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-users

Re: [Xen-users] Bad network performance between VMs in a domain.

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Bad network performance between VMs in a domain.
From: zvoice@xxxxxxx
Date: Sat, 21 Apr 2007 03:10:08 +0400
Delivery-date: Fri, 20 Apr 2007 16:09:38 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxx
In-reply-to: <HMqKT3cNb0Xh.kY4FVCRx@xxxxxxxxxxxxxxx>
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
References: <HMqKT3cNb0Xh.kY4FVCRx@xxxxxxxxxxxxxxx>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
User-agent: KMail/1.9.6
i have solved my problem using ethtool by switching crc sum on the interfaces 
off. So i have got the question. Why do we have such types of mistakes?
I 'll try to recompile my kernel in order to count crc_failed packets.
If you know patches, that can improve Xen performance - please, mention them 
here.

On Wednesday 18 April 2007 15:13:16 zvoice@xxxxxxx wrote:
> In my next message i ll give you to your questions, but i think the problem
> is when the packet comes from vif to bridge and then from bridge to another
> vif. But what is strange, that packets that pass through the vif to eth0 it
> goes with the maximum speed, but when this packet is to be transmitted from
> 1 vif to another in one vif it happens slowly. исходное сообщение
> Тема: RE: [Xen-users] Bad network performance between VMs in a domain.
> От:   zvoice@xxxxxxx
> Дата:         18.04.2007 10.01
>
> I have got xen 3.0.3 and guests are in PVM
>
> исходное сообщение
> Тема: [Xen-users] Bad network performance between VMs in a domain.
> От:   zvoice@xxxxxxx
> Дата:         18.04.2007 08.24
>
> Hi!
> I have got this problem aching in my head. The speed between my VM and
> external machine is about 900Mb/s, but the speed between 2 VMs in one
> bridge is just about 20 Mb/s. What can i do with this? Please, help me out.
> I ve got a standart Xen configuration(bridge).
> Thanks.
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users


On Wednesday 18 April 2007 15:13:16 zvoice@xxxxxxx wrote:
> In my next message i ll give you to your questions, but i think the problem
> is when the packet comes from vif to bridge and then from bridge to another
> vif. But what is strange, that packets that pass through the vif to eth0 it
> goes with the maximum speed, but when this packet is to be transmitted from
> 1 vif to another in one vif it happens slowly. исходное сообщение
> Тема: RE: [Xen-users] Bad network performance between VMs in a domain.
> От:   zvoice@xxxxxxx
> Дата:         18.04.2007 10.01
>
> I have got xen 3.0.3 and guests are in PVM
>
> исходное сообщение
> Тема: [Xen-users] Bad network performance between VMs in a domain.
> От:   zvoice@xxxxxxx
> Дата:         18.04.2007 08.24
>
> Hi!
> I have got this problem aching in my head. The speed between my VM and
> external machine is about 900Mb/s, but the speed between 2 VMs in one
> bridge is just about 20 Mb/s. What can i do with this? Please, help me out.
> I ve got a standart Xen configuration(bridge).
> Thanks.
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users



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