<div dir="ltr"><div><div><div>I am using VMs for every consumer/router/producer , the link bandwidth is 10 Gb/s, the delay is 0.4 ms. <br><br>The consumer is now connected to 3 routers where every routers has the 1G file in its content store ( I increased the cs size so it can fit 1G file). <br><br></div>For the forwarding strategy I am using something similar to this one (with slightly changes)<br><a href="https://github.com/schneiderklaus/ndnSIM/tree/master/examples/ndn-load-balancer">https://github.com/schneiderklaus/ndnSIM/tree/master/examples/ndn-load-balancer</a><br><br></div>I used the following command to run the experiments: <br></div>ndncatchunks -d iterative /ndn/foo ; where the file name is foo<br><br><div><div><div>The time I am getting for the experiments <br></div><div>retrieving from 1 router and <b>10</b> pipeline interest: 1min,7sec</div><div>retrieving from 2 routers and <b>10</b> pipeline interest: 1min,1sec</div><div>retrieving from 3 routers and <b>10</b> pipeline interest: 1min,2sec</div><div><br></div><div><div>retrieving from 1 router and <b>20</b> pipeline interest: 1min,31sec</div><div>retrieving from 2 routers and <b>20</b> pipeline interest: 1min,1sec</div><div>retrieving from 3 routers and <b>20</b> pipeline interest: 1min,5sec</div><div><br></div><div><div>retrieving from 1 router and <b>30</b> pipeline interest: 1min,7sec</div><div>retrieving from 2 routers and <b>30</b> pipeline interest: 1min,2sec</div><div>retrieving from 3 routers and <b>30</b> pipeline interest: 1min,5sec</div><div><br></div><div>if I used aimd I will get the following result:</div><div>1 router: 51 second<br></div><div>For 2 routers and 3 routers, most of the time it will timeout for some segments but I could success one time to get the value for 2 routers <br></div><div>2 routers: 1m,10 sec</div><div><br></div><div><br></div><div>Thanks,</div><div>Mohammad<br></div></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Sep 18, 2017 at 4:38 PM, Nick Briggs <span dir="ltr"><<a href="mailto:nicholas.h.briggs@gmail.com" target="_blank">nicholas.h.briggs@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">One other thing -- if the links are over TCP you probably want to know the net.inet.tcp.sendspace and .recvspace settings (or equivalent, and possibly other network configuration parameters). If you end up with a producer process being suspended/rescheduled because it has overrun the TCP output buffer space it can introduce hiccups into the performance...<br>
<span class="im HOEnZb"><br>
-- Nick<br>
<br>
> On Sep 18, 2017, at 2:22 PM, Klaus Schneider <<a href="mailto:klaus@cs.arizona.edu">klaus@cs.arizona.edu</a>> wrote:<br>
><br>
</span><div class="HOEnZb"><div class="h5">> + What's the exact simulation setup? Topology, link bandwidth, delays, etc. ?<br>
><br>
> On 09/17/2017 03:08 PM, Mohammad Alhowaidi wrote:<br>
>> Hello,<br>
>> I was trying to do a load balancing (multi-path retrieval) experiments to get a fast retrieval for a file.<br>
>> for example I have a router connected to three producers. and I used ndncatchunk to retrieve a file (1GB) and I started to increase the interest pipeline value.<br>
>> I found that when the value of interest-pipeline is 10 is the best when retrieving from one producer (not sure *WHY*? ), then I tried to use 2 producers with interest-pipeline is 20 and get a better performance (retrieving chunks was divided evenly between these two producers).<br>
>> But when I used 3 producers the performance reduced, whatever I choose the interest-pipeline value. Shouldn't retrieving the file from 3 producers with 30 interest-pipeline value be better? what could be the problem?<br>
>> Sorry for the long question!<br>
>> Thanks,<br>
>> Mohammad<br>
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