## BaseBackupThrottle
### Description
Waiting during base backup when throttling activity.
### OS Resources Consumed
- CPU threads (idle)
## CheckpointWriteDelay
### Description
Waiting between writes while performing a checkpoint.
### OS Resources Consumed
- CPU threads, disk I/O
## PgSleep
### Description
Waiting due to a call to pg_sleep or a sibling function.
### OS Resources Consumed
- CPU threads (idle)
## RecoveryApplyDelay
### Description
Waiting to apply WAL during recovery because of a delay setting.
### OS Resources Consumed
- CPU threads, disk I/O
## RecoveryRetrieveRetryInterval
### Description
Waiting during recovery when WAL data is not available from any source (pg_wal, archive, or stream).
### OS Resources Consumed
- CPU threads
## RegisterSyncRequest
### Description
Waiting while sending synchronization requests to the checkpointer because the request queue is full.
### OS Resources Consumed
- CPU threads, disk I/O
## SpinDelay
### Description
Waiting while acquiring a contended spinlock.
### OS Resources Consumed
- CPU threads
## VacuumDelay
### Description
Waiting in a cost-based vacuum delay point.
### OS Resources Consumed
- CPU threads (idle)
## VacuumTruncate
### Description
Waiting to acquire an exclusive lock to truncate off any empty pages at the end of a table vacuumed.
### OS Resources Consumed
- CPU threads, disk I/O