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Date: Fri, 30 May 2014 15:58:00 +0200
From: Zdenek Kabelac <zkabelac@redhat.com>
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Subject: Re: [linux-lvm] Testing the new LVM cache feature
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To: "Richard W.M. Jones" <rjones@redhat.com>, Heinz Mauelshagen <heinzm@redhat.com>
Cc: thornber@redhat.com, Mike Snitzer <snitzer@redhat.com>, LVM general discussion and development <linux-lvm@redhat.com>

Dne 30.5.2014 15:54, Richard W.M. Jones napsal(a):
> I'm attaching 3 tests that I have run so (hopefully) you can see
> what I'm observing, or point out if I'm making a mistake.
>


I'd have asked - is there any difference in the test perfomance if you use
ramdisk device for your cache metadata device.
(So  _cdata stays on  'ssd', just _cmeta is located on i.e. loop0 with backend 
file in your tmpfs ramdisk device ?)

Zdenek