These are results from a GENI-Tmix experiment run on two ProtoGENI nodes for one hour. We ran several such experiments; this is one sample.

 

The experiment consisted of 156,131 TCP connections, each connection emulating the minimum Round Trip Time (RTT) that was measured in the original production link.

Throughput in the two directions (different scales)

Description: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/tput/5s.Mbps.pngDescription: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/tput/5s.Mbps.100.png

Average throughput: 15Mbps (1to2) and 7Mbps (2to1)

 

CDF (Cumulative Distribution Function) and CCDF (Complementary CDF) - Comparing RTTs measured during the experiment vs. original RTTs

Description: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/rtt.cdf.compare.pngDescription: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/rtt.ccdf.compare.png

RTTs measured during the experiment: mean RTT = 91 ms; median RTT = 47 ms; 10% of RTTs > 169 ms; 1% of RTTs were greater than 634 ms

 

CDF (Cumulative Distribution Function) and CCDF (Complementary CDF) - Comparing Request sizes within TCP connections

Description: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/obj-sizes/req.10K.cdf.compare.pngDescription: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/obj-sizes/req.ccdf.compare.png

Request sizes measured during the experiment: mean request = 2.2KB; median request = 437 Bytes; 10% of requests were greater than 1.5KB

 

CDF (Cumulative Distribution Function) and CCDF (Complementary CDF) - Comparing Request sizes within TCP connections

Description: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/obj-sizes/resp.100KB.cdf.compare.pngDescription: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/obj-sizes/resp.ccdf.compare.png

Response sizes measured during the experiment: mean response = 10 KB; median response = 370 Bytes; 30% of responses were greater than 1.5KB; 20% of responses were greater than 4.5KB; 10% of responses were greater than 11 KB;

 

Time Series of the number of Active Connections per second during the experiment

Description: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/active_conns.png

 

CDF (Cumulative Distribution Function) and CCDF (Complementary CDF) – Duration of the TCP connections

Description: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/conn_dur.cdf.pngDescription: Description: http://cs.unc.edu/~aikat/geni/exp-results/tmix/conn_dur.ms.ccdf.png

Connection Durations measured during the experiment: mean duration = 33 sec; median duration = 290 ms; 20% of connections last greater than 2 seconds; 10% of connection durations were greater than 8.2 seconds; 2% of connection durations were greater than 4 minutes; 1% last greater than 10 minutes; note that 1% of connections is greater than 1500 connections, which would explain the number of active connections per second above.