WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

[Xen-devel] qcow disk performance not exceeding 3.0MB/s

To: xen-devel@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-devel] qcow disk performance not exceeding 3.0MB/s
From: Stefan de Konink <skinkie@xxxxxxxxx>
Date: Sun, 13 Jul 2008 16:27:41 +0200
Delivery-date: Sun, 13 Jul 2008 07:28:05 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: Thunderbird 2.0.0.14 (X11/20080519)
I am using a sparse image with a backed file. Using a dd inside domU the performance doesn't exceed 3.0MB/s. If I try this on an NFS mount the performance (in an uninitialized qcow image) is below 1.0MB/s.

Is this as expected? Are there currently any improvements in the Xen 3.3 hg repo that increase speed in the blktap backend?


Stefan

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-devel] qcow disk performance not exceeding 3.0MB/s, Stefan de Konink <=