On 03.12.2010 03:00, John Lee wrote:
Hello,
I'm trying to use the function SetIOBandwidthMax within the VirtualBox
SDK 3.2.0. Somehow, I'm having a problem with making it work. I'm trying
to set a maximum bandwidth of the VM to 1Mbps to test network throughput
for the VM.
The code that I wrote is the following:
IMachine* machine1;
rc=machine1->vtbl->SetIoBandwidthMax(machine1.machine,temp);//where the
temp val is set to 1.
But when I'm getting the rc value, it comes out as not successful.
Would really help if you'd give the rc value, and preferrable the
detailed error information as well (that's why we have the
IVirtualBoxErrorInfo interface...)
Could you help me with this problem?
Thank you for your help in advance.
With the available information I can only guess that you're trying to
modify the Machine object directly. This isn't possible, you must open a
session so that the changing of settings is properly synchronized. Also
you need to save the settings before closing the session, otherwise all
changes are lost.
Besides, I don't understand how you come to the conclusion that this API
method allows you to control the network bandwidth. It only affects the
disk bandwidth...
In VirtualBox 4.0 the API design includes network bandwidth control,
however that's not implemented yet.
Klaus
Sincerely,
John Lee
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