| 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: | 4F1D4B99.1040902@gmail.com |
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| Thread: | |
| 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' http://www.vldb.org/pvldb describes a experimental
implementation in PostgreSQL.
regards,
Yeb
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