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Re: Multithread Query Planner

From: Yeb Havinga <yebhavinga(at)gmail(dot)com>
To: Frederico <zepfred(at)gmail(dot)com>
Cc: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Multithread Query Planner
Date: 2012-01-23 11:59:21
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On 2012-01-13 21:14, Frederico wrote:
> Hi folks.
> Is there any restriction in create and start threads inside Postgres?
> I'm trying to develop a multithread planner, and some times is raised a exception of access memory.
> I'm debugging the code to see if is a bug in the planner, but until now, I still not found. I tried to use the same memory context of root process and create a new context to each new thread, but doesn't worked.
> Any tips?

Not sure if it is of any use to you, but the vldb paper 'Parallelizing 
Query Optimization' describes a experimental 
implementation in PostgreSQL.


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