RTT Fairness

Experimental Setting

Bottleneck Bandwidth: 400Mbs
Queue size: 2000 Kbytes
Background traffic: YES
Long-Lived flows: forward direction (None!), backward direction (None!)
Short-Lived flows: None! (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	0.910214 [1] [2] [3] [4] [5]	0.574114 [1] [2] [3] [4] [5]	0.979671 [1]	0.785827 [1] [2] [3] [4] [5]	0.523063 [1] [2] [3] [4] [5]	0.918976 [1] [2] [3] [4] [5]	0.675867 [1] [2] [3] [4] [5]
22ms	0.896989 [1] [2] [3] [4] [5]	0.585947 [1] [2] [3] [4] [5]	0.999080 [1]	0.771699 [1] [2] [3] [4] [5]	0.521887 [1] [2] [3] [4] [5]	0.913766 [1] [2] [3] [4] [5]	0.694511 [1] [2] [3] [4] [5]
42ms	0.940352 [1] [2] [3] [4] [5]	0.657404 [1] [2] [3] [4] [5]	0.990966 [1]	0.835838 [1] [2] [3] [4] [5]	0.533038 [1] [2] [3] [4] [5]	0.993890 [1] [2] [3] [4] [5]	0.723481 [1] [2] [3] [4] [5]
82ms	0.966098 [1] [2] [3] [4] [5]	0.748094 [1] [2] [3] [4] [5]	0.993394 [1]	0.968121 [1] [2] [3] [4] [5]	0.598821 [1] [2] [3] [4] [5]	0.994467 [1] [2] [3] [4] [5]	0.888019 [1] [2] [3] [4] [5]
162ms	0.999588 [1] [2] [3] [4] [5]	0.998820 [1] [2] [3] [4] [5]	0.998999 [1]	0.901792 [1] [2] [3] [4] [5]	0.990173 [1] [2] [3] [4] [5]	0.995548 [1] [2] [3] [4] [5]	0.972171 [1] [2] [3] [4] [5]

1.2 Throughput Ratio for RTT fairness

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	0.522787 [1] [2] [3] [4] [5]	0.074532 [1] [2] [3] [4] [5]	0.748174 [1]	0.314063 [1] [2] [3] [4] [5]	0.023076 [1] [2] [3] [4] [5]	0.798000 [1] [2] [3] [4] [5]	0.181892 [1] [2] [3] [4] [5]
22ms	0.513375 [1] [2] [3] [4] [5]	0.086605 [1] [2] [3] [4] [5]	0.941088 [1]	0.296762 [1] [2] [3] [4] [5]	0.021898 [1] [2] [3] [4] [5]	0.711907 [1] [2] [3] [4] [5]	0.204107 [1] [2] [3] [4] [5]
42ms	0.599545 [1] [2] [3] [4] [5]	0.161582 [1] [2] [3] [4] [5]	0.825681 [1]	0.389072 [1] [2] [3] [4] [5]	0.033076 [1] [2] [3] [4] [5]	0.860495 [1] [2] [3] [4] [5]	0.238738 [1] [2] [3] [4] [5]
82ms	0.691056 [1] [2] [3] [4] [5]	0.265710 [1] [2] [3] [4] [5]	0.849205 [1]	0.722273 [1] [2] [3] [4] [5]	0.099828 [1] [2] [3] [4] [5]	0.863772 [1] [2] [3] [4] [5]	0.486963 [1] [2] [3] [4] [5]
162ms	0.963938 [1] [2] [3] [4] [5]	0.942142 [1] [2] [3] [4] [5]	0.938639 [1]	0.505870 [1] [2] [3] [4] [5]	0.881513 [1] [2] [3] [4] [5]	0.882938 [1] [2] [3] [4] [5]	0.736522 [1] [2] [3] [4] [5]

