$ iperf3 -c 10.11.11.2 -p 5201 -t 20 -R -J

STDOUT
{
	"start":	{
		"connected":	[{
				"socket":	5,
				"local_host":	"10.11.11.3",
				"local_port":	46926,
				"remote_host":	"10.11.11.2",
				"remote_port":	5201
			}],
		"version":	"iperf 3.16",
		"system_info":	"Linux ubuntu-HP-ProBook-440-G5 6.17.0-20-generic #20~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Mar 19 01:28:37 UTC 2 x86_64",
		"timestamp":	{
			"time":	"Fri, 08 May 2026 19:59:38 GMT",
			"timesecs":	1778270378
		},
		"connecting_to":	{
			"host":	"10.11.11.2",
			"port":	5201
		},
		"cookie":	"g3brv4ry2lpgxdizd7ncgg2wsjo5zednhmld",
		"tcp_mss_default":	1448,
		"target_bitrate":	0,
		"fq_rate":	0,
		"sock_bufsize":	0,
		"sndbuf_actual":	16384,
		"rcvbuf_actual":	131072,
		"test_start":	{
			"protocol":	"TCP",
			"num_streams":	1,
			"blksize":	131072,
			"omit":	0,
			"duration":	20,
			"bytes":	0,
			"blocks":	0,
			"reverse":	1,
			"tos":	0,
			"target_bitrate":	0,
			"bidir":	0,
			"fqrate":	0
		}
	},
	"intervals":	[{
			"streams":	[{
					"socket":	5,
					"start":	0,
					"end":	1.000655,
					"seconds":	1.0006550550460815,
					"bytes":	117178368,
					"bits_per_second":	936813279.733874,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	0,
				"end":	1.000655,
				"seconds":	1.0006550550460815,
				"bytes":	117178368,
				"bits_per_second":	936813279.733874,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	1.000655,
					"end":	2.000646,
					"seconds":	0.999990999698639,
					"bytes":	117571584,
					"bits_per_second":	940581137.513692,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	1.000655,
				"end":	2.000646,
				"seconds":	0.999990999698639,
				"bytes":	117571584,
				"bits_per_second":	940581137.513692,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	2.000646,
					"end":	3.000651,
					"seconds":	1.0000050067901611,
					"bytes":	117702656,
					"bits_per_second":	941616533.52360439,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	2.000646,
				"end":	3.000651,
				"seconds":	1.0000050067901611,
				"bytes":	117702656,
				"bits_per_second":	941616533.52360439,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	3.000651,
					"end":	4.000647,
					"seconds":	0.9999960064888,
					"bytes":	117702656,
					"bits_per_second":	941625008.390017,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	3.000651,
				"end":	4.000647,
				"seconds":	0.9999960064888,
				"bytes":	117702656,
				"bits_per_second":	941625008.390017,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	4.000647,
					"end":	5.000648,
					"seconds":	1.0000009536743164,
					"bytes":	117702656,
					"bits_per_second":	941620350.0008564,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	4.000647,
				"end":	5.000648,
				"seconds":	1.0000009536743164,
				"bytes":	117702656,
				"bits_per_second":	941620350.0008564,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	5.000648,
					"end":	6.000647,
					"seconds":	0.99999898672103882,
					"bytes":	117702656,
					"bits_per_second":	941622202.12596679,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	5.000648,
				"end":	6.000647,
				"seconds":	0.99999898672103882,
				"bytes":	117702656,
				"bits_per_second":	941622202.12596679,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	6.000647,
					"end":	7.000645,
					"seconds":	0.99999797344207764,
					"bytes":	117702656,
					"bits_per_second":	941623156.253867,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	6.000647,
				"end":	7.000645,
				"seconds":	0.99999797344207764,
				"bytes":	117702656,
				"bits_per_second":	941623156.253867,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	7.000645,
					"end":	8.000647,
					"seconds":	1.0000020265579224,
					"bytes":	117702656,
					"bits_per_second":	941619339.753867,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	7.000645,
				"end":	8.000647,
				"seconds":	1.0000020265579224,
				"bytes":	117702656,
				"bits_per_second":	941619339.753867,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	8.000647,
					"end":	9.001096,
					"seconds":	1.0004489421844482,
					"bytes":	117702656,
					"bits_per_second":	941198704.19773757,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	8.000647,
				"end":	9.001096,
				"seconds":	1.0004489421844482,
				"bytes":	117702656,
				"bits_per_second":	941198704.19773757,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	9.001096,
					"end":	10.00071,
					"seconds":	0.99961400032043457,
					"bytes":	117571584,
					"bits_per_second":	940935872.94544852,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	9.001096,
				"end":	10.00071,
				"seconds":	0.99961400032043457,
				"bytes":	117571584,
				"bits_per_second":	940935872.94544852,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	10.00071,
					"end":	11.000704,
					"seconds":	0.99999397993087769,
					"bytes":	117702656,
					"bits_per_second":	941626916.65912569,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	10.00071,
				"end":	11.000704,
				"seconds":	0.99999397993087769,
				"bytes":	117702656,
				"bits_per_second":	941626916.65912569,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	11.000704,
					"end":	12.001088,
					"seconds":	1.0003839731216431,
					"bytes":	117833728,
