TCP Friendliness

Experimental Setting

Bottleneck Bandwidth: 400Mbs
Queue size: 2Mbytes
Background traffic: YES
Long-Lived flows: forward direction (iperf 12flows), backward direction (iperf 2flows)
Short-Lived flows: web traffic 38M (mean) using SURGE (forward direction, backward direction)
flow1 and flow2 have the same RTT

1. TCP Fairness

1.1 Fairness index (Jain's) for TCP friendliness

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	0.911759 [1] [2] [3] [4] [5]	0.612410 [1] [2] [3] [4] [5]	0.980461 [1] [2]	0.686564 [1] [2] [3] [4] [5]	0.572317 [1] [2] [3] [4] [5]	0.747227 [1] [2] [3] [4] [5]	0.995244 [1] [2] [3] [4] [5]
42ms	0.824193 [1] [2] [3] [4] [5]	0.606284 [1] [2] [3] [4] [5]	0.878380 [1] [2]	0.691023 [1] [2] [3] [4] [5]	0.557031 [1] [2] [3] [4] [5]	0.787319 [1] [2] [3] [4] [5]	0.995166 [1] [2] [3] [4] [5]
82ms	0.719891 [1] [2] [3] [4] [5]	0.596470 [1] [2] [3] [4] [5]	0.731804 [1] [2]	0.670783 [1] [2] [3] [4] [5]	0.543053 [1] [2] [3] [4] [5]	0.670745 [1] [2] [3] [4] [5]	0.987745 [1] [2] [3] [4] [5]
162ms	0.668150 [1] [2] [3] [4] [5]	0.599033 [1] [2] [3] [4] [5]	0.589576 [1] [2]	0.654475 [1] [2] [3] [4] [5]	0.531991 [1] [2] [3] [4] [5]	0.704603 [1] [2] [3] [4] [5]	0.993406 [1] [2] [3] [4] [5]
324ms	0.625306 [1] [2] [3] [4] [5]	0.608252 [1] [2] [3] [4] [5]	0.616710 [1] [2]	0.663367 [1] [2] [3] [4] [5]	0.545989 [1] [2] [3] [4] [5]	0.820598 [1] [2] [3] [4] [5]	0.973285 [1] [2] [3] [4] [5]

1.2 Throughput Ratio for TCP friendliness

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	0.550830 [1] [2] [3] [4] [5]	0.113878 [1] [2] [3] [4] [5]	0.753505 [1] [2]	0.195540 [1] [2] [3] [4] [5]	0.072713 [1] [2] [3] [4] [5]	0.402938 [1] [2] [3] [4] [5]	0.879700 [1] [2] [3] [4] [5]
42ms	0.373381 [1] [2] [3] [4] [5]	0.107530 [1] [2] [3] [4] [5]	0.457631 [1] [2]	0.198644 [1] [2] [3] [4] [5]	0.057221 [1] [2] [3] [4] [5]	0.385661 [1] [2] [3] [4] [5]	0.882875 [1] [2] [3] [4] [5]
82ms	0.236794 [1] [2] [3] [4] [5]	0.097406 [1] [2] [3] [4] [5]	0.245836 [1] [2]	0.176212 [1] [2] [3] [4] [5]	0.043134 [1] [2] [3] [4] [5]	0.182805 [1] [2] [3] [4] [5]	0.833978 [1] [2] [3] [4] [5]
162ms	0.173623 [1] [2] [3] [4] [5]	0.100043 [1] [2] [3] [4] [5]	0.090322 [1] [2]	0.158818 [1] [2] [3] [4] [5]	0.032025 [1] [2] [3] [4] [5]	0.236770 [1] [2] [3] [4] [5]	0.881780 [1] [2] [3] [4] [5]
324ms	0.127598 [1] [2] [3] [4] [5]	0.109583 [1] [2] [3] [4] [5]	0.118743 [1] [2]	0.168420 [1] [2] [3] [4] [5]	0.046131 [1] [2] [3] [4] [5]	0.546177 [1] [2] [3] [4] [5]	0.769755 [1] [2] [3] [4] [5]

