$ 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":	60992,
				"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 20:14:39 GMT",
			"timesecs":	1778271279
		},
		"connecting_to":	{
			"host":	"10.11.11.2",
			"port":	5201
		},
		"cookie":	"2fhmewj6ndwup5znhv7qttojnp4ppgqjwmrm",
		"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":	1.000904,
					"seconds":	1.0009039640426636,
					"bytes":	117702656,
					"bits_per_second":	940770825.00181139,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	0,
				"end":	1.000904,
				"seconds":	1.0009039640426636,
				"bytes":	117702656,
				"bits_per_second":	940770825.00181139,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	1.000904,
					"end":	2.000908,
					"seconds":	1.0000040531158447,
					"bytes":	117702656,
					"bits_per_second":	941617431.5154686,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	1.000904,
				"end":	2.000908,
				"seconds":	1.0000040531158447,
				"bytes":	117702656,
				"bits_per_second":	941617431.5154686,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	2.000908,
					"end":	3.000911,
					"seconds":	1.0000029802322388,
					"bytes":	117702656,
					"bits_per_second":	941618441.75836325,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	2.000908,
				"end":	3.000911,
				"seconds":	1.0000029802322388,
				"bytes":	117702656,
				"bits_per_second":	941618441.75836325,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	3.000911,
					"end":	4.000835,
					"seconds":	0.99992400407791138,
					"bytes":	117571584,
					"bits_per_second":	940644157.12007761,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	3.000911,
				"end":	4.000835,
				"seconds":	0.99992400407791138,
				"bytes":	117571584,
				"bits_per_second":	940644157.12007761,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	4.000835,
					"end":	5.000848,
					"seconds":	1.000012993812561,
					"bytes":	117702656,
					"bits_per_second":	941609012.90898049,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	4.000835,
				"end":	5.000848,
				"seconds":	1.000012993812561,
				"bytes":	117702656,
				"bits_per_second":	941609012.90898049,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	5.000848,
					"end":	6.00085,
					"seconds":	1.0000020265579224,
					"bytes":	117702656,
					"bits_per_second":	941619339.753867,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	5.000848,
				"end":	6.00085,
				"seconds":	1.0000020265579224,
				"bytes":	117702656,
				"bits_per_second":	941619339.753867,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	6.00085,
					"end":	7.000849,
					"seconds":	0.99999898672103882,
					"bytes":	117702656,
					"bits_per_second":	941622202.12596679,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	6.00085,
				"end":	7.000849,
				"seconds":	0.99999898672103882,
				"bytes":	117702656,
				"bits_per_second":	941622202.12596679,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	7.000849,
					"end":	8.000848,
					"seconds":	0.99999898672103882,
					"bytes":	117702656,
					"bits_per_second":	941622202.12596679,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	7.000849,
				"end":	8.000848,
				"seconds":	0.99999898672103882,
				"bytes":	117702656,
				"bits_per_second":	941622202.12596679,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	8.000848,
					"end":	9.000851,
					"seconds":	1.0000029802322388,
					"bytes":	117702656,
					"bits_per_second":	941618441.75836325,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	8.000848,
				"end":	9.000851,
				"seconds":	1.0000029802322388,
				"bytes":	117702656,
				"bits_per_second":	941618441.75836325,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	9.000851,
					"end":	10.00085,
					"seconds":	0.99999898672103882,
					"bytes":	117571584,
					"bits_per_second":	940573625.06346571,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	9.000851,
				"end":	10.00085,
				"seconds":	0.99999898672103882,
				"bytes":	117571584,
				"bits_per_second":	940573625.06346571,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	10.00085,
					"end":	11.000849,
					"seconds":	0.99999898672103882,
					"bytes":	117702656,
					"bits_per_second":	941622202.12596679,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	10.00085,
				"end":	11.000849,
				"seconds":	0.99999898672103882,
				"bytes":	117702656,
				"bits_per_second":	941622202.12596679,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	11.000849,
					"end":	12.00085,
					"seconds":	1.0000009536743164,
					"bytes":	117702656,
					"bits_per_second":	941620350.0008564,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	11.000849,
