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Re: [PATCH] Using pread instead of lseek (with analysis)

From: "Qingqing Zhou" <zhouqq(at)cs(dot)toronto(dot)edu>
To: pgsql-patches(at)postgresql(dot)org
Subject: Re: [PATCH] Using pread instead of lseek (with analysis)
Date: 2005-10-09 10:58:11
Message-ID: di98cc$29i4$1@news.hub.org (view raw or flat)
Thread:
Lists: pgsql-patches
"Martijn van Oosterhout" <kleptog(at)svana(dot)org> wrote
>
> Below is a patch that tries to determine (for linux) if the pread is
> emulated or not (using an autoconf test), and if so use it instead of
> lseek.

Just FYI, this was proposed 2 years ago:

http://archives.postgresql.org/pgsql-patches/2003-02/msg00197.php

The basic problem I read from the above thread is that it does not give 
enough performance proofs on *various* platforms.

Regards,
Qingqing 



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