packet loss

[Shilpi Agarwal]

Hi,

  i did a small experiment to check the maximum packet handling rate.

I have two machines running click.

On one machine i have 
UDPsource and in other machine i just have

PollDevice(eth0,true)
->Counter
->Discard;

The two nodes are connected via switch.

Now i am sending 100,0000 packets at a rate of 100 thousand pps but at the sink
i never receive all packets .Counter always show around 996138.
even if i reduce the sending rate to 20 thousand pps still i am not receiving
all the packets . At 20 thousand pps i could receive only 996181 packets.

does anyone have an idea why i am loosing packets?? 

Thanks
Shilpi


 


Shilpi Agarwal
Graduate Student
Dept of Electrical Engineering
University of Wisconsin 
Madison-53706
phone:608-233-3714