rouslan@chromium.org chrome-payments-team@google.com jinho.bang@samsung.com The time taken between dispatching an AbortPaymentEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com Execution time of ServiceWorkerGlobalScope.onactivate. Includes the time for waitUntil() promise to settle. yyanagisawa@chromium.org chrome-worker@google.com The result of dispatching the activate event to the worker. This is recorded to both ServiceWorker.ActivateEventStatus and whichever of ServiceWorker.ActivateEventStatus_InShutdown ServiceWorker.ActivateEventStatus_NotInShutdown is appropriate. (InShutdown means the context was null or ServiceWorkerProcessManger::Shutdown was called.) nator@chromium.org peter@chromium.org rayankans@chromium.org The time taken between dispatching a BackgroundFetchAbortEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. nator@chromium.org peter@chromium.org rayankans@chromium.org The time taken between dispatching a BackgroundFetchClickEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. nator@chromium.org peter@chromium.org rayankans@chromium.org The time taken between dispatching a BackgroundFetchFailEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. nator@chromium.org peter@chromium.org rayankans@chromium.org The time taken between dispatching a BackgroundFetchSuccessEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. This event is sent when the background fetch succeeds. nator@chromium.org rayankans@chromium.org The time taken between dispatching a SyncEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. yyanagisawa@chromium.org chrome-worker@google.com The length of cached metadata of scripts which are stored to the CacheStorage by the installing service worker. yyanagisawa@chromium.org chrome-worker@google.com The total length of cached metadata of scripts which are stored to the CacheStorage by the installing service worker. yyanagisawa@chromium.org chrome-worker@google.com The counts of scripts which are stored to the CacheStorage by the installing service worker. yyanagisawa@chromium.org chrome-worker@google.com The length of scripts which are stored to the CacheStorage by the installing service worker. yyanagisawa@chromium.org chrome-worker@google.com The total length of scripts which are stored to the CacheStorage by the installing service worker. rouslan@chromium.org chrome-payments-team@google.com jinho.bang@samsung.com The time taken between dispatching an CanMakePaymentEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. yyanagisawa@google.com chrome-worker@google.com Records result of destroy database operations in ServiceWorkerDatabase. yyanagisawa@google.com chrome-worker@google.com Records result of opening a database for ServiceWorkerDatabase. yyanagisawa@google.com chrome-worker@google.com Records result of read operations in ServiceWorkerDatabase. yyanagisawa@google.com chrome-worker@google.com Records result of write operations in ServiceWorkerDatabase. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com Records result of opening a disk cache for ServiceWorkerDiskCache. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com Records result of reading response from ServiceWorkerDiskCache. yyanagisawa@chromium.org chrome-worker@google.com Records result of writing response into ServiceWorkerDiskCache. This is not recorded when response has no body. Note that this is recorded on every write operation, and can there can be multiple write operations for the same response if it is large enough. panicker@chromium.org Records when StartWorker is received on the renderer. This is used to surface discrepancy between StartWorker being sent on the browser side and not getting received by renderer. EmbeddedWorkerInstance.Start.TimeToSendStartWorker should be used as a baseline. TODO(panicker): This should be removed after investigation of crbug/790903, potentially in M68. chikamune@chromium.org chrome-worker@google.com Execution time of the service worker's top level script. The metric is recorded for each startup of service workers. Recorded only when the evaluation was {ResultStatus}. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken between dispatching an ExtendableMessageEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken between dispatching a FetchEvent to a Service Worker and receiving a fallback-to-network reply. This histogram was expired between roughly 2021-08-01 and 2021-09-30. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken between dispatching a FetchEvent to a Service Worker and receiving a response. Includes the time for the respondWith() promise to settle. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The result of dispatching a fetch event to a Service Worker for a main resource request (i.e., a request for a navigation or a shared worker). yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time that a fetch event was queued. The start time is when the event is created on the service worker thread and added to the ServiceWorkerEventQueue. The end time is when the event is dequeued and the event handler starts to execute. