From mboxrd@z Thu Jan  1 00:00:00 1970
From: Anthony Liguori <anthony@codemonkey.ws>
Subject: Re: KVM performance vs. Xen
Date: Thu, 30 Apr 2009 08:47:10 -0500
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Cc: Avi Kivity <avi@redhat.com>, kvm-devel <kvm@vger.kernel.org>
To: Andrew Theurer <habanero@linux.vnet.ibm.com>
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Andrew Theurer wrote:
>>
>> Really, I think linux-aio support can help here.
> Yes, I think that would work for real block devices, but would that 
> help for files?  I am using real block devices right now, but it would 
> be nice to also see a benefit for files in a file-system.  Or maybe I 
> am mis-understanding this, and linux-aio can be used on files?

For cache=off, with some file systems, yes.  But not for 
cache=writethrough/writeback.

Regards,

Anthony Liguori