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

STDOUT
{
	"start":	{
		"connected":	[{
				"socket":	5,
				"local_host":	"10.11.11.3",
				"local_port":	58080,
				"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 20:14:09 GMT",
			"timesecs":	1778271249
		},
		"connecting_to":	{
			"host":	"10.11.11.2",
			"port":	5201
		},
		"cookie":	"gfa4wzua3dncomzmumyzdbn3k6ycoebqot3l",
		"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":	0,
			"tos":	0,
			"target_bitrate":	0,
			"bidir":	0,
			"fqrate":	0
		}
	},
	"intervals":	[{
			"streams":	[{
					"socket":	5,
					"start":	0,
					"end":	1.00106,
					"seconds":	1.0010600090026855,
					"bytes":	119799808,
					"bits_per_second":	957383628.73451769,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	528384,
					"rtt":	2111,
					"rttvar":	111,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	0,
				"end":	1.00106,
				"seconds":	1.0010600090026855,
				"bytes":	119799808,
				"bits_per_second":	957383628.73451769,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	1.00106,
					"end":	2.001052,
					"seconds":	0.9999920129776,
					"bytes":	117440512,
					"bits_per_second":	939531600.059935,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	536064,
					"rtt":	2168,
					"rttvar":	117,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	1.00106,
				"end":	2.001052,
				"seconds":	0.9999920129776,
				"bytes":	117440512,
				"bits_per_second":	939531600.059935,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	2.001052,
					"end":	3.00106,
					"seconds":	1.0000079870224,
					"bytes":	118095872,
					"bits_per_second":	944759430.18526864,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	556544,
					"rtt":	2132,
					"rttvar":	100,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	2.001052,
				"end":	3.00106,
				"seconds":	1.0000079870224,
				"bytes":	118095872,
				"bits_per_second":	944759430.18526864,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	3.00106,
					"end":	4.001052,
					"seconds":	0.9999920129776,
					"bytes":	117440512,
					"bits_per_second":	939531600.059935,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	592384,
					"rtt":	2152,
					"rttvar":	96,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	3.00106,
				"end":	4.001052,
				"seconds":	0.9999920129776,
				"bytes":	117440512,
				"bits_per_second":	939531600.059935,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	4.001052,
					"end":	5.001063,
					"seconds":	1.0000109672546387,
					"bytes":	117309440,
					"bits_per_second":	938465227.61287928,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	571904,
					"rtt":	2130,
					"rttvar":	73,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	4.001052,
				"end":	5.001063,
				"seconds":	1.0000109672546387,
				"bytes":	117309440,
				"bits_per_second":	938465227.61287928,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	5.001063,
					"end":	6.001051,
					"seconds":	0.9999880194664,
					"bytes":	118226944,
					"bits_per_second":	945826883.51075757,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	577024,
					"rtt":	2137,
					"rttvar":	64,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	5.001063,
				"end":	6.001051,
				"seconds":	0.9999880194664,
				"bytes":	118226944,
				"bits_per_second":	945826883.51075757,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	6.001051,
					"end":	7.001056,
					"seconds":	1.0000050067901611,
					"bytes":	117309440,
					"bits_per_second":	938470821.2735256,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	587264,
					"rtt":	2163,
					"rttvar":	68,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	6.001051,
				"end":	7.001056,
				"seconds":	1.0000050067901611,
				"bytes":	117309440,
				"bits_per_second":	938470821.2735256,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	7.001056,
					"end":	8.001059,
					"seconds":	1.0000029802322388,
					"bytes":	117440512,
					"bits_per_second":	939521296.00834465,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	539648,
					"rtt":	2159,
					"rttvar":	92,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	7.001056,
				"end":	8.001059,
				"seconds":	1.0000029802322388,
				"bytes":	117440512,
				"bits_per_second":	939521296.00834465,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	8.001059,
					"end":	9.001061,
					"seconds":	1.0000020265579224,
					"bytes":	117309440,
					"bits_per_second":	938473618.12885427,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	592384,
					"rtt":	2079,
					"rttvar":	130,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	8.001059,
				"end":	9.001061,
				"seconds":	1.0000020265579224,
				"bytes":	117309440,
				"bits_per_second":	938473618.12885427,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	9.001061,
					"end":	10.001051,
					"seconds":	0.99998998641967773,
					"bytes":	117440512,
					"bits_per_second":	939533504.09420872,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	614400,
					"rtt":	2145,
					"rttvar":	110,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	9.001061,
				"end":	10.001051,
				"seconds":	0.99998998641967773,
				"bytes":	117440512,
				"bits_per_second":	939533504.09420872,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	10.001051,
					"end":	11.001051,
					"seconds":	1,
					"bytes":	118095872,
					"bits_per_second":	944766976,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	582144,
					"rtt":	2141,
					"rttvar":	88,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	10.001051,
				"end":	11.001051,
				"seconds":	1,
				"bytes":	118095872,
