From: Greg Smith <gsmith@gregsmith.com>
To: Merlin Moncure <mmoncure@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Intel's X25-M SSD
Date: Fri, 19 Sep 2008 23:23:32 -0400 (EDT)
Message-ID: <Pine.GSO.4.64.0809192316340.19112@westnet.com> (raw)
In-Reply-To: <b42b73150809081659n713b0780w2fe6820aa563b8a0@mail.gmail.com>
References: <Pine.GSO.4.64.0809081850050.5786@westnet.com>
<b42b73150809081659n713b0780w2fe6820aa563b8a0@mail.gmail.com>
On Mon, 8 Sep 2008, Merlin Moncure wrote:
> What's interesting about the X25 is that they managed to pull the
> numbers they got out of a MLC flash product. They managed this with a
> DRAM buffer and the custom controller.
I finally found a good analysis of what's wrong with most of the cheap MLC
drives:
http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3403&p=7
240ms random write latency...wow, no wonder I keep hearing so many reports
of cheap SSD just performing miserably. JMicron is one of those companies
I really avoid, never seen a design from them that wasn't cheap junk.
Shame their awful part is in so many of the MLC flash products.
--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD
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To: pgsql-performance@postgresql.org
Cc: gsmith@gregsmith.com, mmoncure@gmail.com
Subject: Re: Intel's X25-M SSD
In-Reply-To: <Pine.GSO.4.64.0809192316340.19112@westnet.com>
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