2. Link Utilization

Link utilization table

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	0.954724 [1] [2] [3] [4] [5]	0.955062 [1] [2] [3] [4] [5]	0.954695 [1] [2]	0.954638 [1] [2] [3] [4] [5]	0.955692 [1] [2] [3] [4] [5]	0.954775 [1] [2] [3] [4] [5]	0.954384 [1] [2] [3] [4] [5]
42ms	0.954363 [1] [2] [3] [4] [5]	0.954614 [1] [2] [3] [4] [5]	0.946617 [1] [2]	0.953798 [1] [2] [3] [4] [5]	0.951749 [1] [2] [3] [4] [5]	0.953485 [1] [2] [3] [4] [5]	0.950580 [1] [2] [3] [4] [5]
82ms	0.949533 [1] [2] [3] [4] [5]	0.954536 [1] [2] [3] [4] [5]	0.948404 [1] [2]	0.950888 [1] [2] [3] [4] [5]	0.941735 [1] [2] [3] [4] [5]	0.944331 [1] [2] [3] [4] [5]	0.948389 [1] [2] [3] [4] [5]
162ms	0.952747 [1] [2] [3] [4] [5]	0.951489 [1] [2] [3] [4] [5]	0.935781 [1] [2]	0.946471 [1] [2] [3] [4] [5]	0.883541 [1] [2] [3] [4] [5]	0.909352 [1] [2] [3] [4] [5]	0.943292 [1] [2] [3] [4] [5]
324ms	0.946287 [1] [2] [3] [4] [5]	0.942458 [1] [2] [3] [4] [5]	0.945583 [1] [2]	0.932636 [1] [2] [3] [4] [5]	0.817134 [1] [2] [3] [4] [5]	0.884018 [1] [2] [3] [4] [5]	0.935321 [1] [2] [3] [4] [5]

3. Queue Dropping Ratio

Queue drop ratio on the bottleneck router

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	0.000255 [1] [2] [3] [4] [5]	0.000719 [1] [2] [3] [4] [5]	0.000268 [1] [2]	0.000367 [1] [2] [3] [4] [5]	0.001321 [1] [2] [3] [4] [5]	0.000714 [1] [2] [3] [4] [5]	0.000252 [1] [2] [3] [4] [5]
42ms	0.000271 [1] [2] [3] [4] [5]	0.000467 [1] [2] [3] [4] [5]	0.000260 [1] [2]	0.000333 [1] [2] [3] [4] [5]	0.001018 [1] [2] [3] [4] [5]	0.000532 [1] [2] [3] [4] [5]	0.000250 [1] [2] [3] [4] [5]
82ms	0.000278 [1] [2] [3] [4] [5]	0.000379 [1] [2] [3] [4] [5]	0.000314 [1] [2]	0.000288 [1] [2] [3] [4] [5]	0.000784 [1] [2] [3] [4] [5]	0.000440 [1] [2] [3] [4] [5]	0.000236 [1] [2] [3] [4] [5]
162ms	0.000241 [1] [2] [3] [4] [5]	0.000254 [1] [2] [3] [4] [5]	0.000293 [1] [2]	0.000228 [1] [2] [3] [4] [5]	0.000937 [1] [2] [3] [4] [5]	0.000526 [1] [2] [3] [4] [5]	0.000183 [1] [2] [3] [4] [5]
324ms	0.000196 [1] [2] [3] [4] [5]	0.000236 [1] [2] [3] [4] [5]	0.000239 [1] [2]	0.000191 [1] [2] [3] [4] [5]	0.000780 [1] [2] [3] [4] [5]	0.000371 [1] [2] [3] [4] [5]	0.000197 [1] [2] [3] [4] [5]

