From: Martijn van Oosterhout <kleptog@svana.org>
To: Simon Riggs <simon@2ndquadrant.com>
Cc: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Ron Peacetree <rjpeace@earthlink.net>
Cc: pgsql-hackers@postgresql.org
Subject: Re: [PERFORM] A Better External Sort?
Date: Tue, 4 Oct 2005 12:04:56 +0200
Message-ID: <20051004100441.GC17589@svana.org> (raw)
In-Reply-To: <1128376292.8603.142.camel@localhost.localdomain>
References: <18329659.1128188552696.JavaMail.root@elwamui-polski.atl.sa.earthlink.net>
<20051001215602.GG13830@svana.org>
<29837.1128223567@sss.pgh.pa.us>
<20051002123240.GA30492@svana.org>
<20051002193835.GJ30492@svana.org>
<1128376292.8603.142.camel@localhost.localdomain>
On Mon, Oct 03, 2005 at 10:51:32PM +0100, Simon Riggs wrote:
> > Basically, I recommend adding "-Winline -finline-limit-1500" to the
> > default build while we discuss other options.
>
> I add -Winline but get no warnings. Why would I use -finline-limit-1500?
>
> I'm interested, but uncertain as to what difference this makes. Surely
> using -O3 works fine?
Different versions of gcc have different ideas of when a function can
be inlined. From my reading of the documentation, this decision is
independant of optimisation level. Maybe your gcc version has a limit
higher than 1500 by default.
--
Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/> Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a
> tool for doing 5% of the work and then sitting around waiting for someone
> else to do the other 95% so you can sue them.
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: kleptog@svana.org, simon@2ndquadrant.com, tgl@sss.pgh.pa.us, rjpeace@earthlink.net, pgsql-hackers@postgresql.org
Subject: Re: [PERFORM] A Better External Sort?
In-Reply-To: <20051004100441.GC17589@svana.org>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox