On Thu, Dec 27, 2018 at 08:20:23PM -0500, Jeff Janes wrote:
> Also, you would want to use the newest version of PostgreSQL, as 9.6
> doesn't have parallel query, which is much more generally applicable than
> effective_io_concurrency is.
It *does* have parallel query (early, somewhat limited support),
but not enabled by default.
https://www.postgresql.org/docs/9.6/parallel-query.html
There was some confusion due to being disabled in 9.6, only:
https://www.postgresql.org/message-id/20180620151349.GB7500%40momjian.us
Cheers,
Justin