owner>erikchen@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed between main entry and the invocation of |
| ChromeBrowserMainPartsMac::PostMainMessageLoopStart. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.OSX.PostProfileInit" units="ms" expires_after="M77"> |
| <owner>erikchen@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed between main entry and the invocation of |
| ChromeBrowserMainPartsMac::PostProfileInit. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.OSX.PreMainMessageLoopStart" units="ms" |
| expires_after="2018-08-30"> |
| <owner>erikchen@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed between main entry and the invocation of |
| ChromeBrowserMainPartsMac::PreMainMessageLoopStart. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.OSX.PreProfileInit" units="ms" |
| expires_after="2018-08-30"> |
| <owner>erikchen@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed between main entry and the invocation of |
| ChromeBrowserMainPartsMac::PreProfileInit. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.OSX.WillFinishLaunching" units="ms" |
| expires_after="2018-08-30"> |
| <owner>erikchen@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed between main entry and the invocation of |
| -[AppControllerMac willFinishLaunching:]. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.PreMainMessageLoopRunImplLongTime" units="ms" |
| expires_after="2021-08-22"> |
| <owner>rkaplow@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed during |
| ChromeBrowserMainParts::PreMainMessageLoopRunImpl. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.StartupBrowserCreator_Start" units="ms" |
| expires_after="M77"> |
| <owner>rkaplow@chromium.org</owner> |
| <summary> |
| The amount of time that elapsed during StartupBrowserCreator::Start(). |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.Temperature" enum="StartupTemperature" |
| expires_after="2021-10-10"> |
| <!-- expires-after: Diagnosis metric for changes in StartupTemperature suffix. |
| Shouldn't truly expire but kColdStartHardFaultCountThreshold should be |
| surveyed yearly. --> |
| |
| <owner>chrisha@chromium.org</owner> |
| <owner>fdoray@chromium.org</owner> |
| <summary> |
| Indicates whether or not the given startup was warm, cold or unable to be |
| determined. This is based off observing the number of hard faults that occur |
| during startup prior to Startup.BrowserMessageLoopStartTime. The threshold |
| for cold startup was updated Jan 2020, a bump in the metric is expected. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.WebFooterExperiment.DidFirstVisuallyNonEmptyPaint" |
| units="ms" expires_after="M89"> |
| <owner>pbos@chromium.org</owner> |
| <owner>robliao@chromium.org</owner> |
| <summary> |
| Time from application start until the first web footer finishes painting. |
| |
| April 8, 2020: Changed the reference from process creation to application |
| start. See Startup.FirstWebContents.NonEmptyPaint3 for a definition of |
| application start. |
| </summary> |
| </histogram> |
| |
| <histogram name="Startup.WebFooterExperiment.WebFooterCreation" units="ms" |
| expires_after="M89"> |
| <owner>pbos@chromium.org</owner> |
| <owner>robliao@chromium.org</owner> |
| <summary> |
| Time from application start until the first WebView used to display a web |
| footer is created. |
| |
| April 8, 2020: Changed the reference from process creation to application |
| start. See Startup.FirstWebContents.NonEmptyPaint3 for a definition of |
| application start. |
| </summary> |
| </histogram> |
| |
| </histograms> |
| |
| </histogram-configuration> |