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Network_usage issue

I have installed a 12 node Vertica cluster. Vertica DB is working fine. When I check in network_usages table , it is showing details of only 1 node, not showing the details of all 12 nodes. Moreover the usages are showing zero. What might be the reason for the same?

Answers

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    Jim_KnicelyJim_Knicely - Select Field - Administrator
    edited January 2020

    Can you post the reslts of this query?

    SELECT node_name, MAX(sysdate) today, MIN(start_time) start_time_min, MAX(start_time), MAX(tx_kbytes_per_sec) tx_kbytes_per_sec_max, MAX(rx_kbytes_per_sec) rx_kbytes_per_sec_max FROM network_usage GROUP BY 1 ORDER BY 1;
    

    Also, the NETWORK_USAGE system view gets its info from the Data Collector table DC_NETWORK_INFO_BY_MINUTE. Let's check if there is data in it:

    SELECT node_name, memory_buffer_size_kb, interval_time, disk_size_kb, current_memory_bytes, current_disk_bytes FROM data_collector WHERE table_name = 'dc_network_info_by_minute' ORDER BY 1;
    
  • Options

    Hi Jim,
    Executed the mentioned query.
    Query 1: SELECT node_name, MAX(sysdate) today, MIN(start_time) start_time_min, MAX(start_time), MAX(tx_kbytes_per_sec) tx_kbytes_per_sec_max, MAX(rx_kbytes_per_sec) rx_kbytes_per_sec_max FROM network_usage GROUP BY 1 ORDER BY 1;

    Output:(details of only one node is available)
    node today start_time_min MAX tx_kbytes_per_sec_ma rx_kbytes_per_sec_max
    v_aepproddb_node0010 2020-01-03 12:43:10 2020-01-01 14:10:00 2020-01-03 12:42:00 0.0 0.02

    Query 2: SELECT node_name, memory_buffer_size_kb, interval_time, disk_size_kb, current_memory_bytes, current_disk_bytes FROM data_collector WHERE table_name = 'dc_network_info_by_minute' ORDER BY 1;

    Output:
    node_name memory_buffer_size_kb interval_time disk_size_kb current_memory_bytes current_disk_bytes
    v_aepproddb_node0001 64 0 00:00:00.000000 25600 0 19675703
    v_aepproddb_node0002 64 0 00:00:00.000000 25600 0 25918738
    v_aepproddb_node0003 64 0 00:00:00.000000 25600 0 24289896
    v_aepproddb_node0004 64 0 00:00:00.000000 25600 0 24315376
    v_aepproddb_node0005 64 0 00:00:00.000000 25600 0 19995371
    v_aepproddb_node0006 64 0 00:00:00.000000 25600 0 19976949
    v_aepproddb_node0007 64 0 00:00:00.000000 25600 0 20004311
    v_aepproddb_node0008 64 0 00:00:00.000000 25600 0 19998272
    v_aepproddb_node0009 64 0 00:00:00.000000 25600 0 19995397
    v_aepproddb_node0010 64 0 00:00:00.000000 25600 0 19987665
    v_aepproddb_node0011 64 0 00:00:00.000000 25600 0 20068156
    v_aepproddb_node0012 64 0 00:00:00.000000 25600 0 19868470

  • Options

    The network_usage table is actually a system view, derived from the data that's in dc_network_info_by_minute. The fact that you're seeing data for only 1 node in network_usage, and NOT in dc_network_info_by_minute is quite bizarre. Here's the query that's used to build network_usage:
    SELECT
    node_name,
    round(min(start_time), 'MI') as start_time,
    round(max(end_time), 'MI') as end_time,
    round( ( (sum(tx_bytes_end_value - tx_bytes_start_value) / 1024) /
    (datediff('millisecond', min(start_time), max(end_time)) / 1000) )::float, 2) as tx_kbytes_per_sec,
    round( ( (sum(rx_bytes_end_value - rx_bytes_start_value) / 1024) /
    (datediff('millisecond', min(start_time), max(end_time)) / 1000) )::float, 2) as rx_kbytes_per_sec
    FROM v_internal.dc_network_info_by_minute
    WHERE interface_id like 'eth%'
    or interface_id like 'em%'
    or interface_id like 'p%p%'
    or interface_id like 'en%'
    GROUP BY node_name, round(start_time, 'MI') ;

    If you run that query directly, do you see data for other nodes? Otherwise, maybe there is something weird about the interface_id values, that's causing the view not to show data for those other nodes?

