From: Tom Lane <tgl@sss.pgh.pa.us>
To: carlosreimer@terra.com.br
Cc: pgsql-performance@postgresql.org
Subject: Re: Initial database loading and IDE x SCSI
Date: Fri, 02 Jun 2006 14:43:00 -0400
Message-ID: <9064.1149273780@sss.pgh.pa.us> (raw)
In-Reply-To: <PEEPKDFEHHEMKBBFPOOKCEHCCPAA.carlosreimer@terra.com.br>
References: <PEEPKDFEHHEMKBBFPOOKCEHCCPAA.carlosreimer@terra.com.br>
<carlosreimer@terra.com.br> writes:
> I would like to know if my supposition is right.
> Considering an environment with only one hard disk attached to a server, an
> initial loading of the database probably is much faster using an IDE/ATA
> interface with write-back on than using an SCSI interface. That´s because of
> the SCSI command interface overhead.
I *seriously* doubt that.
If you see a difference in practice it's likely got more to do with the
SCSI drive not lying about write-complete ...
regards, tom lane
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To: pgsql-performance@postgresql.org
Cc: tgl@sss.pgh.pa.us, carlosreimer@terra.com.br
Subject: Re: Initial database loading and IDE x SCSI
In-Reply-To: <9064.1149273780@sss.pgh.pa.us>
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