From: | Dave Cramer <pg(at)fastcrypt(dot)com> |
---|---|
To: | Frank Wiles <frank(at)wiles(dot)org> |
Cc: | Josh Berkus <josh(at)agliodbs(dot)com>, pgsql-performance(at)postgresql(dot)org |
Subject: | Re: Low Performance for big hospital server .. |
Date: | 2005-01-06 17:35:33 |
Message-ID: | 41DD76E5.1090806@fastcrypt.com |
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Lists: | pgsql-performance |
Reading can be worse for a normalized db, which is likely what the
developers were concerned about.
One always have to be careful to measure the right thing.
Dave
Frank Wiles wrote:
>On Thu, 6 Jan 2005 09:06:55 -0800
>Josh Berkus <josh(at)agliodbs(dot)com> wrote:
>
>
>
>>I can't tell you how many times I've seen this sort of thing. And
>>the developers always tell me "Well, we denormalized for performance
>>reasons ... "
>>
>>
>
> Now that's rich. I don't think I've ever seen a database perform
> worse after it was normalized. In fact, I can't even think of a
> situation where it could!
>
> ---------------------------------
> Frank Wiles <frank(at)wiles(dot)org>
> http://www.wiles.org
> ---------------------------------
>
>
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--
Dave Cramer
http://www.postgresintl.com
519 939 0336
ICQ#14675561
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