RTT Fairness

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 has fixed RTT
flow2 has been varied

1. RTT Fairness

1.1 Fairness index (Jain's) for RTT fairness

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	0.950441 [1] [2] [3] [4] [5]	0.634905 [1] [2] [3] [4] [5]	0.996818 [1]	0.715354 [1] [2] [3] [4] [5]	0.569685 [1] [2] [3] [4] [5]	0.620451 [1] [2] [3] [4] [5]	0.691605 [1] [2] [3] [4] [5]
22ms	0.940462 [1] [2] [3] [4] [5]	0.654648 [1] [2] [3] [4] [5]	0.995190 [1]	0.698938 [1] [2] [3] [4] [5]	0.585505 [1] [2] [3] [4] [5]	0.536530 [1] [2] [3] [4] [5]	0.699140 [1] [2] [3] [4] [5]
42ms	0.970350 [1] [2] [3] [4] [5]	0.726012 [1] [2] [3] [4] [5]	0.985105 [1]	0.825719 [1] [2] [3] [4] [5]	0.643293 [1] [2] [3] [4] [5]	0.598261 [1] [2] [3] [4] [5]	0.770952 [1] [2] [3] [4] [5]
82ms	0.980189 [1] [2] [3] [4] [5]	0.829613 [1] [2] [3] [4] [5]	0.997781 [1]	0.894319 [1] [2] [3] [4] [5]	0.725900 [1] [2] [3] [4] [5]	0.685897 [1] [2] [3] [4] [5]	0.877404 [1] [2] [3] [4] [5]
162ms	0.980712 [1] [2] [3] [4] [5]	0.996081 [1] [2] [3] [4] [5]	0.999899 [1]	0.992723 [1] [2] [3] [4] [5]	0.992865 [1] [2] [3] [4] [5]	0.736335 [1] [2] [3] [4] [5]	0.989773 [1] [2] [3] [4] [5]

1.2 Throughput Ratio for RTT fairness

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	0.689894 [1] [2] [3] [4] [5]	0.137504 [1] [2] [3] [4] [5]	0.893045 [1]	0.226844 [1] [2] [3] [4] [5]	0.070031 [1] [2] [3] [4] [5]	0.184358 [1] [2] [3] [4] [5]	0.199485 [1] [2] [3] [4] [5]
22ms	0.680414 [1] [2] [3] [4] [5]	0.158562 [1] [2] [3] [4] [5]	0.869997 [1]	0.211306 [1] [2] [3] [4] [5]	0.086154 [1] [2] [3] [4] [5]	0.036637 [1] [2] [3] [4] [5]	0.208585 [1] [2] [3] [4] [5]
42ms	0.764912 [1] [2] [3] [4] [5]	0.239105 [1] [2] [3] [4] [5]	0.781003 [1]	0.371974 [1] [2] [3] [4] [5]	0.146406 [1] [2] [3] [4] [5]	0.108206 [1] [2] [3] [4] [5]	0.297469 [1] [2] [3] [4] [5]
82ms	0.757309 [1] [2] [3] [4] [5]	0.377973 [1] [2] [3] [4] [5]	0.909933 [1]	0.493767 [1] [2] [3] [4] [5]	0.238995 [1] [2] [3] [4] [5]	0.205443 [1] [2] [3] [4] [5]	0.458611 [1] [2] [3] [4] [5]
162ms	0.830577 [1] [2] [3] [4] [5]	0.896592 [1] [2] [3] [4] [5]	0.980067 [1]	0.845974 [1] [2] [3] [4] [5]	0.846449 [1] [2] [3] [4] [5]	0.395880 [1] [2] [3] [4] [5]	0.840493 [1] [2] [3] [4] [5]