				"bits_per_second":	944766976,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	11.001051,
					"end":	12.001061,
					"seconds":	1.0000100135803223,
					"bytes":	117440512,
					"bits_per_second":	939514688.09420681,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	614400,
					"rtt":	2159,
					"rttvar":	86,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	11.001051,
				"end":	12.001061,
				"seconds":	1.0000100135803223,
				"bytes":	117440512,
				"bits_per_second":	939514688.09420681,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	12.001061,
					"end":	13.001061,
					"seconds":	1,
					"bytes":	117309440,
					"bits_per_second":	938475520,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	597504,
					"rtt":	2144,
					"rttvar":	72,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	12.001061,
				"end":	13.001061,
				"seconds":	1,
				"bytes":	117309440,
				"bits_per_second":	938475520,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	13.001061,
					"end":	14.001064,
					"seconds":	1.0000029802322388,
					"bytes":	118226944,
					"bits_per_second":	945812733.25840056,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	605184,
					"rtt":	2153,
					"rttvar":	70,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	13.001061,
				"end":	14.001064,
				"seconds":	1.0000029802322388,
				"bytes":	118226944,
				"bits_per_second":	945812733.25840056,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	14.001064,
					"end":	15.001061,
					"seconds":	0.99999701976776123,
					"bytes":	117309440,
					"bits_per_second":	938478316.88333535,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	560128,
					"rtt":	2168,
					"rttvar":	106,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	14.001064,
				"end":	15.001061,
				"seconds":	0.99999701976776123,
				"bytes":	117309440,
				"bits_per_second":	938478316.88333535,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	15.001061,
					"end":	16.001049,
					"seconds":	0.9999880194664,
					"bytes":	118226944,
					"bits_per_second":	945826883.51075757,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	614400,
					"rtt":	2075,
					"rttvar":	124,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	15.001061,
				"end":	16.001049,
				"seconds":	0.9999880194664,
				"bytes":	118226944,
				"bits_per_second":	945826883.51075757,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	16.001049,
					"end":	17.001065,
					"seconds":	1.0000159740448,
					"bytes":	117309440,
					"bits_per_second":	938460528.989467,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	614400,
					"rtt":	2115,
					"rttvar":	124,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	16.001049,
				"end":	17.001065,
				"seconds":	1.0000159740448,
				"bytes":	117309440,
				"bits_per_second":	938460528.989467,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	17.001065,
					"end":	18.001063,
					"seconds":	0.99999797344207764,
					"bytes":	117440512,
					"bits_per_second":	939526000.00385857,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	614400,
					"rtt":	2142,
					"rttvar":	95,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	17.001065,
				"end":	18.001063,
				"seconds":	0.99999797344207764,
				"bytes":	117440512,
				"bits_per_second":	939526000.00385857,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	18.001063,
					"end":	19.001066,
					"seconds":	1.0000029802322388,
					"bytes":	118095872,
					"bits_per_second":	944764160.383391,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	587264,
					"rtt":	2155,
					"rttvar":	80,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	18.001063,
				"end":	19.001066,
				"seconds":	1.0000029802322388,
				"bytes":	118095872,
				"bits_per_second":	944764160.383391,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}, {
			"streams":	[{
					"socket":	5,
					"start":	19.001066,
					"end":	20.00142,
					"seconds":	1.0003540515899658,
					"bytes":	117440512,
					"bits_per_second":	939191573.7300384,
					"retransmits":	0,
					"snd_cwnd":	380824,
					"snd_wnd":	614400,
					"rtt":	2171,
					"rttvar":	93,
					"pmtu":	1500,
					"omitted":	false,
					"sender":	true
				}],
			"sum":	{
				"start":	19.001066,
				"end":	20.00142,
				"seconds":	1.0003540515899658,
				"bytes":	117440512,
				"bits_per_second":	939191573.7300384,
				"retransmits":	0,
				"omitted":	false,
				"sender":	true
			}
		}],
	"end":	{
		"streams":	[{
				"sender":	{
					"socket":	5,
					"start":	0,
					"end":	20.00142,
					"seconds":	20.00142,
					"bytes":	2355494912,
					"bits_per_second":	942131073.493782,
					"retransmits":	0,
					"max_snd_cwnd":	380824,
					"max_snd_wnd":	614400,
					"max_rtt":	2171,
					"min_rtt":	2075,
					"mean_rtt":	2139,
					"sender":	true
				},
				"receiver":	{
					"socket":	5,
					"start":	0,
					"end":	20.003475,
					"seconds":	20.00142,
					"bytes":	2353922048,
					"bits_per_second":	941405250.0378058,
					"sender":	true
				}
			}],
		"sum_sent":	{
			"start":	0,
			"end":	20.00142,
			"seconds":	20.00142,
			"bytes":	2355494912,
			"bits_per_second":	942131073.493782,
			"retransmits":	0,
			"sender":	true
		},
		"sum_received":	{
			"start":	0,
			"end":	20.003475,
			"seconds":	20.003475,
			"bytes":	2353922048,
			"bits_per_second":	941405250.0378058,
			"sender":	true
		},
		"cpu_utilization_percent":	{
			"host_total":	2.18146376572551,
			"host_user":	0.030448886156552855,
			"host_system":	2.1510048832176256,
			"remote_total":	8.5960102684025159,
			"remote_user":	0.934831357770822,
			"remote_system":	7.6611789106316941
		},
		"sender_tcp_congestion":	"cubic",
		"receiver_tcp_congestion":	"cubic"
	}
}

STDERR
