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Re: Parallel query execution

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Peter Geoghegan <peter(at)2ndquadrant(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Parallel query execution
Date: 2013-01-15 22:45:15
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Lists: pgsql-hackers
On Tue, Jan 15, 2013 at 10:39:10PM +0000, Peter Geoghegan wrote:
> On 15 January 2013 22:14, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> > I believe it is time to start adding parallel execution to the backend.
> > We already have some parallelism in the backend:
> > effective_io_concurrency and helper processes.  I think it is time we
> > start to consider additional options.
> A few months back, I remarked [1] that speeding up sorting using
> pipelining and asynchronous I/O was probably parallelism low-hanging
> fruit. That hasn't changed, though I personally still don't have the
> bandwidth to look into it in a serious way.
> [1]

OK, I added the link to the wiki.

  Bruce Momjian  <bruce(at)momjian(dot)us>

  + It's impossible for everything to be true. +

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