2. Link Utilization

Link utilization table

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16	0.954684 [1] [2] [3] [4] [5]	0.955147 [1] [2] [3] [4] [5]	0.954131 [1]	0.954798 [1] [2] [3] [4] [5]	0.955856 [1] [2] [3] [4] [5]	0.954951 [1] [2] [3] [4] [5]	0.953963 [1] [2] [3] [4] [5]
22	0.954707 [1] [2] [3] [4] [5]	0.954986 [1] [2] [3] [4] [5]	0.952846 [1]	0.952685 [1] [2] [3] [4] [5]	0.955570 [1] [2] [3] [4] [5]	0.954998 [1] [2] [3] [4] [5]	0.952875 [1] [2] [3] [4] [5]
42	0.954611 [1] [2] [3] [4] [5]	0.954740 [1] [2] [3] [4] [5]	0.927332 [1]	0.954397 [1] [2] [3] [4] [5]	0.952456 [1] [2] [3] [4] [5]	0.952131 [1] [2] [3] [4] [5]	0.942657 [1] [2] [3] [4] [5]
82	0.954003 [1] [2] [3] [4] [5]	0.954221 [1] [2] [3] [4] [5]	0.939938 [1]	0.951703 [1] [2] [3] [4] [5]	0.942627 [1] [2] [3] [4] [5]	0.949047 [1] [2] [3] [4] [5]	0.928284 [1] [2] [3] [4] [5]
162	0.952622 [1] [2] [3] [4] [5]	0.952762 [1] [2] [3] [4] [5]	0.928626 [1]	0.942936 [1] [2] [3] [4] [5]	0.933470 [1] [2] [3] [4] [5]	0.931330 [1] [2] [3] [4] [5]	0.912242 [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	0.000210 [1] [2] [3] [4] [5]	0.000687 [1] [2] [3] [4] [5]	0.000292 [1]	0.000375 [1] [2] [3] [4] [5]	0.001696 [1] [2] [3] [4] [5]	0.000729 [1] [2] [3] [4] [5]	0.000209 [1] [2] [3] [4] [5]
22ms	0.000248 [1] [2] [3] [4] [5]	0.000633 [1] [2] [3] [4] [5]	0.000277 [1]	0.000359 [1] [2] [3] [4] [5]	0.001550 [1] [2] [3] [4] [5]	0.000655 [1] [2] [3] [4] [5]	0.000202 [1] [2] [3] [4] [5]
42ms	0.000267 [1] [2] [3] [4] [5]	0.000485 [1] [2] [3] [4] [5]	0.000269 [1]	0.000321 [1] [2] [3] [4] [5]	0.001147 [1] [2] [3] [4] [5]	0.000512 [1] [2] [3] [4] [5]	0.000228 [1] [2] [3] [4] [5]
82ms	0.000237 [1] [2] [3] [4] [5]	0.000363 [1] [2] [3] [4] [5]	0.000312 [1]	0.000249 [1] [2] [3] [4] [5]	0.001006 [1] [2] [3] [4] [5]	0.000406 [1] [2] [3] [4] [5]	0.000201 [1] [2] [3] [4] [5]
162ms	0.000257 [1] [2] [3] [4] [5]	0.000298 [1] [2] [3] [4] [5]	0.000349 [1]	0.000263 [1] [2] [3] [4] [5]	0.000782 [1] [2] [3] [4] [5]	0.000463 [1] [2] [3] [4] [5]	0.000216 [1] [2] [3] [4] [5]

4. Convergence Time

4.1 Convergence time for two flows

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	243.600000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	35.000000 [1]	1068.000000 [1] [2] [3] [4] [5]	1067.800000 [1] [2] [3] [4] [5]	861.400000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]
22ms	327.600000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	35.000000 [1]	1067.800000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	1067.800000 [1] [2] [3] [4] [5]	861.400000 [1] [2] [3] [4] [5]
42ms	45.000000 [1] [2] [3] [4] [5]	646.800000 [1] [2] [3] [4] [5]	15.000000 [1]	859.400000 [1] [2] [3] [4] [5]	857.400000 [1] [2] [3] [4] [5]	899.200000 [1] [2] [3] [4] [5]	884.800000 [1] [2] [3] [4] [5]
82ms	93.000000 [1] [2] [3] [4] [5]	225.600000 [1] [2] [3] [4] [5]	45.000000 [1]	735.600000 [1] [2] [3] [4] [5]	650.800000 [1] [2] [3] [4] [5]	480.200000 [1] [2] [3] [4] [5]	327.000000 [1] [2] [3] [4] [5]
162ms	107.000000 [1] [2] [3] [4] [5]	53.000000 [1] [2] [3] [4] [5]	65.000000 [1]	91.000000 [1] [2] [3] [4] [5]	167.000000 [1] [2] [3] [4] [5]	658.800000 [1] [2] [3] [4] [5]	145.000000 [1] [2] [3] [4] [5]