  • Options

    Found interface id value of rest 11 servers are different therefore it is getting filtered out.
    node interface_id
    v_aepproddb_node0001 ebs0 lo mgt0 pub0
    v_aepproddb_node0002 ebs0 lo mgt0 pub0
    v_aepproddb_node0003 ebs0 lo mgt0 pub0
    v_aepproddb_node0004 ebs0 lo mgt0 pub0
    v_aepproddb_node0005 ebs0 lo mgt0 pub0
    v_aepproddb_node0006 ebs0 lo mgt0 pub0
    v_aepproddb_node0007 ebs0 lo mgt0 pub0
    v_aepproddb_node0008 ebs0 lo mgt0 pub0
    v_aepproddb_node0009 ebs0 lo mgt0 pub0
    v_aepproddb_node0010 eth0 lo mgt0 pub0
    v_aepproddb_node0011 ebs0 lo mgt0 pub0
    v_aepproddb_node0012 ebs0 lo mgt0 pub0

  • Options

    Ok, so that explains the network_usage mystery. But why does only node 10 show an ethernet connection? How is your network configured on these nodes?

    I'm not sure what the source of this data is. What does a vnetperf on this cluster show?

  • Options

    Hi,
    Don't know why n/w team has done such configuration. Is there any future impact due to this?
    vnetperf o/p
    {"date":"2020-01-06_12:43:31,584","node results":
    [{"clock skew (us)": -1,"index": 0,"node":"10.94.166.101","rtt latency (us)": 49},{"clock skew (us)": 28,"index": 1,"node":"10.94.166.102","rtt latency (us)": 61},{"clock skew (us)": 28,"index": 2,"node":"10.94.166.103","rtt latency (us)": 100},{"clock skew (us)": 15,"index": 3,"node":"10.94.166.104","rtt latency (us)": 107},{"clock skew (us)": 47,"index": 4,"node":"10.94.166.105","rtt latency (us)": 102},{"clock skew (us)": 35,"index": 5,"node":"10.94.166.106","rtt latency (us)": 93},{"clock skew (us)": 22,"index": 6,"node":"10.94.166.107","rtt latency (us)": 105},{"clock skew (us)": 37,"index": 7,"node":"10.94.166.108","rtt latency (us)": 92},{"clock skew (us)": 19,"index": 8,"node":"10.94.166.109","rtt latency (us)": 96},{"clock skew (us)": 62,"index": 9,"node":"10.94.166.110","rtt latency (us)": 90},{"clock skew (us)": 13,"index": 10,"node":"10.94.166.111","rtt latency (us)": 100},{"clock skew (us)": 21,"index": 11,"node":"10.94.166.112","rtt latency (us)": 104}],"test":"latency"}
    {"date":"2020-01-06_12:43:31,590","node results":
    [{"mb/s (rec)": 30.5177,"mb/s (sent)": 30.5093,"bytes (rec)": 32011584,"bytes (sent)": 32002752,"duration (s)": 1.00036,"index": 0,"node":"10.94.166.101"},{"mb/s (rec)": 30.5191,"mb/s (sent)": 30.5093,"bytes (rec)": 32011584,"bytes (sent)": 32001280,"duration (s)": 1.00031,"index": 1,"node":"10.94.166.102"},{"mb/s (rec)": 30.5113,"mb/s (sent)": 30.5028,"bytes (rec)": 32011584,"bytes (sent)": 32002752,"duration (s)": 1.00057,"index": 2,"node":"10.94.166.103"},{"mb/s (rec)": 30.5181,"mb/s (sent)": 30.5083,"bytes (rec)": 32011584,"bytes (sent)": 32001280,"duration (s)": 1.00035,"index": 3,"node":"10.94.166.104"},{"mb/s (rec)": 30.5177,"mb/s (sent)": 30.5177,"bytes (rec)": 32001280,"bytes (sent)": 32001280,"duration (s)": 1.00004,"index": 4,"node":"10.94.166.105"},{"mb/s (rec)": 30.5127,"mb/s (sent)": 30.5155,"bytes (rec)": 31998336,"bytes (sent)": 32001280,"duration (s)": 1.00011,"index": 5,"node":"10.94.166.106"},{"mb/s (rec)": 30.5131,"mb/s (sent)": 30.5187,"bytes (rec)": 31995392,"bytes (sent)": 32001280,"duration (s)": 1,"index": 6,"node":"10.94.166.107"},{"mb/s (rec)": 30.5131,"mb/s (sent)": 30.5187,"bytes (rec)": 31995392,"bytes (sent)": 32001280,"duration (s)": 1,"index": 7,"node":"10.94.166.108"},{"mb/s (rec)": 