2. Link Utilization

Link utilization table

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16	0.952987 [1] [2] [3] [4] [5]	0.953858 [1] [2] [3] [4] [5]	0.952817 [1]	0.954576 [1] [2] [3] [4] [5]	0.953047 [1] [2] [3] [4] [5]	0.954472 [1] [2] [3] [4] [5]	0.954456 [1] [2] [3] [4] [5]
22	0.954202 [1] [2] [3] [4] [5]	0.954553 [1] [2] [3] [4] [5]	0.952973 [1]	0.954324 [1] [2] [3] [4] [5]	0.954403 [1] [2] [3] [4] [5]	0.954461 [1] [2] [3] [4] [5]	0.954450 [1] [2] [3] [4] [5]
42	0.950599 [1] [2] [3] [4] [5]	0.954126 [1] [2] [3] [4] [5]	0.937877 [1]	0.952801 [1] [2] [3] [4] [5]	0.942819 [1] [2] [3] [4] [5]	0.954614 [1] [2] [3] [4] [5]	0.887096 [1] [2] [3] [4] [5]
82	0.943203 [1] [2] [3] [4] [5]	0.952058 [1] [2] [3] [4] [5]	0.941462 [1]	0.945869 [1] [2] [3] [4] [5]	0.923122 [1] [2] [3] [4] [5]	0.954615 [1] [2] [3] [4] [5]	0.882870 [1] [2] [3] [4] [5]
162	0.946545 [1] [2] [3] [4] [5]	0.949498 [1] [2] [3] [4] [5]	0.943904 [1]	0.927067 [1] [2] [3] [4] [5]	0.852374 [1] [2] [3] [4] [5]	0.954570 [1] [2] [3] [4] [5]	0.844290 [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	0.000110 [1] [2] [3] [4] [5]	0.000408 [1] [2] [3] [4] [5]	0.000128 [1]	0.000172 [1] [2] [3] [4] [5]	0.001010 [1] [2] [3] [4] [5]	0.000002 [1] [2] [3] [4] [5]	0.000124 [1] [2] [3] [4] [5]
22ms	0.000057 [1] [2] [3] [4] [5]	0.000327 [1] [2] [3] [4] [5]	0.000140 [1]	0.000170 [1] [2] [3] [4] [5]	0.000810 [1] [2] [3] [4] [5]	0.000001 [1] [2] [3] [4] [5]	0.000106 [1] [2] [3] [4] [5]
42ms	0.000101 [1] [2] [3] [4] [5]	0.000219 [1] [2] [3] [4] [5]	0.000189 [1]	0.000176 [1] [2] [3] [4] [5]	0.000992 [1] [2] [3] [4] [5]	0.000000 [1] [2] [3] [4] [5]	0.000123 [1] [2] [3] [4] [5]
82ms	0.000164 [1] [2] [3] [4] [5]	0.000156 [1] [2] [3] [4] [5]	0.000218 [1]	0.000152 [1] [2] [3] [4] [5]	0.000706 [1] [2] [3] [4] [5]	0.000000 [1] [2] [3] [4] [5]	0.000119 [1] [2] [3] [4] [5]
162ms	0.000103 [1] [2] [3] [4] [5]	0.000114 [1] [2] [3] [4] [5]	0.000169 [1]	0.000111 [1] [2] [3] [4] [5]	0.000756 [1] [2] [3] [4] [5]	0.000000 [1] [2] [3] [4] [5]	0.000146 [1] [2] [3] [4] [5]