4.2 Fairness index over various time scales

RTT 42 msec with various time scales

Fairness index table

You can click the link of each delay ( 16ms 22ms 42ms 82ms 162ms ) as well as each measurement interval

Protocol		16ms	22ms	42ms	82ms	162ms
CUBIC	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.938394	0.928461	0.954850	0.964655	0.961955
	10sec	0.938895	0.928932	0.955357	0.965095	0.962417
	20sec	0.939956	0.929782	0.956515	0.965981	0.963335
	40sec	0.942530	0.931416	0.958561	0.967848	0.964926
	80sec	0.945219	0.934027	0.962813	0.971787	0.969248
	160sec	0.948843	0.933904	0.964485	0.976762	0.972755
BIC	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.636467	0.656204	0.726829	0.825563	0.978419
	10sec	0.636315	0.656094	0.726861	0.825863	0.978999
	20sec	0.636043	0.655861	0.726876	0.826460	0.980408
	40sec	0.634959	0.655950	0.727734	0.827795	0.983093
	80sec	0.634511	0.655605	0.727731	0.828841	0.987054
	160sec	0.633920	0.654901	0.730847	0.831334	0.991963
HTCP	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.978024	0.970854	0.954465	0.980890	0.981798
	10sec	0.981700	0.975293	0.959496	0.983103	0.983679
	20sec	0.984528	0.980415	0.965585	0.986635	0.986582
	40sec	0.988198	0.985774	0.978617	0.987963	0.991705
	80sec	0.990453	0.987901	0.981680	0.990866	0.994176
	160sec	0.991526	0.989163	0.986600	0.991485	0.997053
HSTCP	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.716348	0.699838	0.824002	0.888376	0.971344
	10sec	0.716199	0.699740	0.824219	0.888837	0.972380
	20sec	0.716092	0.699626	0.824555	0.889477	0.974121
	40sec	0.715491	0.700043	0.824939	0.890062	0.976372
	80sec	0.715359	0.699789	0.825371	0.891215	0.979594
	160sec	0.716218	0.701182	0.825409	0.890874	0.983205
STCP	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.570068	0.585940	0.643926	0.724274	0.953671
	10sec	0.570031	0.585892	0.643904	0.724297	0.954662
	20sec	0.569979	0.585834	0.643878	0.724373	0.956860
	40sec	0.569810	0.585716	0.643547	0.724670	0.959968
	80sec	0.569744	0.585647	0.643382	0.725378	0.965197
	160sec	0.569905	0.585741	0.643376	0.726313	0.978146
FAST	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.618886	0.536417	0.621787	0.688647	0.734510
	10sec	0.619197	0.536328	0.621872	0.688721	0.734338
	20sec	0.619591	0.536229	0.621487	0.688829	0.733921
	40sec	0.619570	0.536453	0.620060	0.688374	0.733797
	80sec	0.619584	0.536414	0.618544	0.687153	0.732905
	160sec	0.620573	0.537496	0.612356	0.684587	0.733599
SACK	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.693420	0.701528	0.772085	0.869846	0.949554
	10sec	0.693110	0.701197	0.771822	0.870152	0.950635
	20sec	0.692460	0.700568	0.771384	0.870796	0.952176
	40sec	0.691193	0.699268	0.771935	0.873131	0.954178
	80sec	0.690689	0.698856	0.771601	0.874366	0.958986
	160sec	0.687495	0.697051	0.776172	0.877291	0.964888

