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From: Justin Pryzby <pryzby@telsasoft.com>
To: Jeff Janes <jeff.janes@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: PostgreSQL Read IOPS limit per connection
Date: Thu, 27 Dec 2018 19:29:00 -0600
Message-ID: <20181228012900.GH30382@telsasoft.com> (raw)
In-Reply-To: <CAMkU=1yZpjUQbGE8KbbM3x3GJzzv95o0VTxryAmot15jWusVaA@mail.gmail.com>
References: <CAHxH9rOz7YaDynZLG1w0TRah47ATrPKrQHWsMOb8AnF5qVs--Q@mail.gmail.com>
	<CAMkU=1yZpjUQbGE8KbbM3x3GJzzv95o0VTxryAmot15jWusVaA@mail.gmail.com>

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




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