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The result of dispatching a fetch event to a Service Worker for a subresource request (i.e., not a navigation or a shared worker request). sisidovski@chromium.org chrome-worker@google.com The result of the RaceNetworkRequest. RaceNetworkRequest runs a race between the network request which bypasses ServiceWorker, and the other request which goes through the fetch handler. This metric is recorded for {Resource}. sisidovski@chromium.org chrome-worker@google.com The result of {Action} mojo data pipe operation while transfering data from RaceNetworkRequest result. RaceNetworkRequest runs a race between the network request which bypasses ServiceWorker, and the other request which goes through the fetch handler. This metric is recorded for {Resource}. sisidovski@chromium.org chrome-worker@google.com The result if the RaceNetworkRequest received a redirect response. RaceNetworkRequest runs a race between the network request which bypasses ServiceWorker, and the other request which goes through the fetch handler. This metric is recorded for {Resource}. yyanagisawa@chromium.org chrome-worker@google.com The reason why the service worker fetch handler has been skipped. If the fetch handler has not been skipped for any reasons, it is just recorded as not skipped instead. yyanagisawa@chromium.org chrome-worker@google.com The type of the fetch handler recorded just before dispatching the fetch handler. This represent the fetch handler type, and does not represent if the fetch handler is skipped or not. chikamune@chromium.org chrome-worker@google.com Whether FindRegistrationForClientUrl() is called for navigation or not. This is recorded when FindRegistrationForClientUrl() function is called. chikamune@chromium.org chrome-worker@google.com Whether FindRegistrationForClientUrl() could skip calling mojo API by using scope cache. This is recorded only when FindRegistrationForClientUrl() is used for navigation. chikamune@chromium.org chrome-worker@google.com Execution time of FindRegistrationForClientUrl until continuation is called. The metric is not recorded during startup. chikamune@chromium.org chrome-worker@google.com Whether ServiceWorkerControlleeRequestHandler::MaybeCreateLoader found a service worker registration after looking up the registration by using FindRegistrationForClientUrl. yyanagisawa@chromium.org chrome-worker@google.com The number of network fetches performed by the install event handler. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The result of dispatching the install event to the worker. This histogram includes data for {type}. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken between dispatching an InstallEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. This histogram includes data for {type}. sisidovski@chromium.org chrome-worker@google.com The time taken from (a) the response of the AutoPreload is received, to (b) the fetch handler execution is completed. Recorded for each navigation request (including redirects) where there is a fetch event handler, the fetch event was successfully dispatched to the service worker, and ServiceWorkerAutoPreload is enabled. This is recorded even in the case when (b) is faster than (a). In this case the value will be 0. The response is from {ServiceWorkerFetchResponseFromName} yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken from (a) renderer process sends an IPC message to notify that a resource loading request needs to be fall back to network, to (b) browser process received the IPC. Recorded when no fetch event handler provided a response to the request. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) renderer process sends an IPC message to notify that a promise of respondWith() is settled, to (b) browser process received the IPC message. Recorded when a fetch event handler handled the request and provided a response to the request. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) a fetch event is dispatched, to (b) respondWith() is settled for the fetch event, or fetch event dispatch is finished without respondWith() being called. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. The records are breakdown by FetchEventResult. yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) a fetch event is dispatched, to (b) respondWith() is settled for the fetch event, or fetch event dispatch is finished without respondWith() being called. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} chikamune@chromium.org chrome-worker@google.com The time taken from (a) the start of finding service worker registration, to (b) reading response body is completed. Recorded when a fetch event handler handled the request. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} chikamune@chromium.org chrome-worker@google.com The time taken from (a) the start of finding service worker registration, to (b) browser process received the IPC. Recorded when no fetch event handler provided a response to the request. