From: Luke Lonergan <llonergan@greenplum.com>
To: Jim Nasby <jnasby@pervasive.com>
To: pgsql-performance@postgresql.org
Subject: Re: 1 TB of memory
Date: Thu, 16 Mar 2006 22:44:25 -0800
Message-ID: <C03F9AC9.1F5EE%llonergan@greenplum.com> (raw)
In-Reply-To: <8B16F5C8-DFC8-4694-902C-AE584E490530@pervasive.com>
Jim,
> PostgreSQL tuned to the max and still too slow? Database too big to
> fit into memory? Here's the solution! http://www.superssd.com/
> products/tera-ramsan/
With a single 3 Gbyte/second infiniband connection to the device?
You'd be better off with 4 x $10K servers that do 800MB/s from disk each and
a Bizgres MPP - then you'd do 3.2GB/s (faster than the SSD) at a price 1/10
of the SSD, and you'd have 24TB of RAID5 disk under you.
Plus - need more speed? Add 12 more servers, and you'd run at 12.8GB/s and
have 96TB of disk to work with, and you'd *still* spend less on HW and SW
than the SSD.
- Luke
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To: pgsql-performance@postgresql.org
Cc: llonergan@greenplum.com, jnasby@pervasive.com
Subject: Re: 1 TB of memory
In-Reply-To: <C03F9AC9.1F5EE%llonergan@greenplum.com>
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