| From: | Peter Geoghegan <peter(at)2ndquadrant(dot)com> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Parallel query execution |
| Date: | 2013-01-15 22:39:10 |
| Message-ID: | CAEYLb_V20Ae8+tn7umQJVXYu0YqD-t4i-wGE_o2raTodfOW9BA@mail.gmail.com |
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| Lists: | pgsql-hackers |
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.
--
Peter Geoghegan http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training and Services
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