Re: Anything to be gained from a 'Postgres Filesystem'?

From: Neil Conway <neilc(at)samurai(dot)com>
To: "Steinar H(dot) Gunderson" <sgunderson(at)bigfoot(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Anything to be gained from a 'Postgres Filesystem'?
Date: 2004-11-05 04:28:39
Message-ID: 1099628919.10449.39.camel@localhost.localdomain
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On Fri, 2004-11-05 at 06:20, Steinar H. Gunderson wrote:
> You mean, like, open(filename, O_DIRECT)? :-)

This disables readahead (at least on Linux), which is certainly not we
want: for the very case where we don't want to keep the data in cache
for a while (sequential scans, VACUUM), we also want aggressive
readahead.

-Neil

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