pg_stat_resqueues
The pg_stat_resqueues view allows administrators to view metrics about a resource queue's workload over time. To allow statistics to be collected for this view, you must enable the stats_queue_level server configuration parameter on the Greenplum Database master instance. Enabling the collection of these metrics does incur a small performance penalty, as each statement submitted through a resource queue must be logged in the system catalog tables.
| column | type | references | description |
|---|---|---|---|
| queueoid | oid | The OID of the resource queue. | |
| queuename | name | The name of the resource queue. | |
| n_queries_exec | bigint | Number of queries submitted for execution from this resource queue. | |
| n_queries_wait | bigint | Number of queries submitted to this resource queue that had to wait before they could execute. | |
| elapsed_exec | bigint | Total elapsed execution time for statements submitted through this resource queue. | |
| elapsed_wait | bigint | Total elapsed time that statements submitted through this resource queue had to wait before they were executed. |