Testing to a dedicated Cogent server in California yielded the best results; however, even testing to their pool of iperf servers provided a transfer of 796 Mb/s. The trick was to run multiple threads (50).
Marco Coelho [r...@ns1 ~]# iperf -c dca.iperf.cogentco.com -w 256000 -P 50 -C ------------------------------------------------------------ Client connecting to dca.iperf.cogentco.com, TCP port 5001 TCP window size: 256 KByte (WARNING: requested 250 KByte) ------------------------------------------------------------ [ 49] local 64.202.224.2 port 38472 connected with 38.99.216.146 port 5001 [ 3] local 64.202.224.2 port 33333 connected with 38.99.216.150 port 5001 [ 10] local 64.202.224.2 port 38426 connected with 38.99.216.146 port 5001 [ 5] local 64.202.224.2 port 33331 connected with 38.99.216.150 port 5001 [ 4] local 64.202.224.2 port 33335 connected with 38.99.216.150 port 5001 [ 8] local 64.202.224.2 port 38428 connected with 38.99.216.146 port 5001 [ 11] local 64.202.224.2 port 33337 connected with 38.99.216.150 port 5001 [ 16] local 64.202.224.2 port 33339 connected with 38.99.216.150 port 5001 [ 18] local 64.202.224.2 port 38432 connected with 38.99.216.146 port 5001 [ 6] local 64.202.224.2 port 38430 connected with 38.99.216.146 port 5001 [ 12] local 64.202.224.2 port 33341 connected with 38.99.216.150 port 5001 [ 17] local 64.202.224.2 port 38434 connected with 38.99.216.146 port 5001 [ 15] local 64.202.224.2 port 38436 connected with 38.99.216.146 port 5001 [ 14] local 64.202.224.2 port 33343 connected with 38.99.216.150 port 5001 [ 13] local 64.202.224.2 port 33345 connected with 38.99.216.150 port 5001 [ 20] local 64.202.224.2 port 38438 connected with 38.99.216.146 port 5001 [ 24] local 64.202.224.2 port 38439 connected with 38.99.216.146 port 5001 [ 27] local 64.202.224.2 port 33348 connected with 38.99.216.150 port 5001 [ 28] local 64.202.224.2 port 38442 connected with 38.99.216.146 port 5001 [ 23] local 64.202.224.2 port 33351 connected with 38.99.216.150 port 5001 [ 19] local 64.202.224.2 port 33349 connected with 38.99.216.150 port 5001 [ 29] local 64.202.224.2 port 38445 connected with 38.99.216.146 port 5001 [ 33] local 64.202.224.2 port 33352 connected with 38.99.216.150 port 5001 [ 21] local 64.202.224.2 port 33355 connected with 38.99.216.150 port 5001 [ 31] local 64.202.224.2 port 38448 connected with 38.99.216.146 port 5001 [ 44] local 64.202.224.2 port 33357 connected with 38.99.216.150 port 5001 [ 32] local 64.202.224.2 port 38446 connected with 38.99.216.146 port 5001 [ 30] local 64.202.224.2 port 38450 connected with 38.99.216.146 port 5001 [ 46] local 64.202.224.2 port 38451 connected with 38.99.216.146 port 5001 [ 47] local 64.202.224.2 port 33360 connected with 38.99.216.150 port 5001 [ 36] local 64.202.224.2 port 33362 connected with 38.99.216.150 