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} chikamune@chromium.org chrome-worker@google.com The time taken from (a) the start of finding service worker registration, to (b) the start of a navigation request. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) a resource loading request is routed to service worker path, to (b) a service worker is ready to handle the request. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus}{NavigationType} chikamune@chromium.org chrome-worker@google.com The initial service worker status. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {NavigationType} yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken from (a) response headers from service worker are received, to (b) reading response body is completed. Recorded when a fetch event handler handled the request. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {ServiceWorkerResponseSource} {EmbeddedWorkerInitialStatus} chikamune@chromium.org chrome-worker@google.com The time taken from (a) the start of a navigation request, to (b) reading response body is completed. Recorded when a fetch event handler handled the request. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} chikamune@chromium.org chrome-worker@google.com The time taken from (a) the start of a navigation request, to (b) browser process received the IPC. Recorded when no fetch event handler provided a response to the request. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken from (a) the start of a navigation request, to (b) the request is forwarded to a service worker code path. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken from (a) browser process sends an IPC message to dispatch a fetch event, to (b) a renderer process received the IPC message and is about to dispatch a fetch event. Recorded for each navigation request (including redirects) where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. {EmbeddedWorkerInitialStatus} sisidovski@chromium.org chrome-worker@google.com The time taken from (a) the response of the AutoPreload is received, to (b) the fetch handler execution is completed. Recorded for each subresource request where there is a fetch event handler, the fetch event was successfully dispatched to the service worker, and ServiceWorkerAutoPreload is enabled. This is recorded even in the case when (b) is faster than (a). In this case the value will be 0. The response is from {ServiceWorkerFetchResponseFromName} yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken from (a) service worker sends a mojo message to notify that a resource loading request needs to be fall back to network, to (b) the mojo message is received on the other side of mojo endpoint (a background thread executing subresource loading). Recorded when no fetch event handler provided a response to the request. Recorded for each subresource request where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken from (a) service worker sends a mojo message to notify that a promise of respondWith() is settled, to (b) the mojo message is received on the other side of mojo endpoint (a background thread executing subresource loading). Recorded when a fetch event handler handled the request and provided a response to the request. Recorded for each subresource request where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken from (a) a subresource request is routed to the URLLoader (on a background thread) for service worker controlled loads starts handling a subresource request, to (b) a service worker is ready to handle the request. Recorded for each subresource request where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken from (a) response headers from service worker are received, to (b) reading response body is completed. Only recorded when a fetch event handler handled the request. Recorded for each subresource request where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken from (a) a fetch event is dispatched, to (b) respondWith() is settled for the fetch event, or fetch event dispatch is finished without respondWith() being called. Recorded for each subresource request where there is a fetch event handler and the fetch event was successfully dispatched to the service worker. chikamune@chromium.org chrome-worker@google.com Loading time of the service worker's top level script. The metric is recorded for each startup of service workers. Recorded only when the loading was {ResultStatus}, and the service worker scripts were {WhetherAlreadyInstalledOrNot}. yyanagisawa@chromium.org chrome-worker@google.com Records the fetch result after the fetch handler has been dispatched. This is recorded after dispatching the fetch event handler to a service worker, and it executed the handler without error (i.e. abort or timeout). yyanagisawa@chromium.org chrome-worker@google.com Records the purpose for potentially starting a service worker. This is recorded every time a running worker is required whether it needs to be started or not in the