Xen devel - Nov 2007 - How to use 1000M NIC in Xen? Does xen support that?

Hi all:
I installed xen3.0.4 on fedora7, which has an Intel Pro/1000 NIC, I use
chariot to test the throught between two machine with Intel Pro/1000 NIC,
the native throughput was 650Mbps in average, but the throughput between one
machine and the Virtual Machine on xen is 67Mbps. I noticed that in the
Virtual Machine which I installed in xen, the NIX is rtl8139, 100M, I think
this is the reason whay the throughput is 67Mbps.

Can somebody explain this??

Thank you


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I guess you''re running a VMX guest -- By default, VMX guest uses the
virtual NIC (i.e., RTL8139) that is emulated by modified Qemu.
In VMX guest, you can make and install vNIF driver to obtain a high throughput,
or you can assign your physical NIC to the VMX guest directly, if your system
supports the feature "Intel VT-d".

-- Dexuan


________________________________

From: xen-devel-bounces@lists.xensource.com
[mailto:xen-devel-bounces@lists.xensource.com] On Behalf Of jian zhang
Sent: 2007年11月15日 10:40
To: xen-users
Cc: xen-devel@lists.xensource.com
Subject: [Xen-devel] How to use 1000M NIC in Xen? Does xen support that?


Hi all:
I installed xen3.0.4 on fedora7, which has an Intel Pro/1000 NIC, I use chariot
to test the throught between two machine with Intel Pro/1000 NIC, the native
throughput was 650Mbps in average, but the throughput between one machine and
the Virtual Machine on xen is 67Mbps. I noticed that in the Virtual Machine
which I installed in xen, the NIX is rtl8139, 100M, I think this is the reason
whay the throughput is 67Mbps.
 
Can somebody explain this??
 
Thank you 

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

What is your DomU virtual machine? Windows or Linux?

If Linux, try using paravirtualization. For Windows, there''s nothing to
do
unfortunately, as open-source version of Xen does not have paravirtual
drivers for the moment. You may try Xensource XenExpress though.

Br,

Emre

On Nov 15, 2007 3:40 AM, jian zhang <cheechuang@gmail.com> wrote:
> Hi all:
> I installed xen3.0.4 on fedora7, which has an Intel Pro/1000 NIC, I use
> chariot to test the throught between two machine with Intel Pro/1000 NIC,
> the native throughput was 650Mbps in average, but the throughput between
one
> machine and the Virtual Machine on xen is 67Mbps. I noticed that in the
> Virtual Machine which I installed in xen, the NIX is rtl8139, 100M, I think
> this is the reason whay the throughput is 67Mbps.
>
> Can somebody explain this??
>
> Thank you
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>


-- 
Emre Erenoglu
erenoglu@gmail.com


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