4. Convergence Time

4.1 Convergence time for two flows

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	315.600000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	100.000000 [1] [2]	1068.000000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	446.200000 [1] [2] [3] [4] [5]	31.000000 [1] [2] [3] [4] [5]
42ms	295.400000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	110.000000 [1] [2]	1068.000000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	570.200000 [1] [2] [3] [4] [5]	51.000000 [1] [2] [3] [4] [5]
82ms	1068.000000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	1068.000000 [1] [2]	1068.000000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	718.200000 [1] [2] [3] [4] [5]	45.000000 [1] [2] [3] [4] [5]
162ms	857.400000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	1067.500000 [1] [2]	1068.000000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	540.200000 [1] [2] [3] [4] [5]	139.000000 [1] [2] [3] [4] [5]
324ms	861.400000 [1] [2] [3] [4] [5]	646.800000 [1] [2] [3] [4] [5]	541.500000 [1] [2]	648.800000 [1] [2] [3] [4] [5]	929.400000 [1] [2] [3] [4] [5]	347.600000 [1] [2] [3] [4] [5]	335.000000 [1] [2] [3] [4] [5]

4.2 Fairness index over various time scales

RTT 82 msec with various time scales

Fairness index table

You can click the link of each delay ( 16ms 42ms 82ms 162ms 324ms ) as well as each measurement interval

Protocol		16ms	42ms	82ms	162ms	324ms
CUBIC	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.897190	0.818591	0.722379	0.672561	0.632015
	10sec	0.898777	0.819009	0.722456	0.672581	0.632072
	20sec	0.901119	0.819842	0.722541	0.671975	0.632622
	40sec	0.904850	0.821785	0.723414	0.672135	0.633707
	80sec	0.907380	0.822613	0.723537	0.671805	0.633011
	160sec	0.908804	0.823321	0.724118	0.672088	0.631381
BIC	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.613502	0.607785	0.598033	0.602651	0.614733
	10sec	0.613275	0.607604	0.597892	0.602544	0.614804
	20sec	0.613003	0.607294	0.597741	0.602374	0.614813
	40sec	0.612412	0.606944	0.597538	0.602498	0.614660
	80sec	0.612181	0.606768	0.597196	0.601455	0.613992
	160sec	0.611805	0.605619	0.596708	0.603327	0.609480
HTCP	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.954157	0.867916	0.733148	0.593600	0.623760
	10sec	0.957569	0.869073	0.732760	0.593276	0.623305
	20sec	0.962786	0.870684	0.732572	0.592634	0.622417
	40sec	0.968676	0.871502	0.732069	0.592861	0.622145
	80sec	0.972542	0.872567	0.732368	0.592011	0.621123
	160sec	0.973862	0.873486	0.734947	0.590774	0.624579
HSTCP	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.687539	0.692524	0.672457	0.657819	0.671522
	10sec	0.687402	0.692450	0.672288	0.657577	0.671479
	20sec	0.687117	0.692246	0.671942	0.657367	0.671298
	40sec	0.687598	0.692540	0.671016	0.657467	0.672111
	80sec	0.687439	0.692314	0.670513	0.657158	0.672659
	160sec	0.688182	0.692539	0.669797	0.657745	0.676919
STCP	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.572902	0.557848	0.543800	0.534652	0.563918
	10sec	0.572728	0.557707	0.543721	0.534135	0.558991
	20sec	0.572580	0.557523	0.543591	0.533883	0.556055
	40sec	0.572716	0.557449	0.543433	0.533673	0.553653
	80sec	0.572656	0.557303	0.543302	0.532977	0.549963
	160sec	0.572507	0.557887	0.543275	0.532819	0.549799
FAST	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.740213	0.777479	0.663689	0.699702	0.809914
	10sec	0.741964	0.778700	0.665332	0.699781	0.807381
	20sec	0.743601	0.780298	0.669092	0.700112	0.807786
	40sec	0.744962	0.781748	0.673947	0.701333	0.808885
	80sec	0.746070	0.782872	0.675233	0.702678	0.808657
	160sec	0.746743	0.783734	0.668906	0.699515	0.811049
SACK	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.967344	0.965067	0.950528	0.954099	0.935722
	10sec	0.970391	0.967261	0.952196	0.954888	0.936013
	20sec	0.974272	0.971042	0.955289	0.956413	0.937036
	40sec	0.980114	0.976237	0.960620	0.959360	0.937613
	80sec	0.984921	0.984010	0.966350	0.966604	0.940932
	160sec	0.992698	0.992581	0.970491	0.972612	0.940035

