$ iperf3 -c 10.11.11.2 -p 5202 -t 20 -u -b 900M -J STDOUT { "start": { "connected": [{ "socket": 5, "local_host": "10.11.11.3", "local_port": 52901, "remote_host": "10.11.11.2", "remote_port": 5202 }], "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 20:00:08 GMT", "timesecs": 1778270408 }, "connecting_to": { "host": "10.11.11.2", "port": 5202 }, "cookie": "3y47qpubhvl5iwu2n3t6iqmwaz47ugwzqemd", "target_bitrate": 900000000, "fq_rate": 0, "sock_bufsize": 0, "sndbuf_actual": 212992, "rcvbuf_actual": 212992, "test_start": { "protocol": "UDP", "num_streams": 1, "blksize": 1448, "omit": 0, "duration": 20, "bytes": 0, "blocks": 0, "reverse": 0, "tos": 0, "target_bitrate": 900000000, "bidir": 0, "fqrate": 0 } }, "intervals": [{ "streams": [{ "socket": 5, "start": 0, "end": 1.000109, "seconds": 1.0001089572906494, "bytes": 112418376, "bits_per_second": 899249028.26226139, "packets": 77637, "omitted": false, "sender": true }], "sum": { "start": 0, "end": 1.000109, "seconds": 1.0001089572906494, "bytes": 112418376, "bits_per_second": 899249028.26226139, "packets": 77637, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 1.000109, "end": 2.000065, "seconds": 0.99995601177215576, "bytes": 112496568, "bits_per_second": 900012133.93881023, "packets": 77691, "omitted": false, "sender": true }], "sum": { "start": 1.000109, "end": 2.000065, "seconds": 0.99995601177215576, "bytes": 112496568, "bits_per_second": 900012133.93881023, "packets": 77691, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 2.000065, "end": 3.000064, "seconds": 0.99999898672103882, "bytes": 112496568, "bits_per_second": 899973455.92416847, "packets": 77691, "omitted": false, "sender": true }], "sum": { "start": 2.000065, "end": 3.000064, "seconds": 0.99999898672103882, "bytes": 112496568, "bits_per_second": 899973455.92416847, "packets": 77691, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 3.000064, "end": 4.000066, "seconds": 1.0000020265579224, "bytes": 112508152, "bits_per_second": 900063391.96940243, "packets": 77699, "omitted": false, "sender": true }], "sum": { "start": 3.000064, "end": 4.000066, "seconds": 1.0000020265579224, "bytes": 112508152, "bits_per_second": 900063391.96940243, "packets": 77699, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 4.000066, "end": 5.000103, "seconds": 1.0000369548797607, "bytes": 112498016, "bits_per_second": 899950870.423793, "packets": 77692, "omitted": false, "sender": true }], "sum": { "start": 4.000066, "end": 5.000103, "seconds": 1.0000369548797607, "bytes": 112498016, "bits_per_second": 899950870.423793, "packets": 77692, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 5.000103, "end": 6.000096, "seconds": 0.99999302625656128, "bytes": 112500912, "bits_per_second": 900013572.46374571, "packets": 77694, "omitted": false, "sender": true }], "sum": { "start": 5.000103, "end": 6.000096, "seconds": 0.99999302625656128, "bytes": 112500912, "bits_per_second": 900013572.46374571, "packets": 77694, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 6.000096, "end": 7.000097, "seconds": 1.0000009536743164, "bytes": 112500912, "bits_per_second": 900006437.686976, "packets": 77694, "omitted": false, "sender": true }], "sum": { "start": 6.000096, "end": 7.000097, "seconds": 1.0000009536743164, "bytes": 112500912, "bits_per_second": 900006437.686976, "packets": 77694, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 7.000097, "end": 8.000097, "seconds": 1, "bytes": 112496568, "bits_per_second": 899972544, "packets": 77691, "omitted": false, "sender": true }], "sum": { "start": 7.000097, "end": 8.000097, "seconds": 1, "bytes": 112496568, "bits_per_second": 899972544, "packets": 77691, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 8.000097, "end": 9.000108, "seconds": 1.0000109672546387, "bytes": 112500912, "bits_per_second": 899997425.49906039, "packets": 77694, "omitted": false, "sender": true }], "sum": { "start": 8.000097, "end": 9.000108, "seconds": 1.0000109672546387, "bytes": 112500912, "bits_per_second": 899997425.49906039, "packets": 77694, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 9.000108, "end": 10.000115, "seconds": 1.0000070333480835, "bytes": 112498016, "bits_per_second": 899977798.14287829, "packets": 77692, "omitted": false, "sender": true }], "sum": { "start": 9.000108, "end": 10.000115, "seconds": 1.0000070333480835, "bytes": 112498016, "bits_per_second": 899977798.14287829, "packets": 77692, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 10.000115, "end": 11.00011, "seconds": 0.999994993209839, "bytes": 112503808, "bits_per_second": 900034970.286234, "packets": 77696, "omitted": false, "sender": true }], "sum": { "start": 10.000115, "end": 11.00011, "seconds": 0.999994993209839, "bytes": 112503808, "bits_per_second": 900034970.286234, "packets": 77696, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 11.00011, "end": 12.000107, "seconds": 0.99999701976776123, "bytes": 112492224, "bits_per_second": 899940474.03161371, "packets": 77688, "omitted": false, "sender": true }], "sum": { "start": 11.00011, "end": 12.000107, "seconds": 0.99999701976776123, "bytes": 112492224, "bits_per_second": 899940474.03161371, "packets": 77688, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 12.000107, "end": 13.000096, "seconds": 0.99998897314071655, "bytes": 112505256, "bits_per_second": 900051972.74645126, "packets": 77697, "omitted": false, "sender": true }], "sum": { "start": 12.000107, "end": 13.000096, "seconds": 0.99998897314071655, "bytes": 112505256, "bits_per_second": 900051972.74645126, "packets": 77697, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 13.000096, "end": 14.000098, "seconds": 1.0000020265579224, "bytes": 112500912, "bits_per_second": 900005472.08678043, "packets": 77694, "omitted": false, "sender": true }], "sum": { "start": 13.000096, "end": 14.000098, "seconds": 1.0000020265579224, "bytes": 112500912, "bits_per_second": 900005472.08678043, "packets": 77694, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 14.000098, "end": 15.000064, "seconds": 0.999966025352478, "bytes": 112492224, "bits_per_second": 899968368.10808742, "packets": 77688, "omitted": false, "sender": true }], "sum": { "start": 14.000098, "end": 15.000064, "seconds": 0.999966025352478, "bytes": 112492224, "bits_per_second": 899968368.10808742, "packets": 77688, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 15.000064, "end": 16.000156, "seconds": 1.0000920295715332, "bytes": 42197616, "bits_per_second": 337549863.43069738, "packets": 29143, "omitted": false, "sender": true }], "sum": { "start": 15.000064, "end": 16.000156, "seconds": 1.0000920295715332, "bytes": 42197616, "bits_per_second": 337549863.43069738, "packets": 29143, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 16.000156, "end": 17.000307, "seconds": 1.0001510381698608, "bytes": 0, "bits_per_second": 0, "packets": 0, "omitted": false, "sender": true }], "sum": { "start": 16.000156, "end": 17.000307, "seconds": 1.0001510381698608, "bytes": 0, "bits_per_second": 0, "packets": 0, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 17.000307, "end": 18.000166, "seconds": 0.99985897541046143, "bytes": 0, "bits_per_second": 0, "packets": 0, "omitted": false, "sender": true }], "sum": { "start": 17.000307, "end": 18.000166, "seconds": 0.99985897541046143, "bytes": 0, "bits_per_second": 0, "packets": 0, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 18.000166, "end": 19.000322, "seconds": 1.000156044960022, "bytes": 0, "bits_per_second": 0, "packets": 0, "omitted": false, "sender": true }], "sum": { "start": 18.000166, "end": 19.000322, "seconds": 1.000156044960022, "bytes": 0, "bits_per_second": 0, "packets": 0, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 19.000322, "end": 20.00131, "seconds": 1.0009880065917969, "bytes": 0, "bits_per_second": 0, "packets": 0, "omitted": false, "sender": true }], "sum": { "start": 19.000322, "end": 20.00131, "seconds": 1.0009880065917969, "bytes": 0, "bits_per_second": 0, "packets": 0, "omitted": false, "sender": true } }], "end": { "streams": [{ "udp": { "socket": 5, "start": 0, "end": 20.00131, "seconds": 20.00131, "bytes": 1729607040, "bits_per_second": 691797503.26353621, "jitter_ms": 329.1133542566476, "lost_packets": 66, "packets": 1194481, "lost_percent": 0.00552541229203311, "out_of_order": 0, "sender": true } }], "sum": { "start": 0, "end": 20.99144, "seconds": 20.99144, "bytes": 1729607040, "bits_per_second": 691797503.26353621, "jitter_ms": 329.1133542566476, "lost_packets": 66, "packets": 1194481, "lost_percent": 0.00552541229203311, "sender": true }, "sum_sent": { "start": 0, "end": 20.00131, "seconds": 20.00131, "bytes": 1729607040, "bits_per_second": 691797503.26353621, "jitter_ms": 0, "lost_packets": 0, "packets": 1194481, "lost_percent": 0, "sender": true }, "sum_received": { "start": 0, "end": 20.99144, "seconds": 20.99144, "bytes": 1729392736, "bits_per_second": 659084935.95484638, "jitter_ms": 329.1133542566476, "lost_packets": 66, "packets": 1194398, "lost_percent": 0.00552541229203311, "sender": false }, "cpu_utilization_percent": { "host_total": 78.105969105984855, "host_user": 67.3819807486567, "host_system": 10.724018346179808, "remote_total": 51.070003621947215, "remote_user": 14.661640434822315, "remote_system": 36.408372714804024 } } } STDERR