					"bits_per_second":	942308003.054518,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	11.000704,
				"end":	12.001088,
				"seconds":	1.0003839731216431,
				"bytes":	117833728,
				"bits_per_second":	942308003.054518,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	12.001088,
					"end":	13.00071,
					"seconds":	0.99962198734283447,
					"bytes":	117571584,
					"bits_per_second":	940928354.82761073,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	12.001088,
				"end":	13.00071,
				"seconds":	0.99962198734283447,
				"bytes":	117571584,
				"bits_per_second":	940928354.82761073,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	13.00071,
					"end":	14.000693,
					"seconds":	0.999983012676239,
					"bytes":	117702656,
					"bits_per_second":	941637243.89672744,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	13.00071,
				"end":	14.000693,
				"seconds":	0.999983012676239,
				"bytes":	117702656,
				"bits_per_second":	941637243.89672744,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	14.000693,
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					"seconds":	0.99999797344207764,
					"bytes":	117702656,
					"bits_per_second":	941623156.253867,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	14.000693,
				"end":	15.000691,
				"seconds":	0.99999797344207764,
				"bytes":	117702656,
				"bits_per_second":	941623156.253867,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	15.000691,
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					"seconds":	0.99995499849319458,
					"bytes":	117571584,
					"bits_per_second":	940615001.092373,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	15.000691,
				"end":	16.000646,
				"seconds":	0.99995499849319458,
				"bytes":	117571584,
				"bits_per_second":	940615001.092373,
				"omitted":	false,
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			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	16.000646,
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					"seconds":	1.0003989934921265,
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					"bits_per_second":	942293854.88423038,
					"omitted":	false,
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				}],
			"sum":	{
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				"seconds":	1.0003989934921265,
				"bytes":	117833728,
				"bits_per_second":	942293854.88423038,
				"omitted":	false,
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			}
		}, {
			"streams":	[{
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					"seconds":	0.99960201978683472,
					"bytes":	117571584,
					"bits_per_second":	940947150.34747255,
					"omitted":	false,
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				}],
			"sum":	{
				"start":	17.001045,
				"end":	18.000647,
				"seconds":	0.99960201978683472,
				"bytes":	117571584,
				"bits_per_second":	940947150.34747255,
				"omitted":	false,
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			}
		}, {
			"streams":	[{
					"socket":	5,
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					"seconds":	1.0003969669342041,
					"bytes":	117702656,
					"bits_per_second":	941247603.824383,
					"omitted":	false,
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				}],
			"sum":	{
				"start":	18.000647,
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				"seconds":	1.0003969669342041,
				"bytes":	117702656,
				"bits_per_second":	941247603.824383,
				"omitted":	false,
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			}
		}, {
			"streams":	[{
					"socket":	5,
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					"seconds":	0.9996190071105957,
					"bytes":	117571584,
					"bits_per_second":	940931160.08141,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
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				"end":	20.000663,
				"seconds":	0.9996190071105957,
				"bytes":	117571584,
				"bits_per_second":	940931160.08141,
				"omitted":	false,
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			}
		}],
	"end":	{
		"streams":	[{
				"sender":	{
					"socket":	5,
					"start":	0,
					"end":	20.001335,
					"seconds":	20.001335,
					"bytes":	2355757056,
					"bits_per_second":	942239927.88481367,
					"retransmits":	0,
					"max_snd_cwnd":	0,
					"max_snd_wnd":	0,
					"max_rtt":	0,
					"min_rtt":	0,
					"mean_rtt":	0,
					"sender":	false
				},
				"receiver":	{
					"socket":	5,
					"start":	0,
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					"seconds":	20.000663,
					"bytes":	2353135616,
					"bits_per_second":	941223044.856063,
					"sender":	false
				}
			}],
		"sum_sent":	{
			"start":	0,
			"end":	20.001335,
			"seconds":	20.001335,
			"bytes":	2355757056,
			"bits_per_second":	942239927.88481367,
			"retransmits":	0,
			"sender":	false
		},
		"sum_received":	{
			"start":	0,
			"end":	20.000663,
			"seconds":	20.000663,
			"bytes":	2353135616,
			"bits_per_second":	941223044.856063,
			"sender":	false
		},
		"cpu_utilization_percent":	{
			"host_total":	15.107873218606024,
			"host_user":	1.4462312194704567,
			"host_system":	13.661641999135568,
			"remote_total":	1.8460988191457115,
			"remote_user":	0.076149795161500722,
			"remote_system":	1.7699440243259374
		},
		"sender_tcp_congestion":	"cubic",
		"receiver_tcp_congestion":	"cubic"
	}
}

STDERR
