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How to set up 1GBit NIC for "Other template" on XCP 1.5

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ms at it-infrastrukturen

Apr 14, 2012, 10:27 AM

Post #1 of 4 (280 views)
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How to set up 1GBit NIC for "Other template" on XCP 1.5

Hello,

I didn't find any information in the reference manual for xen-server 6.

When installing e.g. Ubuntu 11.10 there is RTL-8139 with "only 10/100MBit".

Thank you in advance for any hints.

regards, Mark

--
ms [at] it-infrastrukturen

http://rsync.it-infrastrukturen.org

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linux at thehobsons

Apr 14, 2012, 12:18 PM

Post #2 of 4 (270 views)
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Re: How to set up 1GBit NIC for "Other template" on XCP 1.5 [In reply to]

Mark Schneider wrote:

>When installing e.g. Ubuntu 11.10 there is RTL-8139 with "only 10/100MBit".

I assume you are talking about installing a PV guest, and this is the
only NIC that shows up ? You needn't worry as this is a virtual NIC,
there is actually nothing explicitly limiting data rates as there is
with a real NIC (where rates are determined by hardware).

The actual rate achieved will be limited by the real NICs in the
host, and the ability of the networking thread in Dom0 to shift the
bits around.

--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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ms at it-infrastrukturen

Apr 14, 2012, 12:39 PM

Post #3 of 4 (269 views)
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Re: How to set up 1GBit NIC for "Other template" on XCP 1.5 [In reply to]

Am 14.04.2012 21:18, schrieb Simon Hobson:
> Mark Schneider wrote:
>
>> When installing e.g. Ubuntu 11.10 there is RTL-8139 with "only
>> 10/100MBit".
>
> I assume you are talking about installing a PV guest, and this is the
> only NIC that shows up ? You needn't worry as this is a virtual NIC,
> there is actually nothing explicitly limiting data rates as there is
> with a real NIC (where rates are determined by hardware).
>
> The actual rate achieved will be limited by the real NICs in the host,
> and the ability of the networking thread in Dom0 to shift the bits
> around.

Thanks a lot for your hint Simon.

I use "Other template" and it is (as far I understood) HVM.

When transfering big size image from another stand alone server to the
VM (ubuntu 11.10) I have 4 to 12MBit/s only (and I saw RTL-8139 during
installation of this ubuntu-VM).

I have tested it yet also with CentOS 6.2 on the same XCP-host (I used
"Other template" for the VM too) and got network speed a bit over
30MBit/s. It would be to fast for 100MBit/s, so I am a bit confused now.

On bare metal I am getting over 70MBit/s (the host is an HP DL385g7
machine).

I use bounded interfaces however only one port is connected to the
switch at the moment.

--
ms [at] it-infrastrukturen

http://rsync.it-infrastrukturen.org

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nd at syndicat

Apr 14, 2012, 12:53 PM

Post #4 of 4 (266 views)
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Re: How to set up 1GBit NIC for "Other template" on XCP 1.5 [In reply to]

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Mark Schneider <ms [at] it-infrastrukturen> schrieb:

>I use "Other template" and it is (as far I understood) HVM.

...hmm, did not know XCP in detail (but xen) but if you are like to use Linux / Ubuntu as guest OS why did you want to use ressource wasting HVM? I hardly assume that XCP offers PV setups too as it is like a part of the xen native family (if not pls let me know this too).

Ubuntu afaik offers xen DomU support out of the box in different ways and nearly all of us did not have ressources to waste. ß)

If you use PV there is no special / further driver limit and you will get significantly more out of your half metal then it would be possible with HVM in any way - nearly the same as from native OSes on the same machine. Other limits could be from hardware setup / config then only...

best regards,

Niels.
- --
Niels Dettenbach
Syndicat IT&Internet
http://www.syndicat.com
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