port 5001 [ 51] local 64.202.224.2 port 33363 connected with 38.99.216.150 port 5001 [ 48] local 64.202.224.2 port 38456 connected with 38.99.216.146 port 5001 [ 40] local 64.202.224.2 port 38453 connected with 38.99.216.146 port 5001 [ 37] local 64.202.224.2 port 38458 connected with 38.99.216.146 port 5001 [ 26] local 64.202.224.2 port 33365 connected with 38.99.216.150 port 5001 [ 22] local 64.202.224.2 port 38460 connected with 38.99.216.146 port 5001 [ 43] local 64.202.224.2 port 38461 connected with 38.99.216.146 port 5001 [ 42] local 64.202.224.2 port 33367 connected with 38.99.216.150 port 5001 [ 52] local 64.202.224.2 port 38463 connected with 38.99.216.146 port 5001 [ 25] local 64.202.224.2 port 38464 connected with 38.99.216.146 port 5001 [ 38] local 64.202.224.2 port 33373 connected with 38.99.216.150 port 5001 [ 39] local 64.202.224.2 port 38467 connected with 38.99.216.146 port 5001 [ 50] local 64.202.224.2 port 38462 connected with 38.99.216.146 port 5001 [ 35] local 64.202.224.2 port 33374 connected with 38.99.216.150 port 5001 [ 9] local 64.202.224.2 port 33378 connected with 38.99.216.150 port 5001 [ 41] local 64.202.224.2 port 33377 connected with 38.99.216.150 port 5001 [ 45] local 64.202.224.2 port 33379 connected with 38.99.216.150 port 5001 [ 7] local 64.202.224.2 port 38424 connected with 38.99.216.146 port 5001 [ 34] local 64.202.224.2 port 33375 connected with 38.99.216.150 port 5001 [ ID] Interval Transfer Bandwidth [ 19] 0.0-10.0 sec 37.2 MBytes 31.2 Mbits/sec [ ID] Interval Transfer Bandwidth [ 36] 0.0-10.0 sec 21.1 MBytes 17.7 Mbits/sec [ ID] Interval Transfer Bandwidth [ 32] 0.0-10.0 sec 43.3 MBytes 36.3 Mbits/sec [ ID] Interval Transfer Bandwidth [ 30] 0.0-10.0 sec 42.9 MBytes 35.9 Mbits/sec [ ID] Interval Transfer Bandwidth [ 40] 0.0-10.0 sec 44.1 MBytes 36.9 Mbits/sec [ ID] Interval Transfer Bandwidth [ 44] 0.0-10.0 sec 17.1 MBytes 14.3 Mbits/sec [ ID] Interval Transfer Bandwidth [ 5] 0.0-10.0 sec 29.2 MBytes 24.5 Mbits/sec [ ID] Interval Transfer Bandwidth [ 26] 0.0-10.0 sec 42.6 MBytes 35.6 Mbits/sec [ ID] Interval Transfer Bandwidth [ 38] 0.0-10.0 sec 27.8 MBytes 23.3 Mbits/sec [ ID] Interval Transfer Bandwidth [ 39] 0.0-10.0 sec 43.4 MBytes 36.2 Mbits/sec [ ID] Interval Transfer Bandwidth [ 33] 0.0-10.0 sec 8.51 MBytes 7.11 Mbits/sec [ ID] Interval Transfer Bandwidth [ 7] 0.0-10.0 sec 43.0 MBytes 35.9 Mbits/sec [ ID] Interval Transfer Bandwidth [ 50] 0.0-10.1 sec 42.8 MBytes 35.7 Mbits/sec [ ID] Interval Transfer Bandwidth [ 16] 0.0-10.1 sec 8.88 MBytes 7.41 Mbits/sec [ ID] Interval Transfer Bandwidth [ 9] 0.0-10.1 sec 43.8 MBytes 36.5 Mbits/sec [ ID] Interval Transfer Bandwidth [ 21] 0.0-10.1 sec 8.38 MBytes 6.99 Mbits/sec [ ID] Interval Transfer Bandwidth [ 4] 0.0-10.1 sec 5.40 MBytes 4.50 Mbits/sec [ ID] Interval Transfer Bandwidth [ 34] 