From: Carlos Moreno <moreno_pg@mochima.com>
To: pgsql-performance@postgresql.org
Subject: Re: compact flash disks?
Date: Wed, 07 Mar 2007 10:48:40 -0500
Message-ID: <45EEDED8.9000804@mochima.com> (raw)
In-Reply-To: <E1HOxqf-0005Mn-Uw@elasmtp-kukur.atl.sa.earthlink.net>
References: <HCEPKPMCAJLDGJIBCLGHOEBCHEAA.james@mansionfamily.plus.com>
<E1HOxqf-0005Mn-Uw@elasmtp-kukur.atl.sa.earthlink.net>
>
> Much better to use flash RAM for read heavy applications.
> Even there you have to be careful that seek performance, not
> throughput, is what is gating your day to day performance with those
> tables.
Isn't precisely there where Flash disks would have *the* big advantage??
I mean, access time is severely held down by the *mechanical* movement of
the heads to the right cylinder on the disk --- that's a brutally large
amount of
time compared to anything else happening on the computer (well, floppy
disks aside, and things like trying-to-break-128-bit-encryption aside
:-)).
Or are these Flash disks so slow that they compare to the HD's latency
figures?
Carlos
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To: pgsql-performance@postgresql.org
Cc: moreno_pg@mochima.com
Subject: Re: compact flash disks?
In-Reply-To: <45EEDED8.9000804@mochima.com>
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