On Sat, Apr 23, 2016 at 8:58 PM, Bruce Momjian <br...@momjian.us> wrote: > Why is the parallelism variable called "max_parallel_degree"? Is that a > descriptive name? What does "degree" mean? Why is it not called > "max_parallel_workers"?
I also think that "max_parallel_workers" works better. While certain other systems have a concept of a "maximum parallel degree", it is not the same. Those other systems disable parallelism altogether when "max parallel degree" is 1, whereas Postgres uses 1 parallel worker along with a leader process. And so, parallelism *will* still be used on Postgres. That's a pretty significant difference. -- Peter Geoghegan -- Sent via pgsql-hackers mailing list (email@example.com) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers