e7a9496de9
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. cf54a2c00254). This commit relies on de3a2ea3b264, 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
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
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