4. Convergence Time

4.1 Convergence time for two flows

Delay	CUBIC	BIC	HTCP	HSTCP	STCP	FAST	SACK
16ms	95.000000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	25.000000 [1]	857.400000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	231.600000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]
22ms	255.600000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	45.000000 [1]	857.400000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	365.600000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]
42ms	83.000000 [1] [2] [3] [4] [5]	1068.000000 [1] [2] [3] [4] [5]	75.000000 [1]	440.200000 [1] [2] [3] [4] [5]	857.400000 [1] [2] [3] [4] [5]	99.000000 [1] [2] [3] [4] [5]	857.400000 [1] [2] [3] [4] [5]
82ms	49.000000 [1] [2] [3] [4] [5]	444.200000 [1] [2] [3] [4] [5]	25.000000 [1]	263.600000 [1] [2] [3] [4] [5]	646.600000 [1] [2] [3] [4] [5]	15.000000 [1] [2] [3] [4] [5]	588.200000 [1] [2] [3] [4] [5]
162ms	137.000000 [1] [2] [3] [4] [5]	137.000000 [1] [2] [3] [4] [5]	55.000000 [1]	399.600000 [1] [2] [3] [4] [5]	199.000000 [1] [2] [3] [4] [5]	17.000000 [1] [2] [3] [4] [5]	693.000000 [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	0.893530	0.878516	0.926984	0.952687	0.982523
	10sec	0.893720	0.878714	0.927401	0.952837	0.982887
	20sec	0.894303	0.879102	0.928495	0.953033	0.983267
	40sec	0.895105	0.879704	0.929511	0.954598	0.984646
	80sec	0.896918	0.881804	0.930975	0.956428	0.986432
	160sec	0.902661	0.890442	0.934829	0.960015	0.988273
BIC	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.574981	0.587046	0.658392	0.743563	0.984880
	10sec	0.574927	0.586979	0.658378	0.743792	0.985270
	20sec	0.574838	0.586865	0.658266	0.744425	0.985829
	40sec	0.574895	0.587089	0.657562	0.744818	0.986259
	80sec	0.574694	0.586809	0.657330	0.746154	0.987305
	160sec	0.574866	0.588289	0.657098	0.747743	0.989025
HTCP	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.964558	0.988834	0.984926	0.991747	0.991621
	10sec	0.966340	0.989822	0.985741	0.992153	0.991764
	20sec	0.968587	0.991128	0.986914	0.992558	0.991905
	40sec	0.973078	0.992345	0.988588	0.992961	0.991939
	80sec	0.975383	0.994412	0.989993	0.993034	0.994432
	160sec	0.981180	0.996837	0.990592	0.993303	0.996811
HSTCP	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.784896	0.770820	0.832905	0.957068	0.896981
	10sec	0.784983	0.770927	0.833033	0.957377	0.897199
	20sec	0.785135	0.771024	0.833241	0.957693	0.897569
	40sec	0.785505	0.771235	0.833920	0.958415	0.897725
	80sec	0.785712	0.771545	0.834642	0.959269	0.898527
	160sec	0.785791	0.773745	0.835776	0.961716	0.900627
STCP	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.523196	0.522026	0.533816	0.599880	0.912627
	10sec	0.523188	0.522021	0.533844	0.599760	0.914463
	20sec	0.523173	0.522003	0.533895	0.599728	0.919181
	40sec	0.523213	0.522002	0.534064	0.599739	0.925734
	80sec	0.523184	0.521966	0.533877	0.600006	0.942263
	160sec	0.523449	0.522131	0.533927	0.599622	0.966654
FAST	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.918804	0.912942	0.993314	0.993511	0.994094
	10sec	0.918845	0.912952	0.993318	0.993523	0.994227
	20sec	0.918885	0.912970	0.993322	0.993537	0.994449
	40sec	0.918928	0.912934	0.993253	0.993481	0.994532
	80sec	0.918945	0.912970	0.993274	0.993501	0.994630
	160sec	0.919042	0.912846	0.992989	0.993274	0.994431
SACK	1sec	0.500000	0.500000	0.500000	0.500000	0.500000
	5sec	0.676651	0.694736	0.723658	0.876719	0.958120
	10sec	0.676633	0.694733	0.723581	0.876797	0.958188
	20sec	0.676610	0.694722	0.723534	0.876882	0.958293
	40sec	0.676279	0.694419	0.724187	0.876866	0.957863
	80sec	0.676199	0.694432	0.723808	0.877373	0.958185
	160sec	0.675851	0.692780	0.725604	0.878953	0.956932

