|
pg_stat_bgwriterpg_stat_bgwriter
- One row only, showing cluster-wide statistics from the
- background writer: number of scheduled checkpoints, requested
- checkpoints, buffers written by checkpoints and cleaning scans,
- and the number of times the background writer stopped a cleaning scan
- because it had written too many buffers. Also includes
- statistics about the shared buffer pool, including buffers written
- by backends (that is, not by the background writer), how many times
- those backends had to execute their own fsync calls (normally the
- background writer handles those even when the backend does its own
- write), total buffers allocated, and time of last statistics reset.
+ One row only, showing cluster-wide statistics. See
+ for more details.
|
pg_stat_databasepg_stat_database
- One row per database, showing database OID, database name,
- number of active server processes connected to that database,
- number of transactions committed and rolled back in that database,
- total disk blocks read, total buffer hits (i.e., block
- read requests avoided by finding the block already in buffer cache),
- number of rows returned, fetched, inserted, updated and deleted, the
- total number of queries canceled due to conflict with recovery (on
- standby servers), number and size of temporary files used, total
- number of deadlocks detected, and time of last statistics reset.
-
+ One row per database, showing database wide statistics. See
+ for more details.
+
|
pg_stat_database_conflictspg_stat_database_conflicts
- One row per database, showing database OID, database name and
- the number of queries that have been canceled in this database due to
- dropped tablespaces, lock timeouts, old snapshots, pinned buffers and
- deadlocks. Will only contain information on standby servers, since
- conflicts do not occur on master servers.
+
+ One row per database showing database wide statistics about
+ query cancels due to conflict with recovery on standby servers.
+ Will only contain information on standby servers, since
+ conflicts do not occur on master servers.
+ See for more details.
|
pg_stat_replicationpg_stat_replication
-
One row per WAL sender process, showing process ID,- user OID, user name, application name, client's address, host name
- (if available) and port number, time at which the server process began
- execution, and the current WAL sender state and transaction log
- location. In addition, the standby reports the last transaction log
- position it received and wrote, the last position it flushed to disk,
- and the last position it replayed, and this information is also
- displayed here. If the standby's application names matches one of the
- settings in synchronous_standby_names then the sync_priority
- is shown here also, that is the order in which standbys will become
- the synchronous standby. The columns detailing what exactly the connection
- is doing are only visible if the user examining the view is a superuser.
- The client's host name will be available only if
- is set or if the user's host name
- needed to be looked up during pg_hba.conf
- processing. Only directly connected standbys are listed; no information
- about downstream standby servers is recorded.
+ One row per WAL sender process, showing statistics about the
+ replication to this slave. See
+ for more details. Only directly connected standbys are listed; no
+ information about downstream standby servers is recorded.
|
pg_stat_all_tablespg_stat_all_tables
- For each table in the current database (including TOAST tables),
- the table OID, schema and table name, number of sequential
- scans initiated, number of live rows fetched by sequential
- scans, number of index scans initiated (over all indexes
- belonging to the table), number of live rows fetched by index
- scans, numbers of row insertions, updates, and deletions,
- number of row updates that were HOT (i.e., no separate index update),
- numbers of live and dead rows,
- the last time the table was non-
- the last time it was vacuumed by the autovacuum daemon,
- the last time it was analyzed manually,
- the last time it was analyzed by the autovacuum daemon,
- number of times it has been non-
- number of times it has been vacuumed by the autovacuum daemon,
- number of times it has been analyzed manually,
- and the number of times it has been analyzed by the autovacuum daemon.
+
+ One row for each table in the current database (including TOAST
+ tables) with information about accesses to this specific table.
+ See for more details.
|
pg_stat_all_indexespg_stat_all_indexes
- For each index in the current database,
- the table and index OID, schema, table and index name,
- number of index scans initiated on that index, number of
- index entries returned by index scans, and number of live table rows
- fetched by simple index scans using that index.
+
+ One row for each index in the current database with information
+ about accesses to this specific index.
+ See for more details.
|
pg_statio_all_tablespg_statio_all_tables
- For each table in the current database (including TOAST tables),
- the table OID, schema and table name, number of disk
- blocks read from that table, number of buffer hits, numbers of
- disk blocks read and buffer hits in all indexes of that table,
- numbers of disk blocks read and buffer hits from that table's
- auxiliary TOAST table (if any), and numbers of disk blocks read
- and buffer hits for the TOAST table's index.
+
+ One row for each table in the current database (including TOAST
+ tables) with information about I/O on this specific table.
+ See for more details.
|
pg_statio_all_indexespg_statio_all_indexes
- For each index in the current database,
- the table and index OID, schema, table and index name,
- numbers of disk blocks read and buffer hits in that index.
