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

[zvoice@xxxxxxx]

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
>
>
> _______________________________________________
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> 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



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