UDP Buffer Size based on Bandwidth ?

Hi,

I am looking for a method to calculate Sending Buffer Size based on Bandwidth.

I am sending Traffic from my PC with 1GBps NIC Card to Destination. So Based on following data let me know how to calculate Sending Buffer Size.

Bandwidth = 1000 MBps
PercentageOfBandwidth = 30%

here in above case, i wanted to choose 30% of the total bandwidth and based on this config i want to calculate Send Buffer Size so that MAX throughput is achieved.

i am using WinPcap and Packet.dll.

I would be grateful for the answer.

Thanks a lot.