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Re: One process per session lack of sharing - Mailing list pgsql-hackers

From	Jan Wieck
Subject	Re: One process per session lack of sharing
Date	July 17, 2016 16:30:06
Msg-id	CAGBW59cdfocRGYTTzri7mOKKORqhFku16RSGsBjt6sXYp575=A@mail.gmail.com Whole thread Raw
In response to	Re: One process per session lack of sharing (Craig Ringer <craig@2ndquadrant.com>)
List	pgsql-hackers

On Sun, Jul 17, 2016 at 3:23 AM, Craig Ringer <craig@2ndquadrant.com> wrote:

Lots more could be shared, too. Cached plans, for example.

But the fact that PostgreSQL has transactional DDL complicates things like

a shared plan cache and shared PL/pgSQL execution trees. Those things are

much easier in a trivial database implementation, where an ALTER TABLE is

just trampling over a running transaction.

Regards, Jan

Jan Wieck
Senior Postgres Architect

From: Robert Haas
Date: 17 July 2016, 15:55:44
Subject: Re: rethinking dense_alloc (HashJoin) as a memory context

From: Simon Riggs
Date: 17 July 2016, 16:44:17
Subject: Re: One process per session lack of sharing