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Re: Inlining comparators as a performance optimisation

From: Peter Geoghegan <peter(at)2ndquadrant(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, PG Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Inlining comparators as a performance optimisation
Date: 2011-12-05 00:14:33
Message-ID: CAEYLb_W0aQ-7-riy=jg5BYGO4e-wuYqZo95FrQeZ5-uqB7RdLg@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On 4 December 2011 19:17, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> I have not done any performance testing on this patch, but it might be
> interesting to check it with the same test cases Peter's been using.

I've attached a revision of exactly the same benchmark run to get the
results in results_server.ods .

You'll see very similar figures to results_server.ods for HEAD and for
my patch, as you'd expect. I think the results speak for themselves. I
maintain that we should use specialisations - that's where most of the
benefit is to be found.

-- 
Peter Geoghegan       http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training and Services

Attachment: results_server_new.ods
Description: application/vnd.oasis.opendocument.spreadsheet (12.6 KB)

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