Re: Multiple sorts in a query

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Greg Stark <greg(dot)stark(at)enterprisedb(dot)com>
Cc: Greg Stark <stark(at)enterprisedb(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Multiple sorts in a query
Date: 2009-05-20 08:16:05
Message-ID: 1242807365.27960.45.camel@ebony.2ndQuadrant
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers


On Tue, 2009-05-19 at 16:49 -0400, Greg Stark wrote:

> Well I'm just saying if you realloc a x kilobyte block into a 2x block
> and the allocator can't expand it and has to copy then it seems
> inevitable.

OK, understood.

So there is grounds at least for an investigation into how that works
and whether it is as inefficient as we think it might be.

--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Andres Freund 2009-05-20 08:23:34 Re: Multiple sorts in a query
Previous Message Simon Riggs 2009-05-20 08:14:19 Re: Multiple sorts in a query