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Re: Using NDT in virtual machines


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  • From: Aris Adamantiadis <>
  • To: "Heather L. Sanders" <>,
  • Subject: Re: Using NDT in virtual machines
  • Date: Mon, 06 Jul 2009 13:53:01 +0200

Hello Heather,

Thank you for your detailed explanation on your experience with NDT and
VMs. I will try to use it in a VM with confidence.

Thanks,

Aris

Heather L. Sanders a écrit :
> Hello Aris,
>
> I have worked with NDT on virtual machines, as part of our effort to
> virtualize our systems.
>
> On the install itself:
>
> While this does not pertain directly to installing the NDT application
> on your given operating system, it is important to note when setting up
> the virtual machine that if you are setting up a VM that is small ( less
> than 10 GB ), that you should partition your disk with a small swap
> partition ( less than 1 GB ) and the remaining disk allocated to your
> root partition. I have learned from experience that you will run into
> disk space issues otherwise when building your custom kernel.
>
> On reporting quality:
>
> When I took over the NDT project here, I did many side by side
> comparisons between the real hardware and virtual hardware. The reports
> were virtually identical, with the exception of what NDT reported as
> what was the fastest link in the user's connection. The VM reported
> incorrectly. However, the real hardware was running an older version of
> NDT, and the differences could possibly be a version issue. I have not
> yet had time to run a test where real hardware and virtual hardware are
> running the same version of NDT.
>
> Heather Sanders
>
>
>
> Aris Adamantiadis wrote:
>> Hello,
>>
>> I see NDT as a useful tool for debugging problems with our customers. We
>> make an extensive use of virtualization technologies (especially ESX)
>> and it would be conveniant to install this new service on a virtual
>> machine.
>>
>> This leads to my question : is the NDT team aware of any recommendations
>> while installing NDT in a virtual machine ? Will the quality of the
>> reports and analyzis be impacted by the fact it's running on a VM with a
>> virtual network controller ?
>>
>> Thanks by advance,
>>
>> Aris Adamantiadis
>>
>



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