ServiceWorkerVersion::RunAfterStartWorker() method. yyanagisawa@chromium.org chrome-worker@google.com Record the current status of a service worker when we need it to be running for some purpose. If the status is STOPPED or STOPPING then the service worker will be started. This is recorded from ServiceWorkerVersion::RunAfterStartWorker(). See also ServiceWorker.MaybeStartWorker.RunningStatusByPurpose_* for the breakdown by event type. yyanagisawa@chromium.org chrome-worker@google.com Record the current status of a service worker when we need it to be running broken down by the purpose for needing a worker. If the status is STOPPED or STOPPING then the service worker will be started. This is recorded from ServiceWorkerVersion::RunAfterStartWorker(). (see ServiceWorker.MaybeStartWorker.RunningStatus for all attempts). yyanagisawa@chromium.org chrome-worker@google.com The number of fetch handlers registered in a service worker script. This metrics is recorded every time a service worker starts and only includes fetch event handlers registered at script evaluation time. chikamune@chromium.org chrome-worker@google.com Execution time of FindRegistrationForClientUrl until continuation is called. It is recorded only once on browser startup. chikamune@chromium.org chrome-worker@google.com Whether the first navigation requires checking the existence of service worker registration in DB. It is recorded only once on browser startup. yyanagisawa@chromium.org chrome-worker@google.com The type of the fetch handler type to be stored in the database for update. During the start of ServiceWorker, the fetch handler type is decided, and sent via OnStarted. If the fetch handler type is different from the fetch handler type already recognized and stored before, it will eventually be updated when it is read from the database next time. This metrics records the name of the new fetch handler detected. ServiceWorker.OnStarted.UpdatedFetchHandlerTypeBySourceType_* for the breakdown by the source fetch handler type. yyanagisawa@chromium.org chrome-worker@google.com The type of the fetch handler type to be stored in the database for update per the source fetch handler type {SourceType} (See ServiceWorker.OnStarted.UpdatedFetchHandlerType for all attenpts). During the start of ServiceWorker, the fetch handler type is decided, and sent via OnStarted. If the fetch handler type is different from the fetch handler type already recognized and stored before, it will eventually be updated when it is read from the database next time. This metrics records the name of the new fetch handler detected. rouslan@chromium.org chrome-payments-team@google.com jinho.bang@samsung.com The time taken between dispatching an PaymentRequestEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. nator@chromium.org platform-capabilities@chromium.org The time taken between dispatching a PeriodicSyncEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. peter@chromium.org knollr@chromium.org The time taken between dispatching a PushEvent to a Service Worker and receiving a message that it finished handling the event. Includes the time for the waitUntil() promise to settle. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The number of StorageKeys that have a service worker registration. Recorded near browser startup, when the service worker storage system is initialized. sisidovski@chromium.org chrome-worker@google.com The result of the checksum update operation. Each ServiceWorker resource should have a sha256 cehcksum hash string in the database, and that will be updated when there is a change in ServiceWorker scripts, or the field is empty. yyanagisawa@chromium.org chrome-worker@google.com An error that happens in ServiceWorkerRouterEvaluator setup. For calculating an error ratio, no error case is also recorded. This metrics will be recorded per ServiceWorkerRouterEvaluator instance. sisidovski@chromium.org chrome-worker@google.com The reuslt of the router evaluation of the Static Routing API. This indicates which source type is used to get the resource. This will be recorded only when the router has matched the incoming resource. chikamune@chromium.org chrome-worker@google.com Whether the navigation requires checking the existence of service worker registration by using FindRegistrationForClientUrl(). This metric is not recorded during startup. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken to start a Service Worker that has not yet installed, from process allocation to ACK of started from the renderer (which occurs after script execution). This may include script download time. The metric is not recorded if DevTools was ever attached to the Service Worker during startup. See also ServiceWorker.StartWorker.Time for installed workers. This histogram was expired between approximately Feb through Sep 2021. yyanagisawa@chromium.org chrome-worker@google.com Recorded on each successful service worker startup. ServiceWorker.StartTiming.