PostgreSQL Metrics
See also: PostgreSQL integration information.
| Metric Name | Type | Description |
|---|---|---|
postgresql.seq_scans | gauge | The number of sequential scans initiated on this table. |
postgresql.index_scans | gauge | The number of index scans initiated on this table. |
postgresql.index_rows_fetched | gauge | The number of live rows fetched by index scans. |
postgresql.rows_hot_updated | gauge | The number of rows HOT updated, meaning no separate index update was needed. |
postgresql.live_rows | gauge | The estimated number of live rows. |
postgresql.dead_rows | gauge | The estimated number of dead rows. |
postgresql.index_rows_read | gauge | The number of index entries returned by scans on this index. |
postgresql.table_size | gauge | The total disk space used by the specified table. Includes TOAST, free space map, and visibility map. Excludes indexes. |
postgresql.index_size | gauge | The total disk space used by indexes attached to the specified table. |
postgresql.total_size | gauge | The total disk space used by the table, including indexes and TOAST data. |
postgresql.heap_blocks_read | gauge | The number of disk blocks read from this table. |
postgresql.heap_blocks_hit | gauge | The number of buffer hits in this table. |
postgresql.index_blocks_read | gauge | The number of disk blocks read from all indexes on this table. |
postgresql.index_blocks_hit | gauge | The number of buffer hits in all indexes on this table. |
postgresql.toast_blocks_read | gauge | The number of disk blocks read from this table’s TOAST table. |
postgresql.toast_blocks_hit | gauge | The number of buffer hits in this table’s TOAST table. |
postgresql.toast_index_blocks_read | gauge | The number of disk blocks read from this table’s TOAST table index. |
postgresql.toast_index_blocks_hit | gauge | The number of buffer hits in this table’s TOAST table index. |
postgresql.active_queries | gauge | The number of active queries in this database. |
postgresql.archiver.archived_count | gauge | The number of WAL files that have been successfully archived. |
postgresql.archiver.failed_count | gauge | The number of failed attempts for archiving WAL files. |
postgresql.before_xid_wraparound | gauge | The number of transactions that can occur until a transaction wraparound. |
postgresql.index_rel_rows_fetched | rate | The number of live rows fetched by index scans. |
postgresql.transactions.idle_in_transaction | gauge | The number of ‘idle in transaction’ transactions in this database. |
postgresql.transactions.open | gauge | The number of open transactions in this database. |
postgresql.waiting_queries | gauge | The number of waiting queries in this database. |
postgresql.waiting_queries | gauge | The number of buffers allocated |
postgresql.bgwriter.buffers_backend | gauge | The number of buffers written directly by a backend. |
postgresql.bgwriter.buffers_backend_fsync | gauge | The of times a backend had to execute its own fsync call instead of the background writer. |
postgresql.bgwriter.buffers_checkpoint | gauge | The number of buffers written during checkpoints. |
postgresql.bgwriter.buffers_clean | gauge | The number of buffers written by the background writer. |
postgresql.bgwriter.checkpoints_requested | gauge | The number of requested checkpoints that were performed. |
postgresql.bgwriter.checkpoints_timed | gauge | The number of scheduled checkpoints that were performed. |
postgresql.bgwriter.maxwritten_clean | gauge. | The number of times the background writer stopped a cleaning scan due to writing too many buffers. |
postgresql.bgwriter.sync_time | gauge | The total amount of checkpoint processing time spent synchronizing files to disk. |
postgresql.bgwriter.write_time | gauge | The total amount of checkpoint processing time spent writing files to disk. |
postgresql.buffer_hit | gauge | The number of times disk blocks were found in the buffer cache, preventing the need to read from the database. |
postgresql.commits | gauge | The number of transactions that have been committed in this database. |
postgresql.connections | gauge | The number of active connections to this database. |
postgresql.database_size | gauge | The disk space used by this database. |
postgresql.deadlocks | gauge | The number of deadlocks detected in this database |
postgresql.disk_read | gauge | The number of disk blocks read in this database. |
postgresql.locks | gauge | The number of locks active for this database. |
postgresql.max_connections | gauge | The maximum number of client connections allowed to this database. |
postgresql.percent_usage_connections | gauge | The number of connections to this database as a fraction of the maximum number of allowed connections. |
postgresql.replication_delay | gauge | The current replication delay in seconds. Only available with PostgreSQL 9.1 and newer. |
postgresql.replication_delay_bytes | gauge | The current replication delay in bytes. Only available with PostgreSQL 9.2 and newer. |
postgresql.rollbacks | gauge | The number of transactions that have been rolled back in this database. |
postgresql.rows_deleted | gauge | The number of rows deleted by queries in this database. |
postgresql.rows_fetched | gauge | The number of rows fetched by queries in this database. |
postgresql.rows_inserted | gauge | The number of rows inserted by queries in this database. The metrics can be segmented by ‘db’ or ’table’ and can be viewed per-relation. |
postgresql.rows_returned | gauge | The number of rows returned by queries in this database. The metrics can be segmented by ‘db’ or ’table’ and can be viewed per-relation. |
postgresql.rows_updated | gauge | The number of rows updated by queries in this database. |
postgresql.rows_deleted | gauge | The number of rows deleted by queries in this database. The metrics can be segmented by ‘db’ or ’table’ and can be viewed per-relation. |
postgresql.table.count | gauge | The number of user tables in this database. |
postgresql.temp_bytes | gauge | The amount of data written to temporary files by queries in this database. |
postgresql.temp_files | gauge | The number of temporary files created by queries in this database. |
postgresql.toast_blocks_read | gauge | The number of disk blocks read from this table’s TOAST table. |
postgresql.transactions.idle_in_transaction | gauge | The number of ‘idle in transaction’ transactions in this database. |
postgresql.transactions.open | gauge | The number of open transactions in this database. |
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Last modified June 23, 2022