+
+ One row for each index in the current database
+ with information about I/O on this specific index.
+ See for more details.
|
pg_statio_all_sequencespg_statio_all_sequences
- For each sequence object in the current database,
- the sequence OID, schema and sequence name,
- numbers of disk blocks read and buffer hits in that sequence.
-
+
+ One row for each sequence in the current database
+ with information about I/O on this specific sequence.
+ See for more details.
+
|
|
pg_stat_user_functionspg_stat_user_functions
- For all tracked functions, function OID, schema, name, number
- of calls, total time, and self time. Self time is the
- amount of time spent in the function itself, total time includes the
- time spent in functions it called. Time values are in milliseconds.
-
+
+ One row for each tracked function (as specified by the
+ parameter). See
+ for more details.
+
|
+ The pg_stat_activity view will have one row
+ per server process, showing information related to each connection to
+ the server.
+
+
+
pg_stat_bgwriter view
+
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ checkpoints_timed
+ bigint
+ Number of scheduled checkpoints
+
+ |
+ checkpoints_requested
+ bigint
+ Number of requested checkpoints
+
+ |
+ buffers_checkpoint
+ bigint
+ Number of buffers written during checkpoints
+
+ |
+ buffers_clean
+ bigint
+ Number of buffers written by the background writer
+
+ |
+ maxwritten_clean
+ bigint
+ Number of times the background writer stopped a cleaning
+ scan because it had written too many buffers
+
+ |
+ buffers_backend
+ bigint
+ Number of buffers written directly by a backend
+
+ |
+ buffers_backend_fsync
+ bigint
+ Number of times a backend had to execute its own fsync
+ call (normally the background writer handles those even when the
+ backend does its own write)
+
+ |
+ buffers_alloc
+ bigint
+ Number of buffers allocated
+
+ |
+ stats_reset
+ bigint
+ The last time these statistics were reset
+
+
+
+
+
+ The pg_stat_bgwriter view will always have a
+ single row with global data for the cluster.
+
+
+
pg_stat_database view
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ datid
+ oid
+ The oid of the database
+
+ |
+ datname
+ name
+ The name of the database
+
+ |
+ numbackends
+ integer
+ The number of backends currently connected to this database.
+ This is the only column in this view that returns a value for the
+ current state, all other columns return the accumulated values since
+ the last reset.
+
+ |
+ xact_commit
+ bigint
+ The number of transactions in this database that has committed
+
+ |
+ xact_rollback
+ bigint
+ The number of transactions in this database that has rolled back
+
+ |
+ blks_read
+ bigint
+ The number of disk blocks read in this database
+
+ |
+ blks_hits
+ bigint
+ The number of disk blocks read from the buffer cache
+ (this only includes hits in the PostgreSQL buffer cache, and not
+ the operating system filesystem cache)
+
+ |
+ tup_returned
+ bigint
+ The number of rows returned by queries in this database
+
+ |
+ tup_fetched
+ bigint
+ The number of rows fetched by queries in this database
+
+ |
+ tup_inserted
+ bigint
+ The number of rows inserted by queries in this database
+
+ |
+ tup_updated
+ bigint
+ The number of rows updated by queries in this database
+
+ |
+ tup_deleted
+ bigint
+ The number of rows deleted by queries in this database
+
+ |
+ conflicts
+ bigint
+
+ The number of queries canceled due to conflict with recovery
+ (on standby servers) in this database. (See
+ for more details)
+
+
+ |
+ temp_files
+ bigint
+
+ The number of temporary files written by queries in the database.
+ All temporary files are counted, regardless of why the temporary file
+ was created (sorting or hash) or file size, and regardless of the
+ setting.
+
+
+ |
+ temp_bytes
+ bigint
+
+ The amount of data written to temporary files by queries in
+ the database. All temporary files are counted, regardless of why
+ the temporary file was created (sorting or hash) or file size, and
+ regardless of the setting.
+
+
+ |
+ deadlocks
+ bigint
+ Number of deadlocks detected in the database
+
+ |
+ stats_reset
+ timestamptz
+ The last time the statistics were reset
+
+
+
+
+
+ The pg_stat_database view will contain one row
+ for each database in the cluster showing database wide statistics.