* uses timing data from both the renderer process and browser process. This histogram describes whether the clocks are known to be accurate and consistent accross processes, and whether the actual timing data for this worker startup was consistent, i.e., TimeTicks did not go backwards. If the clocks and timing were inconsistent, ServiceWorker.StartTiming.* metrics (other than this one) are not recorded. This histogram was expired between roughly 2021-07-30 and 2021-09-31. yyanagisawa@chromium.org chrome-worker@google.com The time taken to start a service worker that is already installed, from start of the start sequence (finding a renderer) to ACK of started from the renderer (which occurs after script execution). The metric is not recorded if DevTools was ever attached to the Service Worker during startup. It does not include time, if any, waiting for the service worker to finish stopping before asking it to start, if that occurred. This histogram was expired between roughly 2021-07-30 and 2021-09-31. yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) the renderer receiving the start worker IPC message, to (b) initial JavaScript evaluation starting on the worker thread. Recorded when ServiceWorker.StartTiming.Duration is recorded. yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) initial JavaScript evaluation finishing on the worker thread, to (b) the browser receiving the worker started IPC message (the final step of worker startup). Recorded when ServiceWorker.StartTiming.Duration is recorded. yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) initial JavaScript evaluation starting on the worker thread, to (b) initial JavaScript evaluation finishing on the worker thread. Recorded when ServiceWorker.StartTiming.Duration is recorded. yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) the browser sending the start worker IPC message, to (b) the renderer receiving the start worker IPC message. Recorded when ServiceWorker.StartTiming.Duration is recorded. chikamune@chromium.org chrome-worker@google.com The time taken from (a) the start of service worker startup, to (b) the renderer receiving the start worker IPC message. Recorded when ServiceWorker.StartTiming.Duration is recorded. This histogram was expired between roughly 2021-07-30 and 2021-09-31. yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) the start of service worker startup, to (b) initial JavaScript evaluation finishing on the worker thread. Recorded when ServiceWorker.StartTiming.Duration is recorded. This histogram was expired between roughly 2021-07-30 and 2021-09-31. yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) the start of service worker startup, to (b) initial JavaScript evaluation starting on the worker thread. Recorded when ServiceWorker.StartTiming.Duration is recorded. This histogram was expired between roughly 2021-07-30 and 2021-09-31. yyanagisawa@chromium.org chrome-worker@google.com The time taken from (a) the start of service worker startup, to (b) the browser sending the start worker IPC message. Recorded when ServiceWorker.StartTiming.Duration is recorded. yyanagisawa@chromium.org chrome-worker@google.com The purpose for starting up a service worker. Recorded only for installed workers. This histogram was expired between approximately Feb through Sep 2021. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The result of trying to start a Service Worker that is already installed. See also ServiceWorker.StartNewWorker.Status for new workers. See also ServiceWorker.StartWorker.StatusByPurpose_* for the breakdown by event type. yyanagisawa@chromium.org chrome-worker@google.com The result of trying to start a service worker for the event type {ServiceWorkerEventType} (see ServiceWorker.StartWorker.Status for all start attempts). Only recorded for installed workers. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com The time taken to start a Service Worker that is already installed, from process allocation to ACK of started from the renderer (which occurs after script execution). The metric is not recorded if DevTools was ever attached to the Service Worker during startup. See also ServiceWorker.StartNewWorker.Time for new workers. chikamune@chromium.org chrome-worker@google.com Records the start purpose for a service worker that timed out while starting up. Recorded only for installed workers. This histogram was expired between approximately Feb through Sep 2021. chikamune@chromium.org chrome-worker@google.com The phase the ServiceWorker was in when ServiceWorker startup timed out. This histogram was expired between approximately Feb through Sep 2021. yyanagisawa@chromium.org chrome-worker@google.com Records the cache storage error when the cache source is set by a rule for the ServiceWorker static routing API and the cache storage match call returns a status instead of a result. This metric is recorded for {Resource}. yyanagisawa@chromium.org chikamune@chromium.org chrome-worker@google.com Records result of storage recovery operations in ServiceWorkerStorage. chikamune@chromium.org chrome-worker@google.com The scope count for a given