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Re: [Xen-devel] Low Network Throughput between HVM Guests

To: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [Xen-devel] Low Network Throughput between HVM Guests
From: "Mr. Teo En Ming (Zhang Enming)" <space.time.universe@xxxxxxxxx>
Date: Sat, 7 Nov 2009 19:23:48 +0800
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Hi Pasi,

I am not sure whether I can install PV drivers in Rocks HPC Cluster software 5.1 x86-64 (based on CentOS) HVM virtual machines. When I tried to install Rocks 5.1 x86-64 as a PV guest, it complains "invalid kernel" and something about the ELF kernel image. So I guess PV is out for Rocks.

To set e1000 (virtualized Intel Gigabit NIC), I have to use the model parameter in vif in HVM config? Will I get gigabit speeds instead of the Fast Ethernet 100Mb/s speed with virtual Realtek NICs?

Thank you.

Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
My Primary Blog: http://teo-en-ming-aka-zhang-enming.blogspot.com
My Secondary Blog: http://enmingteo.wordpress.com
My Youtube videos: http://www.youtube.com/user/enmingteo
Email: space.time.universe@xxxxxxxxx
Mobile Phone (Starhub Prepaid): +65-8369-2618
Street: Bedok Reservoir Road
Country: Singapore

On Sat, Nov 7, 2009 at 7:17 PM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
On Sat, Nov 07, 2009 at 01:10:56PM +0800, Mr. Teo En Ming (Zhang Enming) wrote:
>    Hi,
>    Is it possible to increase network throughput between HVM virtual
>    machines? It is very slow.

Do you have PV drivers installed in the HVM guests? if not, use e1000 NIC.

-- Pasi

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