+
+
+
pg_stat_database_conflicts view
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ datid
+ oid
+ The oid of the database
+
+ |
+ datname
+ name
+ The name of the database
+
+ |
+ confl_tablespace
+ bigint
+ The number of queries that have been canceled due to
+ dropped tablespaces
+
+ |
+ confl_lock
+ bigint
+ The number of queries that have been canceled due to
+ lock timeouts
+
+ |
+ confl_snapshot
+ bigint
+ The number of queries that have been canceled due to
+ old snapshots
+
+ |
+ confl_bufferpin
+ bigint
+ The number of queries that have been canceled due to
+ pinned buffers
+
+ |
+ confl_deadlock
+ bigint
+ The number of queries that have been canceled due to
+ deadlocks
+
+
+
+
+
+ The pg_stat_database_conflicts view will contain
+ one row per database showing database wide statistics about
+ query cancels due to conflict with recovery on standby servers.
+ Will only contain information on standby servers, since
+ conflicts do not occur on master servers.
+
+
+
pg_stat_replication view
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ pid
+ integer
+ The process id of the WAL sender process
+
+ |
+ usesysid
+ oid
+ The oid of the user logged into this WAL sender process
+
+ |
+ usename
+ name
+ The name of the user logged into this WAL sender process
+
+ |
+ application_name
+ text
+ The name of the application that has initiated the connection
+ to the WAL sender.
+
+ |
+ client_addr
+ inet
+ The remote IP of the client connected to the WAL sender.
+ If this field is not set, it indicates that the client is
+ connected via a Unix socket on the server machine.
+
+
+ |
+ client_hostname
+ text
+
+ If available, the hostname of the client as reported by a
+ reverse lookup of client_addr. This field will
+ only be set when is enabled.
+
+
+ |
+ client_port
+ integer
+
+ The remote TCP port that the client is using for communication
+ to the , or NULL if a unix socket is used.
+
+
+ |
+ backend_start
+ timestamp with time zone
+
+ The time when this process was started, i.e. when the
+ client connected to the WAL sender.
+
+
+ |
+ state
+ text
+ Current WAL sender state
+
+ |
+ sent_location
+ text
+ Last transaction log position sent on this connection
+
+ |
+ write_location
+ text
+ Last transaction log position written to disk by the slave
+
+ |
+ flush_location
+ text
+ Last transaction log position flushed to disk by the slave
+
+ |
+ replay_location
+ text
+ Last transaction log position replayed into the database on the slave
+
+ |
+ sync_priority
+ int
+
+ The priority in the order which this slave will be picked as
+ the synchronous standby.
+
+
+ |
+ sync_state
+ text
+
+ The synchronous state of this slave.
+
+
+
+
+
+
+ The pg_stat_replication view will contain one row
+ per WAL sender process, showing statistics about the replication to this
+ slave. Only directly connected standbys are listed; no information about
+ downstream standby servers is recorded.
+
+
+
pg_stat_all_tables view
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ relid
+ oid
+ The OID of the table this row
+
+ |
+ schemaname
+ name
+ The name of the schema that the table is in
+
+ |
+ relname
+ name
+ The name of the table
+
+ |
+ seq_scan
+ bigint
+ The number of sequential scans initiated on this table
+
+ |
+ seq_tup_read
+ bigint
+ The number of live rows fetch by sequential scans
+
+ |
+ idx_scan
+ bigint
+ The number of index scans initiated on this table
+
+ |
+ idx_tup_fetch
+ bigint
+ The number of live rows fetch by index scans
+
+ |
+ n_tup_ins
+ bigint
+ The number of rows inserted
+
+ |
+ n_tup_upd
+ bigint
+ The number of rows updated
+
+ |
+ n_tup_del
+ bigint
+ The number of rows deleted
+
+ |
+ n_tup_hot_upd
+ bigint
+ The number of rows HOT (i.e., no separate index update) updated
+
+ |
+ n_live_tup
+ bigint
+ The number of live rows
+
+ |
+ n_dead_tup
+ bigint
+ The number of dead rows
+
+ |
+ last_vacuum
+ timestamp with time zone
+ The last time the table was manually non-
+
+ |
+ last_autovacuum
+ timestamp with time zone
+ The last time the table was vacuumed by the autovacuum daemon
+
+ |
+ last_analyze
+ timestamp with time zone
+ The last time the table was manually analyzed
+
+ |
+ last_autoanalyze
+ timestamp with time zone
+ The last time the table was analyzed by the autovacuum daemon
+
+ |
+ vacuum_count
+ bigint
+ The number of times this table has been manually non-
+
+ |
+ autovacuum_count
+ bigint
+ The number of times this table has been vacuumed by the autovacuum daemon
+
+ |
+ analyze_count
+ bigint
+ The number of times this table has been manually analyzed
+
+ |
+ autoanalyze_count
+ bigint
+ The number of times this table has been analyzed by the autovacuum daemon
+
+
+
+
+
+ The pg_stat_all_tables view will contain
+ one row for each table in the current database (including TOAST
+ tables) with information about accesses to this specific table. The
+ pg_stat_user_tables and
+ pg_stat_sys_tables contain the same information,
+ but filtered to only have rows for user and system tables.