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	0.003825	0.005065	0.008512	0.020431	0.023091
	5sec	0.000926	0.001812	0.004249	0.015255	0.017180
	10sec	0.000463	0.001205	0.003321	0.013177	0.014616
	20sec	0.000196	0.000727	0.002582	0.010335	0.010803
	40sec	0.000109	0.000475	0.001779	0.008266	0.009164
	80sec	0.000061	0.000320	0.001188	0.007330	0.006391
	160sec	0.000032	0.000205	0.000770	0.005592	0.004218
BIC	1sec	0.015575	0.008685	0.008560	0.021740	0.021907
	5sec	0.006953	0.003741	0.002253	0.010429	0.012606
	10sec	0.004807	0.002590	0.001415	0.007146	0.008121
	20sec	0.003320	0.001961	0.000935	0.004916	0.004810
	40sec	0.002285	0.001377	0.000620	0.003678	0.003450
	80sec	0.001637	0.000926	0.000389	0.002523	0.002411
	160sec	0.000964	0.000610	0.000257	0.001650	0.001716
HTCP	1sec	0.017845	0.016681	0.044708	0.029206	0.028953
	5sec	0.011253	0.010657	0.035215	0.022910	0.019101
	10sec	0.007729	0.006940	0.025321	0.015710	0.013960
	20sec	0.005703	0.006437	0.022740	0.012473	0.010957
	40sec	0.005071	0.005460	0.014783	0.011864	0.010342
	80sec	0.003420	0.003669	0.012139	0.007992	0.007176
	160sec	0.002846	0.002433	0.010169	0.005047	0.005026
HSTCP	1sec	0.009281	0.010081	0.016924	0.035510	0.069865
	5sec	0.002218	0.002289	0.007225	0.016704	0.052401
	10sec	0.001455	0.001506	0.004788	0.009462	0.044605
	20sec	0.000974	0.001020	0.003431	0.006540	0.035236
	40sec	0.000604	0.000674	0.002246	0.004836	0.023755
	80sec	0.000419	0.000444	0.001499	0.003447	0.018170
	160sec	0.000268	0.000311	0.001037	0.002245	0.012435
STCP	1sec	0.024027	0.014729	0.035027	0.065189	0.181537
	5sec	0.010371	0.006153	0.016714	0.041166	0.131409
	10sec	0.007167	0.003979	0.011403	0.028216	0.106226
	20sec	0.004695	0.002680	0.007746	0.019546	0.088807
	40sec	0.003220	0.001938	0.005035	0.013057	0.075489
	80sec	0.002348	0.001298	0.003543	0.009076	0.064101
	160sec	0.001732	0.000919	0.002563	0.005846	0.052389
FAST	1sec	0.001519	0.000999	0.000858	0.000857	0.001148
	5sec	0.000561	0.000374	0.000232	0.000220	0.000357
	10sec	0.000382	0.000255	0.000147	0.000144	0.000234
	20sec	0.000258	0.000182	0.000093	0.000091	0.000161
	40sec	0.000180	0.000126	0.000052	0.000057	0.000117
	80sec	0.000136	0.000099	0.000033	0.000037	0.000090
	160sec	0.000081	0.000079	0.000019	0.000025	0.000071
SACK	1sec	0.003561	0.003662	0.074969	0.109005	0.153292
	5sec	0.001520	0.001585	0.072127	0.107707	0.152469
	10sec	0.001021	0.001086	0.068756	0.105278	0.150377
	20sec	0.000653	0.000713	0.063204	0.100983	0.147196
	40sec	0.000355	0.000428	0.056257	0.092323	0.138274
	80sec	0.000167	0.000177	0.037483	0.082197	0.132196
	160sec	0.000082	0.000112	0.016923	0.049261	0.110738