Dear,

I have try some experiment, I used 3 computer which are:
computer A, computer B, and computer C.

All of these computers use the same network card, which are Realtek RTL8139. 
The difference in these computer is the processor.

Computer A use intel i3
computer B use intel dual core
computer C use AMD sempron

I try to use packet sending module in rtnet examples, and I try them send 1 
65000bytes packet/1 second using rtnet among themself.. but, I get this 
conclusion:
while using standard ethernet, while I send packet, it has no much difference. 
but, using the same amount of packet size/second, while I use rtnet to send the 
packet, the differences can be seen while I capture the packets with tcpdump

the computer A and B which has the highest specification of processor can send 
packet closer to 1 second per packet (like I tell the program to do), which are 
1.000005 second, while the computer C send packet with difference 0.005000 
second.

I assume that it is because of the multicore that computer A and B have, which 
use intel core i3 and dualcore (both have 2 cores). But is there any other 
reason?



      
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