0.0-10.1 sec 11.8 MBytes 9.81 Mbits/sec [ ID] Interval Transfer Bandwidth [ 47] 0.0-10.1 sec 18.2 MBytes 15.2 Mbits/sec [ ID] Interval Transfer Bandwidth [ 28] 0.0-10.1 sec 38.0 MBytes 31.6 Mbits/sec [ ID] Interval Transfer Bandwidth [ 17] 0.0-10.1 sec 13.7 MBytes 11.4 Mbits/sec [ ID] Interval Transfer Bandwidth [ 8] 0.0-10.1 sec 14.0 MBytes 11.6 Mbits/sec [ ID] Interval Transfer Bandwidth [ 35] 0.0-10.1 sec 18.0 MBytes 15.0 Mbits/sec [ ID] Interval Transfer Bandwidth [ 29] 0.0-10.1 sec 25.9 MBytes 21.6 Mbits/sec [ ID] Interval Transfer Bandwidth [ 13] 0.0-10.1 sec 7.64 MBytes 6.36 Mbits/sec [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.1 sec 6.95 MBytes 5.77 Mbits/sec [ ID] Interval Transfer Bandwidth [ 20] 0.0-10.1 sec 19.6 MBytes 16.3 Mbits/sec [ ID] Interval Transfer Bandwidth [ 48] 0.0-10.1 sec 10.6 MBytes 8.79 Mbits/sec [ ID] Interval Transfer Bandwidth [ 52] 0.0-10.1 sec 14.4 MBytes 11.9 Mbits/sec [ ID] Interval Transfer Bandwidth [ 43] 0.0-10.1 sec 14.8 MBytes 12.2 Mbits/sec [ ID] Interval Transfer Bandwidth [ 23] 0.0-10.1 sec 21.5 MBytes 17.8 Mbits/sec [ ID] Interval Transfer Bandwidth [ 22] 0.0-10.1 sec 28.7 MBytes 23.7 Mbits/sec [ ID] Interval Transfer Bandwidth [ 45] 0.0-10.1 sec 31.9 MBytes 26.4 Mbits/sec [ ID] Interval Transfer Bandwidth [ 41] 0.0-10.1 sec 12.4 MBytes 10.3 Mbits/sec [ ID] Interval Transfer Bandwidth [ 27] 0.0-10.1 sec 27.0 MBytes 22.3 Mbits/sec [ ID] Interval Transfer Bandwidth [ 14] 0.0-10.2 sec 9.62 MBytes 7.92 Mbits/sec [ ID] Interval Transfer Bandwidth [ 24] 0.0-10.2 sec 27.0 MBytes 22.2 Mbits/sec [ ID] Interval Transfer Bandwidth [ 15] 0.0-10.2 sec 5.79 MBytes 4.75 Mbits/sec [ ID] Interval Transfer Bandwidth [ 31] 0.0-10.2 sec 14.1 MBytes 11.5 Mbits/sec [ ID] Interval Transfer Bandwidth [ 12] 0.0-10.3 sec 18.6 MBytes 15.2 Mbits/sec [ ID] Interval Transfer Bandwidth [ 6] 0.0-10.3 sec 3.77 MBytes 3.06 Mbits/sec [ ID] Interval Transfer Bandwidth [ 25] 0.0-10.4 sec 39.8 MBytes 32.1 Mbits/sec [ ID] Interval Transfer Bandwidth [ 49] 0.0-10.5 sec 3.77 MBytes 3.01 Mbits/sec [ ID] Interval Transfer Bandwidth [ 51] 0.0-10.6 sec 10.6 MBytes 8.42 Mbits/sec [ ID] Interval Transfer Bandwidth [ 42] 0.0-10.6 sec 12.5 MBytes 9.87 Mbits/sec [ ID] Interval Transfer Bandwidth [ 37] 0.0-10.8 sec 16.9 MBytes 13.1 Mbits/sec [ ID] Interval Transfer Bandwidth [ 18] 0.0-11.0 sec 7.46 MBytes 5.71 Mbits/sec [ ID] Interval Transfer Bandwidth [ 10] 0.0-11.0 sec 10.2 MBytes 7.78 Mbits/sec [ ID] Interval Transfer Bandwidth [ 11] 0.0-11.0 sec 9.41 MBytes 7.18 Mbits/sec [ ID] Interval Transfer Bandwidth [ 46] 0.0-11.1 sec 19.3 MBytes 14.6 Mbits/sec [SUM] 0.0-11.1 sec 1.03 GBytes 796 Mbits/sec [r...@ns1 ~]# [r...@ns1 ~]# -------------------------------------------------------------------------------- WISPA Wants You! 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