Re: How can sort performance be so different

From: Peter Geoghegan <pg(at)bowt(dot)ie>
To: Bob Jolliffe <bobjolliffe(at)gmail(dot)com>
Cc: Merlin Moncure <mmoncure(at)gmail(dot)com>, pgsql-performance(at)lists(dot)postgresql(dot)org
Subject: Re: How can sort performance be so different
Date: 2019-02-21 00:54:52
Message-ID: CAH2-Wz=6WVKc5XMcTnLrENx0exdEzvP-87RXcF3XbFHYJ0gfUA@mail.gmail.com
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On Wed, Feb 20, 2019 at 2:25 PM Peter Geoghegan <pg(at)bowt(dot)ie> wrote:
> I suspect that the reasons why the Lao locale sorts so much slower may
> also have something to do with the intrinsic cost of supporting more
> complicated rules.

I strongly suspect that it has something to do with the issue
described here specifically:

http://userguide.icu-project.org/collation/concepts#TOC-Thai-Lao-reordering
--
Peter Geoghegan

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