StorageKey. This is recorded when ServiceWorkerStorage::FindForClientUrlInDB() function is called. chikamune@chromium.org chrome-worker@google.com Execution time of ServiceWorkerStorage::FindForClientUrlInDB which is used by FindRegistrationForClientUrl. chikamune@chromium.org chrome-worker@google.com Records successes and failures of purging a stale resource in ServiceWorkerStorage. chikamune@chromium.org chrome-worker@google.com Execution time of ServiceWorkerStorage::ReadInitialDataFromDB which reads RegisteredStorageKey from a database. chikamune@chromium.org chrome-worker@google.com The cache creation time of service worker registration key on UI thread. Includes asynchronous call, thread hopping and the time of ServiceWorker.Storage.ReadInitialDataFromDB.Time. yyanagisawa@chromium.org chrome-worker@google.com The counts of retries to recover after a Storage Service crash. Logged after a recovery, or the maximum number of retries is exceeded. See ServiceWorkerRegistry::OnRemoteStorageDisconnected() for the maximum number of retries. joenotcharles@google.com chrome-worker@google.com The number of queued tasks that are waiting to be re-posted after recovering from a Storage Service crash. Logged at the same time as ServiceWorker.Storage.RetryCountForRecovery. yyanagisawa@google.com chrome-worker@google.com Type of subresources that is controlled with a service worker, but did not handled by a service worker (i.e. did not get replied via respondWith). This metric is taken every time a subresource load finishes. See ServiceWorker.Subresource.Handled.Type for handled cases. yyanagisawa@google.com chrome-worker@google.com Type of subresources that is controlled with a service worker, and handled by a service worker (i.e. get replied via respondWith). This metric is taken every time a subresource load finishes. See ServiceWorker.Subresource.Fallbacked.Type for fallbacked cases. yyanagisawa@google.com chrome-worker@google.com True if the workaround for crbug.com/1342408 has been applied. Otherwise, false. The workaround is applied when the response stream call back is called. This information is used to understand if we need to continue this workaround or not. cduvall@chromium.org chrome-worker@google.com The time taken to query the content settings in the browser process for the {operation} operation. This is recorded each time a sync call is made. ayui@chromium.org chrome-owp-storage@google.com The time to perform a 'match' operation on a given Cache when that cache is known to be fully initialized. This includes measurements for hits, misses, and errors. ayui@chromium.org chrome-owp-storage@google.com The time to perform a 'match' operation on a given Cache when the operation was initiated from a service worker currently processing a FetchEvent with a matching request URL. This includes measurements for hits, misses, and errors. ayui@chromium.org chrome-owp-storage@google.com Histogram for the ServiceWorker Cache API. {MatchType} This histogram was temporarily disabled from M96 through early 12/2021. ayui@chromium.org chrome-owp-storage@google.com Histogram for the ServiceWorker Cache API. {ProcessOps} This histogram was temporarily disabled from M96 through early 12/2021. ayui@chromium.org chrome-owp-storage@google.com Histogram for the ServiceWorker Cache API. {ProcessOps} This histogram was temporarily disabled from M96 through early 12/2021. jkarlin@chromium.org Whether a new ServiceWorkerCacheStorage and its directory were successfully created on disk. ayui@chromium.org chrome-owp-storage@google.com Records where the generic kErrorStorage value is triggered within the cache_storage code. This histogram was temporarily disabled from late 10/2021 to early 12/2021. ayui@chromium.org chrome-owp-storage@google.com The result from parsing and validating the index protobuf while calculating the list of cache_storage origins. ayui@chromium.org chrome-owp-storage@google.com The time in ms from when an operation is started until it completes. This histogram differs from the old OperationDuration in that it uses a different bucket size to measure longer values. ayui@chromium.org chrome-owp-storage@google.com The time in ms from when an operation is started until it completes. This histogram differs from the old OperationDuration in that it uses a different bucket size to measure longer values. ayui@chromium.org chrome-owp-storage@google.com The number of operations in the scheduling queue just before enqueuing a new operation. ayui@chromium.org chrome-owp-storage@google.com The time in ms from when an operation is started until it completes for the {ServiceWorkerCacheSchedulerOpClientType} instance. ayui@chromium.org chrome-owp-storage@google.com The time in ms from when an operation is started until it completes for the {ServiceWorkerCacheSchedulerOpClientType} instance. ayui@chromium.org chrome-owp-storage@google.com The number of operations in the scheduling queue just before enqueuing a new operation for the {ServiceWorkerCacheSchedulerOpClientType} instance.