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 22ms 42ms 82ms 162ms ) as well as each measurement interval

Protocol		16ms	22ms	42ms	82ms	162ms
CUBIC	1sec	0.004324	0.004510	0.005835	0.009636	0.011804
	5sec	0.001140	0.001319	0.001977	0.005450	0.006630
	10sec	0.000594	0.000692	0.001253	0.003968	0.004615
	20sec	0.000302	0.000399	0.000748	0.002895	0.003124
	40sec	0.000150	0.000226	0.000489	0.002053	0.002468
	80sec	0.000056	0.000126	0.000287	0.001355	0.001762
	160sec	0.000031	0.000074	0.000158	0.000875	0.001352
BIC	1sec	0.004439	0.006037	0.009156	0.011585	0.014051
	5sec	0.001419	0.002128	0.003349	0.005095	0.007120
	10sec	0.000907	0.001447	0.001723	0.003455	0.005631
	20sec	0.000591	0.001005	0.001116	0.002515	0.004339
	40sec	0.000390	0.000708	0.000705	0.001729	0.002695
	80sec	0.000259	0.000459	0.000487	0.001152	0.001961
	160sec	0.000172	0.000306	0.000345	0.000731	0.001397
HTCP	1sec	0.009422	0.012772	0.075667	0.038132	0.053499
	5sec	0.005637	0.007135	0.062454	0.029721	0.043885
	10sec	0.003536	0.004447	0.046609	0.021968	0.036320
	20sec	0.002412	0.003089	0.036156	0.018704	0.029961
	40sec	0.001745	0.001987	0.024200	0.014658	0.025002
	80sec	0.001145	0.001419	0.021045	0.008387	0.019939
	160sec	0.000827	0.001222	0.016549	0.003233	0.018128
HSTCP	1sec	0.007465	0.012113	0.009912	0.020111	0.034393
	5sec	0.001900	0.006213	0.004016	0.013097	0.027235
	10sec	0.001037	0.004527	0.002589	0.010181	0.021728
	20sec	0.000648	0.002882	0.001711	0.007420	0.016382
	40sec	0.000421	0.002050	0.001149	0.004727	0.011810
	80sec	0.000269	0.001538	0.000772	0.003245	0.008152
	160sec	0.000178	0.000703	0.000498	0.002456	0.005803
STCP	1sec	0.009246	0.010686	0.019221	0.026941	0.046172
	5sec	0.002819	0.003752	0.009005	0.012190	0.020696
	10sec	0.001794	0.002537	0.006317	0.008544	0.013863
	20sec	0.001191	0.001715	0.004859	0.006144	0.008296
	40sec	0.000796	0.001144	0.003285	0.004097	0.006067
	80sec	0.000540	0.000790	0.002264	0.002872	0.004314
	160sec	0.000352	0.000509	0.001345	0.002171	0.002971
FAST	1sec	0.006941	0.006136	0.014853	0.020385	0.058665
	5sec	0.002364	0.001764	0.007763	0.011303	0.038224
	10sec	0.001682	0.001102	0.005708	0.007997	0.028136
	20sec	0.001138	0.000646	0.003640	0.005567	0.021623
	40sec	0.000775	0.000390	0.002581	0.004038	0.016451
	80sec	0.000518	0.000256	0.001705	0.003271	0.010650
	160sec	0.000384	0.000142	0.001141	0.002529	0.005589
SACK	1sec	0.009865	0.015911	0.033331	0.052578	0.070005
	5sec	0.006210	0.012688	0.029412	0.049092	0.065384
	10sec	0.004361	0.009375	0.025665	0.045325	0.061646
	20sec	0.002855	0.007301	0.019246	0.038015	0.053931
	40sec	0.002081	0.005075	0.013252	0.026583	0.043142
	80sec	0.001354	0.003402	0.008811	0.018892	0.036113
	160sec	0.000979	0.002757	0.006161	0.010439	0.031380