+
+
+
pg_stat_all_indexes view
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ relid
+ oid
+ The OID of the table for this index
+
+ |
+ indexrelid
+ oid
+ The OID of the index
+
+ |
+ schemaname
+ name
+ The name of the schema the index is in
+
+ |
+ relname
+ name
+ The name of the table for this index
+
+ |
+ indexrelname
+ name
+ The name of the index
+
+ |
+ idx_scan
+ bigint
+ Number of index scans initiated on this index
+
+ |
+ idx_tup_read
+ bigint
+ Number of index entries returned by scans on this index
+
+ |
+ idx_tup_fetch
+ bigint
+ Number of live table rows fetched by simple index scans using this index
+
+
+
+
+
+ The pg_stat_all_indexes view will contain
+ one row for each index in the current database
+ with information about accesses to this specific index. The
+ pg_stat_user_indexes and
+ pg_stat_sys_indexes contain the same information,
+ but filtered to only have rows for user and system indexes.
+
+
+
pg_statio_all_tables view
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ relid
+ oid
+ The OID of the table
+
+ |
+ schemaname
+ name
+ The name of the schema that the table is in
+
+ |
+ relname
+ name
+ The name of the table
+
+ |
+ heap_blks_read
+ name
+ Number of disk blocks read from this table
+
+ |
+ heap_blks_hit
+ name
+ Number of buffer hits in this table
+
+ |
+ idx_blks_read
+ name
+ Number of disk blocks read from all indexes on this table
+
+ |
+ idx_blks_hit
+ name
+ Number of buffer hits in all indexes of this table
+
+ |
+ toast_blks_read
+ name
+ Number of disk blocks read from this table's TOAST table (if any)
+
+ |
+ toast_blks_hit
+ name
+ Number of buffer hits in this table's TOAST table (if any)
+
+ |
+ tidx_blks_read
+ name
+ Number of disk blocks read from this table's TOAST table index (if any)
+
+ |
+ tidx_blks_hit
+ name
+ Number of buffer hits in this table's TOAST table index (if any)
+
+
+
+
+
+ The pg_statio_all_tables view will contain
+ one row for each table in the current database (including TOAST
+ tables) with information about I/O on this specific table. The
+ pg_statio_user_tables and
+ pg_statio_sys_tables contain the same information,
+ but filtered to only have rows for user and system tables.
+
+
+
pg_statio_all_indexes view
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ relid
+ oid
+ The OID of the table for this index
+
+ |
+ indexrelid
+ oid
+ The OID of the index
+
+ |
+ schemaname
+ name
+ The name of the schema the index is in
+
+ |
+ relname
+ name
+ The name of the table for this index
+
+ |
+ indexrelname
+ name
+ The name of the index
+
+ |
+ idx_blks_read
+ name
+ Number of disk blocks read from the index
+
+ |
+ idx_blks_hit
+ name
+ Number of buffer hits in the index
+
+
+
+
+
+ The pg_statio_all_indexes view will contain
+ one row for each index in the current database
+ with information about I/O on this specific index. The
+ pg_statio_user_indexes and
+ pg_statio_sys_indexes contain the same information,
+ but filtered to only have rows for user and system indexes.
+
+
+
pg_statio_all_sequences view
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ relid
+ oid
+ The OID of the sequence
+
+ |
+ schemaname
+ name
+ The name of the schema the sequence is in
+
+ |
+ relname
+ name
+ The name of the sequence
+
+ |
+ blks_read
+ name
+ Number of disk blocks read from the sequence
+
+ |
+ blks_hit
+ name
+ Number of buffer hits in the sequence
+
+
+
+
+
+ The pg_statio_all_indexes view will contain
+ one row for each sequence in the current database
+ with information about I/O on this specific sequence.
+
+
+
pg_stat_user_functions view
+
+
+ |
+ Column
+ Type
+ Description
+
+
+
+
+ |
+ funcid
+ oid
+ The OID of the function
+
+ |
+ schemaname
+ name
+ The name of the schema the function is in
+
+ |
+ funcname
+ name
+ The name of the function
+
+ |
+ calls
+ bigint
+ Number of times the function has been called
+
+ |
+ total_time
+ bigint
+ Total time spent in this functions and all other functions
+ called by it, in milliseconds.
+
+ |
+ self_time
+ bigint
+ Total time spent in this functions itself but not including
+ other functions called by it, in milliseconds.
+
+
+
+
+
+ The pg_stat_user_functions view will contain
+ one row for each tracked function (as specified by the
+ parameter).
+
+
Statistics Access Functions
projects / postgresql.git / commitdiff