Re: [HACKERS] Fwd: Joins and links
Maarten Boekhold <boekhold@tibco.com>
From: Maarten Boekhold <boekhold@tibco.com>
To: Brian E Gallew <geek+@cmu.edu>
Cc: hackers <pgsql-hackers@postgreSQL.org>
Date: 1999-07-12T13:34:39Z
Lists: pgsql-hackers
> > > Well, I personally dont even know, how I could keep my entire PostgreSQL > > > DB in RAM :) > > > > I thought about doing this once on a Linux box. What I was thinking about was > > creating a large RAM disk, and use that disk together with a physical drive in > > a mirror setup. However, I was never able to create a large enough RAM disk back then [...] > Maarten, PostgreSQL keeps it's data in the filesystem, rather than on > raw disks. Due to the nature of *nix, all you need to do to keep your > entire DB in memory is have enough memory. The buffer cache will do > the rest, for you. Of course, you still need to start it up with -F I know, but there's no *guarantee* that the complete database is going to be in RAM. That's what I was trying to solve. Putting the thing on a RAM disk would guarantee that it is. Maarten -- Maarten Boekhold, boekhold@tibco.com TIBCO Finance Technology Inc. The Atrium Strawinskylaan 3051 1077 ZX Amsterdam, The Netherlands tel: +31 20 3012158, fax: +31 20 3012358 http://www.tibco.com