Number of sequential scans initiated on this table, Number of live rows fetched by sequential scans, Number of index scans initiated on this table, Number of live rows fetched by index scans, Number of rows updated (includes HOT updated rows), Number of rows HOT updated (i.e., with no separate index update required), Estimated number of rows modified since this table was last analyzed, Estimated number of rows inserted since this table was last vacuumed, Last time at which this table was manually vacuumed (not counting VACUUM FULL), Last time at which this table was vacuumed by the autovacuum daemon, Last time at which this table was manually analyzed, last_autoanalyze timestamp with time zone, Last time at which this table was analyzed by the autovacuum daemon, Number of times this table has been manually vacuumed (not counting VACUUM FULL), Number of times this table has been vacuumed by the autovacuum daemon, Number of times this table has been manually analyzed, Number of times this table has been analyzed by the autovacuum daemon. The lag times reported in the pg_stat_replication view are measurements of the time taken for recent WAL to be written, flushed and replayed and for the sender to know about it. For example, to show the PIDs and current queries of all backends: Table28.20. Waiting for I/O on a multixact offset SLRU buffer. The pg_statio_all_sequences view will contain one row for each sequence in the current database, showing statistics about I/O on that specific sequence. Waiting to acquire an exclusive pin on a buffer. Waiting for a relation data file to reach durable storage. Heavyweight locks, also known as lock manager locks or simply locks, primarily protect SQL-visible objects such as tables. Waiting to read or write a data page in memory. Resetting these counters can cause autovacuum to not perform necessary work, which can cause problems such as table bloat or out-dated table statistics. See, One row for each table in the current database, showing statistics about I/O on that specific table. For details such as the functions' names, consult the definitions of the standard views. Re: Improve WALRead() to suck data directly from WAL buffers when possible @ LWTRANCHE_REPLICATION_SLOT_IO. The pg_stat_database view will contain one row for each database in the cluster, plus one for shared objects, showing database-wide statistics. If this field is null, it indicates that the client is connected via a Unix socket on the server machine. When recovery is performed at server start (e.g., after immediate shutdown, server crash, and point-in-time recovery), all statistics counters are reset. . Waiting for activity from a child process while executing a. See, At least one row per subscription, showing information about the subscription workers. idle in transaction: The backend is in a transaction, but is not currently executing a query. The fields returned are a subset of those in the pg_stat_activity view. Waiting for the page number needed to continue a parallel B-tree scan to become available. Thus, the server expects something to happen that is independent of its internal processes. Simple test for lock_waits log messages. Table28.34. Waiting in main loop of the statistics collector process. Per-Backend Statistics Functions, Copyright 1996-2023 The PostgreSQL Global Development Group. pg_stat_get_activity ( integer ) setof record. 5mins of Postgres E25: Postgres lock monitoring, LWLocks and the log Waiting to add a message to the shared catalog invalidation queue.
Brian Sampson Obituary, Articles L
Brian Sampson Obituary, Articles L
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