From: Greg Smith <gsmith@gregsmith.com>
To: Guido Neitzer <lists@event-s.net>
Cc: PostgreSQL Performance <pgsql-performance@postgresql.org>
Subject: Re: SSD database benchmarks
Date: Tue, 29 Apr 2008 19:26:02 -0400 (EDT)
Message-ID: <Pine.GSO.4.64.0804291908300.10954@westnet.com> (raw)
In-Reply-To: <AC7BC19A-4DF3-4CC6-A0C9-7F0656BC8F53@event-s.net>
References: <Pine.GSO.4.64.0804291451010.20543@westnet.com>
<AC7BC19A-4DF3-4CC6-A0C9-7F0656BC8F53@event-s.net>
On Tue, 29 Apr 2008, Guido Neitzer wrote:
> They totally missed "mainly write" applications which most of my applications
> are.
Not totally--the very first graph shows that even on random data, 100%
write apps are 1/2 the speed of a regular hard drive.
After poking around the site a bit more they also did some tests with MFT,
some kernel software from Easy Computing that basically uses a write log
disk to improve the write situation:
http://www.bigdbahead.com/?p=44
That version also has a better summary of the results.
MFT is clearly not ready for prime time yet from the general buginess, but
as that approach matures (and more vendors do something similar in
hardware) it will be really interesting to see what happens.
--
* Greg Smith gsmith@gregsmith.com http://www.gregsmith.com Baltimore, MD
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To: pgsql-performance@postgresql.org
Cc: gsmith@gregsmith.com, lists@event-s.net
Subject: Re: SSD database benchmarks
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