From: John A Meinel <john@arbash-meinel.com>
To: Luke Lonergan <llonergan@greenplum.com>
Cc: Postgresql Performance <pgsql-performance@postgresql.org>
Subject: Re: Cheap RAM disk?
Date: Tue, 26 Jul 2005 13:28:03 -0500
Message-ID: <42E680B3.6020303@arbash-meinel.com> (raw)
In-Reply-To: <BF0BCDAB.9FC9%llonergan@greenplum.com>
References: <BF0BCDAB.9FC9%llonergan@greenplum.com>
Luke Lonergan wrote:
> Yup - interesting and very niche product - it seems like it's only obvious
> application is for the Postgresql WAL problem :-)
Well, you could do it for any journaled system (XFS, JFS, ext3, reiserfs).
But yes, it seems specifically designed for a battery backed journal.
Though the article reviews it for very different purposes.
Though it was a Windows review, and I don't know of any way to make NTFS
use a separate device for a journal. (Though I expect it is possible
somehow).
John
=:->
>
> The real differentiator is the battery backup part. Otherwise, the
> filesystem caching is more effective, so put the RAM on the motherboard.
>
> - Luke
>
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To: pgsql-performance@postgresql.org
Cc: john@arbash-meinel.com, llonergan@greenplum.com
Subject: Re: Cheap RAM disk?
In-Reply-To: <42E680B3.6020303@arbash-meinel.com>
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