How to adjust the sending rate?

[kg12]

Could you tell me how to set the sending rate of a sender to a fixed value?Where should I change the code?
Thank you in advance.

[bobzhuyb]

What are you trying to achieve? Does traditional UDP sender work for you?

[kg12]

I want to achieve RDMA rate allocation. Traditional UDP may still be different from RDMA.

[bobzhuyb]

What do you mean by "RDMA rate allocation"....

[kg12]

I want to set a flow to a fixed sending rate.Could you tell me where to change the code ?

[bobzhuyb]

I can't really help you unless you tell me more about what you want to do.. E.g., do you want to disable DCQCN for all flows? for some flows? should the flows react to PFC? etc.

If what you want can be implemented by 1) fix initial sending rate (take a look at the UDP component used in third.cc) and 2) disable DCQCN, you may trace down how this line works
https://github.com/bobzhuyb/ns3-rdma/blob/master/windows/ns-3-dev/x64/Release/mix/config.txt#L1

[kg12]

Thank you for your patience.
I want to disable DCQCN and use the PFC as layer2.I set the ENABLE_QCN of config.txt to 0 already.But I don't know where to set a fix initial sending rate in your code.Actually, I don't know how you can get flows to send at a certain rate.

[bobzhuyb]

How about here? Rate limit from the application layer.

ns3-rdma/examples/tutorial/third.cc

Line 505 in e8a27d0

Time interPacketInterval = Seconds(0.0000005 / 2);

[kg12]

Thank you very much for your patience.