$ 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": 35492, "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 20:15:09 GMT", "timesecs": 1778271309 }, "connecting_to": { "host": "10.11.11.2", "port": 5202 }, "cookie": "4k7tljjs6iliv4ztcqosuvuu2zp3sldxgaib", "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": 1.000063, "seconds": 1.0000629425048828, "bytes": 112411136, "bits_per_second": 899232488.05472982, "packets": 77632, "omitted": false, "sender": true }], "sum": { "start": 0, "end": 1.000063, "seconds": 1.0000629425048828, "bytes": 112411136, "bits_per_second": 899232488.05472982, "packets": 77632, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 1.000063, "end": 2.000062, "seconds": 0.99999898672103882, "bytes": 112500912, "bits_per_second": 900008207.959382, "packets": 77694, "omitted": false, "sender": true }], "sum": { "start": 1.000063, "end": 2.000062, "seconds": 0.99999898672103882, "bytes": 112500912, "bits_per_second": 900008207.959382, "packets": 77694, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 2.000062, "end": 3.000062, "seconds": 1, "bytes": 112503808, "bits_per_second": 900030464, "packets": 77696, "omitted": false, "sender": true }], "sum": { "start": 2.000062, "end": 3.000062, "seconds": 1, "bytes": 112503808, "bits_per_second": 900030464, "packets": 77696, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 3.000062, "end": 4.000061, "seconds": 0.99999898672103882, "bytes": 112496568, "bits_per_second": 899973455.92416847, "packets": 77691, "omitted": false, "sender": true }], "sum": { "start": 3.000062, "end": 4.000061, "seconds": 0.99999898672103882, "bytes": 112496568, "bits_per_second": 899973455.92416847, "packets": 77691, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 4.000061, "end": 5.000087, "seconds": 1.0000259876251221, "bytes": 112499464, "bits_per_second": 899972323.85662735, "packets": 77693, "omitted": false, "sender": true }], "sum": { "start": 4.000061, "end": 5.000087, "seconds": 1.0000259876251221, "bytes": 112499464, "bits_per_second": 899972323.85662735, "packets": 77693, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 5.000087, "end": 6.000062, "seconds": 0.999975025653839, "bytes": 112500912, "bits_per_second": 900029773.6551224, "packets": 77694, "omitted": false, "sender": true }], "sum": { "start": 5.000087, "end": 6.000062, "seconds": 0.999975025653839, "bytes": 112500912, "bits_per_second": 900029773.6551224, "packets": 77694, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 6.000062, "end": 7.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true }], "sum": { "start": 6.000062, "end": 7.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 7.000062, "end": 8.000062, "seconds": 1, "bytes": 112500912, "bits_per_second": 900007296, "packets": 77694, "omitted": false, "sender": true }], "sum": { "start": 7.000062, "end": 8.000062, "seconds": 1, "bytes": 112500912, "bits_per_second": 900007296, "packets": 77694, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 8.000062, "end": 9.000062, "seconds": 1, "bytes": 112502360, "bits_per_second": 900018880, "packets": 77695, "omitted": false, "sender": true }], "sum": { "start": 8.000062, "end": 9.000062, "seconds": 1, "bytes": 112502360, "bits_per_second": 900018880, "packets": 77695, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 9.000062, "end": 10.000062, "seconds": 1, "bytes": 112498016, "bits_per_second": 899984128, "packets": 77692, "omitted": false, "sender": true }], "sum": { "start": 9.000062, "end": 10.000062, "seconds": 1, "bytes": 112498016, "bits_per_second": 899984128, "packets": 77692, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 10.000062, "end": 11.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true }], "sum": { "start": 10.000062, "end": 11.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 11.000062, "end": 12.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true }], "sum": { "start": 11.000062, "end": 12.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 12.000062, "end": 13.000062, "seconds": 1, "bytes": 112500912, "bits_per_second": 900007296, "packets": 77694, "omitted": false, "sender": true }], "sum": { "start": 12.000062, "end": 13.000062, "seconds": 1, "bytes": 112500912, "bits_per_second": 900007296, "packets": 77694, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 13.000062, "end": 14.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true }], "sum": { "start": 13.000062, "end": 14.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 14.000062, "end": 15.000062, "seconds": 1, "bytes": 112500912, "bits_per_second": 900007296, "packets": 77694, "omitted": false, "sender": true }], "sum": { "start": 14.000062, "end": 15.000062, "seconds": 1, "bytes": 112500912, "bits_per_second": 900007296, "packets": 77694, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 15.000062, "end": 16.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true }], "sum": { "start": 15.000062, "end": 16.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 16.000062, "end": 17.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true }], "sum": { "start": 16.000062, "end": 17.000062, "seconds": 1, "bytes": 112499464, "bits_per_second": 899995712, "packets": 77693, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 17.000062, "end": 18.000061, "seconds": 0.99999898672103882, "bytes": 112502360, "bits_per_second": 900019791.97112, "packets": 77695, "omitted": false, "sender": true }], "sum": { "start": 17.000062, "end": 18.000061, "seconds": 0.99999898672103882, "bytes": 112502360, "bits_per_second": 900019791.97112, "packets": 77695, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 18.000061, "end": 19.000061, "seconds": 1, "bytes": 112498016, "bits_per_second": 899984128, "packets": 77692, "omitted": false, "sender": true }], "sum": { "start": 18.000061, "end": 19.000061, "seconds": 1, "bytes": 112498016, "bits_per_second": 899984128, "packets": 77692, "omitted": false, "sender": true } }, { "streams": [{ "socket": 5, "start": 19.000061, "end": 20.000294, "seconds": 1.0002330541610718, "bytes": 112499464, "bits_per_second": 899786013.125567, "packets": 77693, "omitted": false, "sender": true }], "sum": { "start": 19.000061, "end": 20.000294, "seconds": 1.0002330541610718, "bytes": 112499464, "bits_per_second": 899786013.125567, "packets": 77693, "omitted": false, "sender": true } }], "end": { "streams": [{ "udp": { "socket": 5, "start": 0, "end": 20.000294, "seconds": 20.000294, "bytes": 2249912536, "bits_per_second": 899951785.108759, "jitter_ms": 0.010443516671235937, "lost_packets": 0, "packets": 1553807, "lost_percent": 0, "out_of_order": 0, "sender": true } }], "sum": { "start": 0, "end": 20.000788, "seconds": 20.000788, "bytes": 2249912536, "bits_per_second": 899951785.108759, "jitter_ms": 0.010443516671235937, "lost_packets": 0, "packets": 1553807, "lost_percent": 0, "sender": true }, "sum_sent": { "start": 0, "end": 20.000294, "seconds": 20.000294, "bytes": 2249912536, "bits_per_second": 899951785.108759, "jitter_ms": 0, "lost_packets": 0, "packets": 1553807, "lost_percent": 0, "sender": true }, "sum_received": { "start": 0, "end": 20.000788, "seconds": 20.000788, "bytes": 2249912536, "bits_per_second": 899929557.17544734, "jitter_ms": 0.010443516671235937, "lost_packets": 0, "packets": 1553807, "lost_percent": 0, "sender": false }, "cpu_utilization_percent": { "host_total": 100.82840853182647, "host_user": 100.8090657842894, "host_system": 0.01932274986577813, "remote_total": 65.938203455287123, "remote_user": 17.157610532804469, "remote_system": 48.780577923102882 } } } STDERR