| From: | John A Meinel <john(at)arbash-meinel(dot)com> |
|---|---|
| To: | Luke Lonergan <llonergan(at)greenplum(dot)com> |
| Cc: | Postgresql Performance <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: Cheap RAM disk? |
| Date: | 2005-07-26 18:28:03 |
| Message-ID: | 42E680B3.6020303@arbash-meinel.com |
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| Thread: | |
| Lists: | 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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