Re: Using quicksort for every external sort run

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Peter Geoghegan <pg(at)heroku(dot)com>
Cc: Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Robert Haas <robertmhaas(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>
Subject: Re: Using quicksort for every external sort run
Date: 2015-08-20 15:15:59
Message-ID: CANP8+j+0KfpiteUArHozOth4w9bRGWYKKawVoTz9Q+tHfObmUg@mail.gmail.com
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On 20 August 2015 at 03:24, Peter Geoghegan <pg(at)heroku(dot)com> wrote:

>
> The patch is ~3.25x faster than master

I've tried to read this post twice and both times my work_mem overflowed.
;-)

Can you summarize what this patch does? I understand clearly what it
doesn't do...

--
Simon Riggs http://www.2ndQuadrant.com/
<http://www.2ndquadrant.com/>
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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