Re: Support Parallel Query Execution in Executor - Mailing list pgsql-hackers

From Jonah H. Harris
Subject Re: Support Parallel Query Execution in Executor
Date
Msg-id 36e682920604081045v1cd0c1der3662933bf298a233@mail.gmail.com
Whole thread Raw
In response to Re: Support Parallel Query Execution in Executor  (Markus Schiltknecht <markus@bluegap.ch>)
Responses Re: Support Parallel Query Execution in Executor  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
On 4/8/06, Markus Schiltknecht <markus@bluegap.ch> wrote:
> ACK. As long as processes, signals and shared memory are used this could
> be as portable as PostgreSQL is now.

This is certainly the case.

> Ehm.. which additional I/O cost? Or do you count inter-process
> communication to I/O?

Inter-process will add a minimal amount, but if it's done correctly,
you'll still end up ahead.

> I'd like to help teaching PostgreSQL the art of parallel query
> execution.

Cool, we're not at the communication-level yet, but your help would be
appreciated.

> In case you're interested I'll compile a patch for review.

Surely!

--
Jonah H. Harris, Database Internals Architect
EnterpriseDB Corporation
732.331.1324


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