[Fwd: Re: CPU types and queries...]

And, of course, you VACUUM ANALYZE each database nightly...

-----Forwarded Message-----

> From: Ron Johnson <ron(dot)l(dot)johnson(at)cox(dot)net>
> To: James Kelty <jamesk(at)ashlandagency(dot)com>
> Subject: Re: [NOVICE] CPU types and queries...
> Date: 29 May 2002 18:27:04 -0500
>
> On Wed, 2002-05-29 at 16:00, James Kelty wrote:
> >
> >
> > Hello,
> >
> > A question was recently brought up at my place of business about CPU
> > types, and Postgres.
> >
> > We have Two systems, both running Red Hat 7.2, both with 4Gig's of PC133
> > memory.
> >
> > The first system has TWO 933Mhz Intel PIII (Coppermine) procs, and a
> > certain query returns VERY fast, around 2 seconds.
> >
> > The second system has TWO 700Mhx Intel PIII Xeon (Cascades) procs, but
> > the same query from the same code from the same web server takes approx.
> > 10-12 seconds.
> >
> > Is there REALLY that much difference between the two proc types? Will
> > 233Mhz actually make THAT much of a difference?
> >
> > What about the big Xeon cache? 1Mb vs. the Coppermine 256k cache?
>
> This is presuming that the databases are the same size, and reside
> on exactly the same kind of disks, controllers, shared_buffers size,
> indexes, number of rows, etc, right?

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