Re: Using quicksort for every external sort run

From: Peter Geoghegan <pg(at)heroku(dot)com>
To: Greg Stark <stark(at)mit(dot)edu>
Cc: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Using quicksort for every external sort run
Date: 2016-04-02 22:22:11
Message-ID: CAM3SWZQgVX93vqn6S1Je_Aybux0N+pKq28oom8CFH2RepDkOoA@mail.gmail.com
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On Sat, Apr 2, 2016 at 3:20 PM, Greg Stark <stark(at)mit(dot)edu> wrote:
> There are also some weird cases in this list where there's a
> significant regression at 32MB but not at 8MB. I would like to see
> 16MB and perhaps 12MB and 24MB. They would help understand if these
> are just quirks or there's a consistent pattern.

I'll need to drill down to trace_sort output to see what happened there.

--
Peter Geoghegan

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