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noop or deadline on an SSD?

To: xfs@xxxxxxxxxxx
Subject: noop or deadline on an SSD?
From: Pedro Ribeiro <pedrib@xxxxxxxxx>
Date: Sun, 21 Apr 2013 23:38:59 +0100
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Hi all,

I recently moved my system to an SSD. 

I decided to do what the XFS FAQ says (http://xfs.org/index.php/XFS_FAQ#Q:_I_want_to_tune_my_XFS_filesystems_for_.3Csomething.3E) and I used all the defaults for creating the new XFS file systems. 

However the paragraph above also reads: "As of kernel 3.2.12, the default i/o scheduler, CFQ, will defeat much of the parallelization in XFS."

Ok, I also read that with an SSD I should be using noop or deadline. And which one of these would perform better with XFS with an SSD? And while I'm at it, which one would be best for a  mechanical drive?

Thanks in advance.

Regards,
Pedro
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