Re: Re^3 : Solaris Performance - 64 bit puzzle

From: Andrew Sullivan <andrew(at)libertyrms(dot)info>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: Re^3 : Solaris Performance - 64 bit puzzle
Date: 2002-06-05 15:36:31
Message-ID: 20020605113631.H6345@mail.libertyrms.com
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On Wed, Jun 05, 2002 at 08:50:09PM +1200, Mark kirkwood wrote:
>
> >What I'm now puzzled about is why just exercising the right kind of
> >sort didn't exhibit the slowdown.
>
> I wonder if the size of your sorted dataset ( i.e. all 1000000 rows) is
> the reason - too big to fit into sort_mem, so that temporary files are

Good point. That's probably it. I should think harder when
doing one-off tests, because I didn't tune the system at all.

> in sort speed - although that does not explain how your resuts were
> consistently *faster* for the Solaris qsort.

True.

A
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