XFS on SSD, log/metadat on spindle?

[Emmanuel Florac]

Le Mon, 27 Sep 2010 19:46:54 +0100 vous écriviez:

>    anyone have experience with (c)xfs on SSD enabled raid?    LSI
> 7900 (aka IS4600 aka IBM DS5300) with mixed SSD and FC drives.  LSI
> FC4600 enclosure.
> 

Yes, it works well, and about 50% faster on small IO (tested with
Adaptec 52445 though). Actually it largely depends upon the way you
distribute IO on the array, but it's basically comparable to a huge
read cache.

I also tried putting the XFS log on an SSD a couple of years ago, it's
really fast (but quite a waste of a good SSD).

-- 
------------------------------------------------------------------------
Emmanuel Florac     |   Direction technique
                    |   Intellique
                    |	<eflorac at intellique.com>
                    |   +33 1 78 94 84 02
------------------------------------------------------------------------