Re: [Qemu-devel] Block I/O optimizations

[Stefan Hajnoczi]

On Thu, Feb 21, 2013 at 9:11 AM, Stefan Hajnoczi <address@hidden> wrote:
> On Mon, Feb 18, 2013 at 7:19 PM, Loic Dachary <address@hidden> wrote:
>> I recently tried to figure out the best and easiest ways to increase block 
>> I/O performances with qemu. Not being a qemu expert, I expected to find a 
>> few optimization tricks. Much to my surprise, it appears that there are many 
>> significant improvements being worked on. This is excellent news :-)
>>
>> However, I'm not sure I understand how they all fit together. It's probably 
>> quite obvious from the developer point of view but I would very much 
>> appreciate an overview of how dataplane, vhost-blk, ELVIS etc. should be 
>> used or developed to maximize I/O performances. Are there documents I should 
>> read ? If not, would someone be willing to share bits of wisdom ?
>
> Hi Loic,
> There will be more information on dataplane shortly.  I'll write up a
> blog post and share the link with you.

Hi Loic,
Here is an overview of virtio-blk data plane and how to use it:
http://blog.vmsplice.net/2013/03/new-in-qemu-14-high-performance-virtio.html

Stefan