Re: Cheap RAM disk? - Mailing list pgsql-performance

From John A Meinel
Subject Re: Cheap RAM disk?
Date
Msg-id 42E680B3.6020303@arbash-meinel.com
Whole thread Raw
In response to Re: Cheap RAM disk?  ("Luke Lonergan" <llonergan@greenplum.com>)
List pgsql-performance
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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