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Re: [Xen-users] Intermittent network in HVM domU

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Intermittent network in HVM domU
From: Mark Dokter <dokter@xxxxxxxxxxxxx>
Date: Tue, 10 May 2011 10:18:33 +0200
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On 05/10/2011 03:17 AM, Michael South wrote:
> You checked the MAC and IP addresses, right?
> --
> Michael South
> msouth@xxxxxxxxxx <mailto:msouth@xxxxxxxxxx>

Thanks a lot for that question!
I just had the same problem: While setting up a new debian domU I was
wondering why the network was so slow just on that vm. I noticed that
there was a burst of traffic every now and then. First I thought - like
Roberto - it was a scheduling problem. But your comment caused me to
check the MAC address of that machine and it was in fact the same like
on another vm *silly me*.

> On May 6, 2011, at 12:38, Roberto Bifulco <roberto.bifulco2@xxxxxxxx
> <mailto:roberto.bifulco2@xxxxxxxx>> wrote:
>> Some more infos!
>> I run a simple ping test from my laptop to both domUs runinng on my
>> server. The ping test shows that both domU suffers intermittent
>> connectivity. More interestingly, when a domU network works, the other
>> domU's network doesn't and viceversa.
>> So it seems a "network scheduler" problem. 
>> I'm starting searching about how can I customize the behavior of the
>> IO scheduler for VNICs.
>> Roberto

Mark Dokter - System Administrator
Institute for Computergraphics and Vision - http://www.icg.tugraz.at
Graz University of Technology, Inffeldgasse 16/II, 8010 Graz, Austria
Phone: +43/316/873-5036, Fax: +43/316/873-5050

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