ayui@chromium.org chrome-owp-storage@google.com How many kilobytes are how old. Similar to |AgeOfOrigin| except a sample is added for each kilobyte of an origin's data. Logged hourly for all origins with stored data. Warning: this histogram was expired from 2025/04 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com How many days it's been since an origin's temporary storage has been accessed. Logged hourly for all origins with stored data. Warning: this histogram was expired from 2025/04 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Amount of free disk space for the storage directory. Logged at irregular intervals. ayui@chromium.org chrome-owp-storage@google.com Amount of free disk space for the storage directory. Logged when collecting usage information. ayui@chromium.org chrome-owp-storage@google.com Records whether the database migration was successful. Recorded after attempting to migrate the database. arichiv@chromium.org chrome-owp-storage@google.com Emitted when the browsing context loads a quota bucket for use and updates the last_accessed field in the database. Number of days since a quota bucket was accessed. Capped at 400 days as buckets are not retained past that point. ayui@chromium.org chrome-owp-storage@google.com Difference between acceptable lower limit of diskspace and actual free diskspace at beginning of an eviction round. Recorded after every eviction round is finished. ayui@chromium.org chrome-owp-storage@google.com The number of times the evicted bucket was accessed. Logged when the bucket is evicted. Replaces Quota.EvictedOriginAccessCount when eviction was per origin. ayui@chromium.org chrome-owp-storage@google.com The number of days since the evicted bucket was last accessed. Logged when the bucket is evicted. Replaces Quota.EvictedOriginDaysSinceAccess when eviction was per origin. Warning: this histogram was expired from 2025/01 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Number of evicted buckets in an hour. Replaces Quota.EvictedOriginPerHour when eviction was per origin. Warning: this histogram was expired from 2024/09 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Amount of usage used by evicted buckets in an eviction round. Prior to M94, evictions were based on per origin instead of per bucket. Warning: this histogram was expired from 2024/09 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Number of eviction rounds in an hour. Warning: this histogram was expired from 2020/10 to 2022/06 and from 2025/04 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com The size of the global temporary storage pool. Logged at irregular intervals. Warning: this histogram was expired from 2024/12 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Global usage of temporary storage. Warning: this histogram was expired from 2024/12 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Number of evicted buckets per round. Warning: this histogram was expired from 2025/04 to 2025/06; data may be missing. arichiv@chromium.org chrome-owp-storage@google.com Records the amount of orphan (nonce-bound buckets which will never be loaded) on QuotaTemporaryStorageEvictor rounds. Starts recording one minute after initialization of QuotaDatabase to ensure session restore has completed. See crbug.com/353555346 for more info. ayui@chromium.org chrome-owp-storage@google.com Percentage of the storage device that is free. Logged when collecting usage information. ayui@chromium.org chrome-owp-storage@google.com Percentage of an origin's quota that is being used by the origin. Logged at irregular intervals. Warning: this histogram was expired from 2024/12 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Percentage of the storage device that is being use for temporary storage. Logged when collecting usage information. Warning: this histogram was expired from 2024/12 to 2025/06; data may be missing. leimy@chromium.org evanstade@microsoft.com chrome-owp-storage@google.com Records at which step the QuotaDatabase failed to bootstrap. Warning: this histogram was expired from 2024/07 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Records the reason the QuotaDatabase was reset to understand how frequently and why this happens. This will inform us on how we should implement data recovery for storage data when the QuotaDatabase is reset. ayui@chromium.org chrome-owp-storage@google.com The quota value computed for an origin using temporary storage. Logged at irregular intervals. (In the process of writing new data, storage systems consult the quota system for "usage and quota" to determine if there is sufficient space available for the new data. This value is logged at the time of that consultation. The frequency is dependent on how individual websites use the various storage apis.) Warning: this histogram was expired from 2024/12 to 2025/06; data may be missing. arichiv@chromium.org chrome-owp-storage@google.com Records the amount of stale (400 days since last access or write and not persistent) storage buckets on QuotaTemporaryStorageEvictor rounds. Emitted without knowledge of eviction success or failure. See crbug.com/40281870 for more info. ayui@chromium.org chrome-owp-storage@google.com Time spent to an eviction round. Warning: this histogram was expired from 2018/08 to 2022/06 and from 2025/05 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Total number of entries in the QuotaDatabase buckets table for a profile. Logged hourly. Warning: this histogram was expired from 2025/04 to 2025/06; data may be missing. ayui@chromium.org chrome-owp-storage@google.com Total disk space for the storage directory. Logged at irregular intervals. ayui@chromium.org chrome-owp-storage@google.com Whether base::SysInfo::AmountOfTotalDiskSpace() returned zero or a negative number to the quota system. Logged whenever something is pinging the system for quota or device info. ayui@chromium.org chrome-owp-storage@google.com Disk space (in MB) currently used by an origin. Logged hourly.