				"end":	12.00085,
				"seconds":	1.0000009536743164,
				"bytes":	117702656,
				"bits_per_second":	941620350.0008564,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	12.00085,
					"end":	13.000854,
					"seconds":	1.0000040531158447,
					"bytes":	117571584,
					"bits_per_second":	940568859.76545143,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	12.00085,
				"end":	13.000854,
				"seconds":	1.0000040531158447,
				"bytes":	117571584,
				"bits_per_second":	940568859.76545143,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	13.000854,
					"end":	14.000863,
					"seconds":	1.0000089406967163,
					"bytes":	117702656,
					"bits_per_second":	941612829.325269,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	13.000854,
				"end":	14.000863,
				"seconds":	1.0000089406967163,
				"bytes":	117702656,
				"bits_per_second":	941612829.325269,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	14.000863,
					"end":	15.000853,
					"seconds":	0.99998998641967773,
					"bytes":	117702656,
					"bits_per_second":	941630677.094419,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	14.000863,
				"end":	15.000853,
				"seconds":	0.99998998641967773,
				"bytes":	117702656,
				"bits_per_second":	941630677.094419,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	15.000853,
					"end":	16.000851,
					"seconds":	0.99999797344207764,
					"bytes":	117702656,
					"bits_per_second":	941623156.253867,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	15.000853,
				"end":	16.000851,
				"seconds":	0.99999797344207764,
				"bytes":	117702656,
				"bits_per_second":	941623156.253867,
				"omitted":	false,
				"sender":	false
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	16.000851,
					"end":	17.000849,
					"seconds":	0.99999797344207764,
					"bytes":	117702656,
					"bits_per_second":	941623156.253867,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	16.000851,
				"end":	17.000849,
				"seconds":	0.99999797344207764,
				"bytes":	117702656,
				"bits_per_second":	941623156.253867,
				"omitted":	false,
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			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	17.000849,
					"end":	18.000855,
					"seconds":	1.0000059604644775,
					"bytes":	117571584,
					"bits_per_second":	940567065.78341568,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	17.000849,
				"end":	18.000855,
				"seconds":	1.0000059604644775,
				"bytes":	117571584,
				"bits_per_second":	940567065.78341568,
				"omitted":	false,
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			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	18.000855,
					"end":	19.000863,
					"seconds":	1.0000079870224,
					"bytes":	117702656,
					"bits_per_second":	941613727.310068,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	18.000855,
				"end":	19.000863,
				"seconds":	1.0000079870224,
				"bytes":	117702656,
				"bits_per_second":	941613727.310068,
				"omitted":	false,
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			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	19.000863,
					"end":	20.000862,
					"seconds":	0.99999898672103882,
					"bytes":	117702656,
					"bits_per_second":	941622202.12596679,
					"omitted":	false,
					"sender":	false
				}],
			"sum":	{
				"start":	19.000863,
				"end":	20.000862,
				"seconds":	0.99999898672103882,
				"bytes":	117702656,
				"bits_per_second":	941622202.12596679,
				"omitted":	false,
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			}
		}],
	"end":	{
		"streams":	[{
				"sender":	{
					"socket":	5,
					"start":	0,
					"end":	20.000982,
					"seconds":	20.000982,
					"bytes":	2355494912,
					"bits_per_second":	942151705.151277,
					"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,
					"end":	20.000862,
					"seconds":	20.000862,
					"bytes":	2353659904,
					"bits_per_second":	941423386.25205243,
					"sender":	false
				}
			}],
		"sum_sent":	{
			"start":	0,
			"end":	20.000982,
			"seconds":	20.000982,
			"bytes":	2355494912,
			"bits_per_second":	942151705.151277,
			"retransmits":	0,
			"sender":	false
		},
		"sum_received":	{
			"start":	0,
			"end":	20.000862,
			"seconds":	20.000862,
			"bytes":	2353659904,
			"bits_per_second":	941423386.25205243,
			"sender":	false
		},
		"cpu_utilization_percent":	{
			"host_total":	15.417229222266155,
			"host_user":	1.6927454196185736,
			"host_system":	13.724473805361844,
			"remote_total":	1.610577860529113,
			"remote_user":	0.15295219943782867,
			"remote_system":	1.4576206613462714
		},
		"sender_tcp_congestion":	"cubic",
		"receiver_tcp_congestion":	"cubic"
	}
}

STDERR
