Re: further testing on IDE drives

From: "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com>
To: Josh Berkus <josh(at)agliodbs(dot)com>
Cc: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Postgresql Performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: further testing on IDE drives
Date: 2003-10-10 18:01:00
Message-ID: Pine.LNX.4.33.0310101200260.19272-100000@css120.ihs.com
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On Fri, 10 Oct 2003, Josh Berkus wrote:

> Bruce,
>
> > Yes. If you were doing multiple WAL writes before transaction fsync,
> > you would be fsyncing every write, rather than doing two writes and
> > fsync'ing them both. I wonder if larger transactions would find
> > open_sync slower?
>
> Want me to test? I've got an ide-based test machine here, and the TPCC
> databases.

Just make sure the drive's write cache is disabled.

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