5. Coefficient of Variance (CoV) of Total throughput

CoV Graph for 10 sec measurement interval

CoV table

You can click the link of each delay ( 16ms 42ms 82ms 162ms 324ms ) as well as each measurement interval

Protocol		16ms	42ms	82ms	162ms	324ms
CUBIC	1sec	0.004307	0.007437	0.021671	0.012604	0.029090
	5sec	0.001262	0.003657	0.016990	0.008607	0.024443
	10sec	0.000652	0.002498	0.014716	0.006812	0.021589
	20sec	0.000336	0.001583	0.012150	0.005128	0.016291
	40sec	0.000178	0.001093	0.005581	0.003579	0.012413
	80sec	0.000103	0.000705	0.004175	0.002262	0.008894
	160sec	0.000057	0.000463	0.002717	0.001796	0.005156
BIC	1sec	0.004804	0.010527	0.009565	0.016250	0.033606
	5sec	0.001564	0.004324	0.004000	0.010941	0.028709
	10sec	0.000980	0.003061	0.002579	0.008408	0.024988
	20sec	0.000633	0.002133	0.001710	0.006212	0.019870
	40sec	0.000444	0.001528	0.001146	0.004365	0.014326
	80sec	0.000288	0.001036	0.000795	0.003111	0.010634
	160sec	0.000217	0.000686	0.000536	0.001574	0.008420
HTCP	1sec	0.005662	0.031237	0.023551	0.040022	0.025237
	5sec	0.001886	0.025185	0.017951	0.035045	0.020199
	10sec	0.000878	0.019610	0.013461	0.029148	0.016969
	20sec	0.000535	0.013660	0.009124	0.022315	0.012656
	40sec	0.000250	0.008828	0.007023	0.016855	0.009628
	80sec	0.000128	0.006407	0.004907	0.013425	0.005871
	160sec	0.000084	0.003937	0.003431	0.009000	0.004229
HSTCP	1sec	0.007405	0.011941	0.023382	0.027207	0.038659
	5sec	0.002437	0.005696	0.017796	0.022095	0.034489
	10sec	0.001522	0.003755	0.013625	0.017682	0.029742
	20sec	0.000892	0.002791	0.009800	0.012676	0.023815
	40sec	0.000619	0.001910	0.007637	0.008980	0.016698
	80sec	0.000433	0.001245	0.005191	0.006137	0.013067
	160sec	0.000277	0.000756	0.003597	0.004284	0.006730
STCP	1sec	0.008234	0.019551	0.033256	0.142018	0.213416
	5sec	0.002315	0.008493	0.016506	0.097900	0.196191
	10sec	0.001465	0.006187	0.011981	0.073950	0.175028
	20sec	0.000909	0.004364	0.008626	0.055073	0.142261
	40sec	0.000588	0.003035	0.006236	0.039483	0.100810
	80sec	0.000394	0.002152	0.004122	0.027281	0.074926
	160sec	0.000252	0.001337	0.002737	0.016276	0.050585
FAST	1sec	0.007329	0.009586	0.033979	0.089321	0.118042
	5sec	0.003095	0.003811	0.024015	0.069848	0.107987
	10sec	0.002047	0.002528	0.019282	0.055945	0.098655
	20sec	0.001492	0.001733	0.015235	0.043890	0.081715
	40sec	0.001131	0.001233	0.011248	0.027235	0.065920
	80sec	0.000726	0.000899	0.007212	0.020613	0.048388
	160sec	0.000512	0.000586	0.005015	0.012623	0.034190
SACK	1sec	0.008108	0.019222	0.023518	0.033026	0.039254
	5sec	0.004353	0.014792	0.020143	0.029770	0.035654
	10sec	0.003000	0.012556	0.017086	0.026079	0.032731
	20sec	0.001228	0.009723	0.013328	0.020614	0.028549
	40sec	0.000856	0.006439	0.009745	0.015052	0.023088
	80sec	0.000674	0.004411	0.007404	0.009322	0.014813
	160sec	0.000481	0.003029	0.004373	0.006695	0.012087