Re: [GENERAL] Scalability to very large databases under Linux

From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: Martin Weinberg <weinberg(at)osprey(dot)phast(dot)umass(dot)edu>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: [GENERAL] Scalability to very large databases under Linux
Date: 1999-06-14 21:59:34
Message-ID: 199906142159.RAA16348@candle.pha.pa.us
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> Dear Folks,
>
> We have been running 6.4.2 under Linux on a dual Xeon box
> with mostly good success. Our current dataset is 20 million records
> of mostly numerical data (56 fields of floats [70%], ints [20%] and
> a few text fields [10%]). The performance is acceptable, the only
> problem so far has been the difficultly in floating type promotion
> "confusing" the optimizer.
>
> Our database is about to expans to 150 million records. Given
> sufficient diskspace (e.g. a larger RAID array) will postgres
> perform on this volume? Are there any gotchas? General comments
> from people with experience with databases of this volume under
> postgres?

The optimizer is overhauled in 6.5, due out in a day or two. I
recommend an upgrade. Optimizer should get less confused.

--
Bruce Momjian | http://www.op.net/~candle
maillist(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026

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