From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52984) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YkvOv-0002Gz-U8 for qemu-devel@nongnu.org; Wed, 22 Apr 2015 10:13:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YkvOr-0005Ah-FR for qemu-devel@nongnu.org; Wed, 22 Apr 2015 10:13:17 -0400 Received: from relay.parallels.com ([195.214.232.42]:38117) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YkvOr-0005A6-7n for qemu-devel@nongnu.org; Wed, 22 Apr 2015 10:13:13 -0400 Message-ID: <5537AC6D.4080903@openvz.org> Date: Wed, 22 Apr 2015 17:13:01 +0300 From: "Denis V. Lunev" MIME-Version: 1.0 References: <1426069701-1405-1-git-send-email-den@openvz.org> <1426069701-1405-23-git-send-email-den@openvz.org> <20150422141128.GX27617@stefanha-thinkpad.redhat.com> In-Reply-To: <20150422141128.GX27617@stefanha-thinkpad.redhat.com> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [PATCH 22/27] block/parallels: improve image reading performance List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Stefan Hajnoczi Cc: Kevin Wolf , qemu-devel@nongnu.org, Stefan Hajnoczi On 22/04/15 17:11, Stefan Hajnoczi wrote: > On Wed, Mar 11, 2015 at 01:28:16PM +0300, Denis V. Lunev wrote: >> Try to perform IO for the biggest continuous block possible. >> The performance for sequential read is increased from 220 Gb/sec to >> 360 Gb/sec for continous image on my SSD HDD. > Please, can I have your SSD drive? :) > > Did you mean MB/sec? yes... This was so wonderful to write these numbers. I am dreaming. OK, will fix that. >> Signed-off-by: Denis V. Lunev >> Reviewed-by: Roman Kagan >> CC: Kevin Wolf >> CC: Stefan Hajnoczi >> --- >> block/parallels.c | 37 ++++++++++++++++++++++++++++++++----- >> 1 file changed, 32 insertions(+), 5 deletions(-) > Reviewed-by: Stefan Hajnoczi