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<div>Lan,</div>
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Sure, I can do that.
<div>What is it you are looking for, a characterization of the full Testbed or just this link?</div>
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<div>John</div>
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<div>On Feb 14, 2015, at 3:28 PM, Lan Wang (lanwang) <<a href="mailto:lanwang@memphis.edu">lanwang@memphis.edu</a>> wrote:</div>
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Sent from my iPhone</div>
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On Feb 13, 2015, at 11:28 PM, Lixia Zhang <<a href="mailto:lixia@cs.ucla.edu">lixia@cs.ucla.edu</a>> wrote:<br>
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<div class="">On Feb 13, 2015, at 2:24 PM, Lan Wang (lanwang) <<a href="mailto:lanwang@memphis.edu" class="">lanwang@memphis.edu</a>> wrote:</div>
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FYI, some information about the overlay link loss rate (measured with ping) over the testbed.  Loss rate is pretty low, e.g., 10 losses out of 100000 between UCLA and PKU at 100 pings per second (see below).<br class="">
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Lan</div>
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just curious: wonder if we know what may happen if we increase the rate to 500 pings/sec?</div>
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I am cc'ing John to see if he can do this on the testbed.
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<div>Lan<br>
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<div class="">Begin forwarded message:</div>
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<span style="font-family: Helvetica; font-size: inherit;" class=""><b class="">From:
</b></span><span style="font-family: Helvetica; font-size: inherit;" class="">John DeHart <<a href="mailto:jdd@seas.wustl.edu" class="">jdd@seas.wustl.edu</a>><br class="">
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<span style="font-family: Helvetica; font-size: inherit;" class=""><b class="">Subject:
</b></span><span style="font-family: Helvetica; font-size: inherit;" class=""><b class="">Re: Loss Rate</b><br class="">
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<span style="font-family: Helvetica; font-size: inherit;" class=""><b class="">Date:
</b></span><span style="font-family: Helvetica; font-size: inherit;" class="">August 19, 2014 3:30:23 PM CDT<br class="">
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<span style="font-family: Helvetica; font-size: inherit;" class=""><b class="">To:
</b></span><span style="font-family: Helvetica; font-size: inherit;" class="">"Lan Wang (lanwang)" <<a href="mailto:lanwang@memphis.edu" class="">lanwang@memphis.edu</a>>, "<a href="mailto:marcsb@bellsouth.net" class="">marcsb@bellsouth.net</a>" <<a href="mailto:marcsb@bellsouth.net" class="">marcsb@bellsouth.net</a>><br class="">
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<span style="font-family: Helvetica; font-size: inherit;" class=""><b class="">Cc:
</b></span><span style="font-family: Helvetica; font-size: inherit;" class="">"<a href="mailto:obaidasyed@gmail.com" class="">obaidasyed@gmail.com</a>" <<a href="mailto:obaidasyed@gmail.com" class="">obaidasyed@gmail.com</a>><br class="">
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100,000 ping requests:<br class="">
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UCLA (spurs) to PKU (loss of 10 packets)<br class="">
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ndnops@spurs:~$ sudo ping -q -i 0.01 -c 100000 162.105.146.26<br class="">
PING 162.105.146.26 (162.105.146.26) 56(84) bytes of data.<br class="">
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--- 162.105.146.26 ping statistics ---<br class="">
100000 packets transmitted, 99990 received, 0% packet loss, time 1112399ms<br class="">
rtt min/avg/max/mdev = 148.080/155.447/970.675/43.102 ms, pipe 96<br class="">
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TONGJI to CAIDA (loss of 8 packets):<br class="">
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ndnops@ndnops:~$ sudo ping -q -i 0.01 -c 100000 <a href="http://click.caida.org/" class="">
click.caida.org</a><br class="">
PING <a href="http://click.caida.org/" class="">click.caida.org</a> (192.172.226.248) 56(84) bytes of data.<br class="">
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--- <a href="http://click.caida.org/" class="">click.caida.org</a> ping statistics ---<br class="">
100000 packets transmitted, 99992 received, 0% packet loss, time 1371267ms<br class="">
rtt min/avg/max/mdev = 181.647/202.676/251.866/12.110 ms, pipe 19<br class="">
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<div class="moz-cite-prefix">On 8/19/14, 2:37 PM, John DeHart wrote:<br class="">
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And here is a similar pair of results for 10000 pings trying at 100 requests per second.<br class="">
Let me know if this level of result helps at all.<br class="">
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UCLA (spurs) to PKU:<br class="">
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ndnops@spurs:~$ sudo ping -q -i 0.01 -c 10000 162.105.146.26<br class="">
PING 162.105.146.26 (162.105.146.26) 56(84) bytes of data.<br class="">
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--- 162.105.146.26 ping statistics ---<br class="">
10000 packets transmitted, 10000 received, 0% packet loss, time 109146ms<br class="">
rtt min/avg/max/mdev = 148.050/154.401/631.033/39.391 ms, pipe 63<br class="">
ndnops@spurs:~$<br class="">
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TONGJI to CAIDA (1 loss out of 10000)<br class="">
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ndnops@ndnops:~$ sudo ping -q -i 0.01 -c 10000 <a href="http://click.caida.org/" class="">
click.caida.org</a><br class="">
PING <a href="http://click.caida.org/" class="">click.caida.org</a> (192.172.226.248) 56(84) bytes of data.<br class="">
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--- <a href="http://click.caida.org/" class="">click.caida.org</a> ping statistics ---<br class="">
10000 packets transmitted, 9999 received, 0% packet loss, time 136946ms<br class="">
rtt min/avg/max/mdev = 181.710/193.677/210.785/5.104 ms, pipe 17<br class="">
ndnops@ndnops:~$<br class="">
<div class="moz-cite-prefix">On 8/19/14, 2:22 PM, John DeHart wrote:<br class="">
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Here are two initial tests doing 1000 ping requests,<br class="">
using approximately 10 ping requests per second.<br class="">
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UCLA (spurs) to PKU:<br class="">
ndnops@spurs:~$ sudo ping -q -i 0.1 -c 1000 162.105.146.26<br class="">
PING 162.105.146.26 (162.105.146.26) 56(84) bytes of data.<br class="">
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--- 162.105.146.26 ping statistics ---<br class="">
1000 packets transmitted, 1000 received, 0% packet loss, time 100958ms<br class="">
rtt min/avg/max/mdev = 148.277/166.666/597.244/67.553 ms, pipe 6<br class="">
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TONGJI to CAIDA:<br class="">
ndnops@ndnops:~$ sudo ping -q -i 0.1 -c 1000 <a href="http://click.caida.org/" class="">
click.caida.org</a><br class="">
PING <a href="http://click.caida.org/" class="">click.caida.org</a> (192.172.226.248) 56(84) bytes of data.<br class="">
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--- <a href="http://click.caida.org/" class="">click.caida.org</a> ping statistics ---<br class="">
1000 packets transmitted, 1000 received, 0% packet loss, time 106763ms<br class="">
rtt min/avg/max/mdev = 181.729/224.260/270.358/19.935 ms, pipe 3<br class="">
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