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Re: [pgsql-patches] O_DIRECT support for Windows

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp>
Cc: pgsql-patches(at)postgresql(dot)org
Subject: Re: [pgsql-patches] O_DIRECT support for Windows
Date: 2007-04-02 20:39:00
Message-ID: 200704022039.l32Kd0N10347@momjian.us (view raw or flat)
Thread:
Lists: pgsql-hackerspgsql-patches
Your patch has been added to the PostgreSQL unapplied patches list at:

	http://momjian.postgresql.org/cgi-bin/pgpatches

It will be applied as soon as one of the PostgreSQL committers reviews
and approves it.

---------------------------------------------------------------------------


ITAGAKI Takahiro wrote:
> The attached is a patch to define O_DIRECT by ourselves on Windows,
> and to map O_DIRECT to FILE_FLAG_NO_BUFFERING.
> 
> There will be a consistency in our support between Windows and other OSes
> that have O_DIRECT. Also, there is the following comment that says, I read,
> we should do so.
> | handle other flags? (eg FILE_FLAG_NO_BUFFERING/FILE_FLAG_WRITE_THROUGH)
> 
> Is this worth doing? Do we need more performance reports for the change?
> 
> Regards,
> ---
> ITAGAKI Takahiro
> NTT Open Source Software Center

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-- 
  Bruce Momjian  <bruce(at)momjian(dot)us>          http://momjian.us
  EnterpriseDB                               http://www.enterprisedb.com

  + If your life is a hard drive, Christ can be your backup. +

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