On Sat, Apr 3, 2021 at 11:12:01AM -0400, Bruce Momjian wrote: > On Sat, Apr 3, 2021 at 08:38:18PM +0530, aditya desai wrote: > > Hi Justin, > > Yes, force_parallel_mode is on. Should we set it off? > > Yes. I bet someone set it without reading our docs: > > https://www.postgresql.org/docs/13/runtime-config-query.html#RUNTIME-CONFIG-QUERY-OTHER > > --> Allows the use of parallel queries for testing purposes even in cases > --> where no performance benefit is expected. > > We might need to clarify this sentence to be clearer it is _only_ for > testing. Also, I suggest you review _all_ changes that have been made > to the server since I am worried other unwise changes might also have > been made. This brings up an issue we see occasionally. You can either leave everything as default, get advice on which defaults to change, or study each setting and then change defaults. Changing defaults without study often leads to poor configurations, as we are seeing here. The lucky thing is that you noticed a slow query and found the misconfiguration, but I am sure there are many servers where misconfiguration is never detected. I wish I knew how to improve this situation, but user education seems to be all we can do. -- Bruce Momjian <bruce@xxxxxxxxxx> https://momjian.us EDB https://enterprisedb.com If only the physical world exists, free will is an illusion.
