From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:35155) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ULZQu-00014S-M7 for qemu-devel@nongnu.org; Fri, 29 Mar 2013 09:33:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ULZQt-0007RA-A6 for qemu-devel@nongnu.org; Fri, 29 Mar 2013 09:33:28 -0400 Received: from smtp.dmail.dachary.org ([86.65.39.20]:37373) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ULZQt-0007Qs-3T for qemu-devel@nongnu.org; Fri, 29 Mar 2013 09:33:27 -0400 Received: from [10.8.0.50] (unknown [10.8.0.50]) by smtp.dmail.dachary.org (Postfix) with ESMTPS id 5B06926394 for ; Fri, 29 Mar 2013 14:33:23 +0100 (CET) Message-ID: <51559823.9090703@dachary.org> Date: Fri, 29 Mar 2013 14:33:23 +0100 From: Loic Dachary MIME-Version: 1.0 References: <512270C4.3090401@dachary.org> In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigD075ED1245B82C830D94E928" Subject: Re: [Qemu-devel] Block I/O optimizations List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigD075ED1245B82C830D94E928 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Stefan, This is excellent ! Thank you very much :-) Cheers On 03/13/2013 04:21 PM, Stefan Hajnoczi wrote: > On Thu, Feb 21, 2013 at 9:11 AM, Stefan Hajnoczi w= rote: >> On Mon, Feb 18, 2013 at 7:19 PM, Loic Dachary 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 ther= e are many significant improvements being worked on. This is excellent ne= ws :-) >>> >>> However, I'm not sure I understand how they all fit together. It's pr= obably quite obvious from the developer point of view but I would very mu= ch 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. >=20 > 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= =2Ehtml >=20 > Stefan >=20 >=20 --=20 Lo=EFc Dachary, Artisan Logiciel Libre --------------enigD075ED1245B82C830D94E928 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlFVmCMACgkQ8dLMyEl6F20T3gCgscCrgMTyf6jgYHbk2Ry12EQQ lw8AoKH/FFE3ai4ppI8G95dS8+lAJq8Q =YjCl -----END PGP SIGNATURE----- --------------enigD075ED1245B82C830D94E928--