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From: Steinar H. Gunderson <sgunderson@bigfoot.com>
To: pgsql-performance@postgresql.org
Subject: Re: Postgresql Performance on an HP DL385 and
Date: Wed, 16 Aug 2006 00:23:23 +0200
Message-ID: <20060815222323.GA18180@uio.no> (raw)
In-Reply-To: <20060815222024.GV21363@pervasive.com>
References: <20060814170545.GG27928@pervasive.com>
	<20060814170902.GN2900@mathom.us>
	<20060815162926.GS27928@pervasive.com>
	<20060815172645.GU2900@mathom.us>
	<20060815183327.GC12834@mark.mielke.cc>
	<20060815190254.GW2900@mathom.us>
	<20060815193951.GA13695@mark.mielke.cc>
	<20060815205857.GY2900@mathom.us>
	<20060815213842.GA15210@mark.mielke.cc>
	<20060815222024.GV21363@pervasive.com>

On Tue, Aug 15, 2006 at 05:20:25PM -0500, Jim C. Nasby wrote:
> This is only valid if the pre-allocation is also fsync'd *and* fsync
> ensures that both the metadata and file data are on disk. Anyone
> actually checked that? :)

fsync() does that, yes. fdatasync() (if it exists), OTOH, doesn't sync the
metadata.

/* Steinar */
-- 
Homepage: http://www.sesse.net/

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