Michael Paquier e7a9496de9 Add two attributes to pg_stat_database for parallel workers activity ... Two attributes are added to pg_stat_database: * parallel_workers_to_launch, counting the total number of parallel workers that were planned to be launched. * parallel_workers_launched, counting the total number of parallel workers actually launched. The ratio of both fields can provide hints that there are not enough slots available when launching parallel workers, also useful when pg_stat_statements is not deployed on an instance (i.e. cf54a2c002). This commit relies on de3a2ea3b2, that has added two fields to EState, that get incremented when executing Gather or GatherMerge nodes. A test is added in select_parallel, where parallel workers are spawned. Bump catalog version. Author: Benoit Lobréau Discussion: https://postgr.es/m/783bc7f7-659a-42fa-99dd-ee0565644e25@dalibo.com		2024-11-11 10:40:48 +09:00
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src	Add two attributes to pg_stat_database for parallel workers activity	2024-11-11 10:40:48 +09:00
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