30.5132,"mb/s (sent)": 30.5188,"bytes (rec)": 31995392,"bytes (sent)": 32001280,"duration (s)": 1,"index": 8,"node":"10.94.166.109"},{"mb/s (rec)": 30.5131,"mb/s (sent)": 30.5187,"bytes (rec)": 31995392,"bytes (sent)": 32001280,"duration (s)": 1,"index": 9,"node":"10.94.166.110"},{"mb/s (rec)": 30.5113,"mb/s (sent)": 30.5169,"bytes (rec)": 31995392,"bytes (sent)": 32001280,"duration (s)": 1.00006,"index": 10,"node":"10.94.166.111"},{"mb/s (rec)": 30.5131,"mb/s (sent)": 30.5187,"bytes (rec)": 31995392,"bytes (sent)": 32001280,"duration (s)": 1,"index": 11,"node":"10.94.166.112"},{"mb/s (rec)": 30.5144,"mb/s (sent)": 30.5144,"bytes (rec)": 32001525,"bytes (sent)": 32001525,"duration (s)": 1.00015,"node":"average"}],
    "rate limit (mb/s)": 32,"test":"udp-throughput"}
    {"date":"2020-01-06_12:43:32,598","node results": [{"mb/s (rec)": 61.005,"mb/s (sent)": 61.0008,"bytes (rec)": 64006976,"bytes (sent)": 64002560,"duration (s)": 1.0006,"index": 0,"node":"10.94.166.101"},{"mb/s (rec)": 61.0066,"mb/s (sent)": 61.0024,"bytes (rec)": 64006976,"bytes (sent)": 64002560,"duration (s)": 1.00058,"index": 1,"node":"10.94.166.102"},{"mb/s (rec)": 61.0074,"mb/s (sent)": 61.0032,"bytes (rec)": 64006976,"bytes (sent)": 64002560,"duration (s)": 1.00056,"index": 2,"node":"10.94.166.103"},{"mb/s (rec)": 61.0064,"mb/s (sent)": 61.0008,"bytes (rec)": 64006976,"bytes (sent)": 64001088,"duration (s)": 1.00058,"index": 3,"node":"10.94.166.104"},{"mb/s (rec)": 61.0056,"mb/s (sent)": 61,"bytes (rec)": 64006976,"bytes (sent)": 64001088,"duration (s)": 1.00059,"index": 4,"node":"10.94.166.105"},{"mb/s (rec)": 61.0054,"mb/s (sent)": 61.0012,"bytes (rec)": 64006976,"bytes (sent)": 64002560,"duration (s)": 1.0006,"index": 5,"node":"10.94.166.106"},{"mb/s (rec)": 61.0271,"mb/s (sent)": 61.0215,"bytes (rec)": 64006976,"bytes (sent)": 64001088,"duration (s)": 1.00024,"index": 6,"node":"10.94.166.107"},{"mb/s (rec)": 61.0322,"mb/s (sent)": 61.0308,"bytes (rec)": 64002560,"bytes (sent)": 64001088,"duration (s)": 1.00009,"index": 7,"node":"10.94.166.108"},{"mb/s (rec)": 61.0281,"mb/s (sent)": 61.0323,"bytes (rec)": 63996672,"bytes (sent)": 64001088,"duration (s)": 1.00006,"index": 8,"node":"10.94.166.109"},{"mb/s (rec)": 61.0128,"mb/s (sent)": 61.0226,"bytes (rec)": 63990784,"bytes (sent)": 64001088,"duration (s)": 1.00022,"index": 9,"node":"10.94.166.110"},{"mb/s (rec)": 61.0148,"mb/s (sent)": 61.026,"bytes (rec)": 63990784,"bytes (sent)": 64002560,"duration (s)": 1.00019,"index": 10,"node":"10.94.166.111"},{"mb/s (rec)": 61.0264,"mb/s (sent)": 61.0362,"bytes (rec)": 63990784,"bytes (sent)": 64001088,"duration (s)": 1,"index": 11,"node":"10.94.166.112"},{"mb/s (rec)": 61.0148,"mb/s (sent)": 61.0148,"bytes (rec)": 64001701,"bytes (sent)": 64001701,"duration (s)": 1.00036,"node":"average"}],
    "rate limit (mb/s)": 64,"test":"udp-throughput"}

  • Options

    {"date":"2020-01-06_12:43:33,601","node results": [{"mb/s (rec)": 122.005,"mb/s (sent)": 121.993,"bytes (rec)": 128013952,"bytes (sent)": 128002176,"duration (s)": 1.00065,"index": 0,"node":"10.94.166.101"},{"mb/s (rec)": 121.976,"mb/s (sent)": 121.995,"bytes (rec)": 127981568,"bytes (sent)": 128002176,"duration (s)": 1.00063,"index": 1,"node":"10.94.166.102"},{"mb/s (rec)": 122.019,"mb/s (sent)": 122.01,"bytes (rec)": 128012480,"bytes (sent)": 128002176,"duration (s)": 1.00052,"index": 2,"node":"10.94.166.103"},{"mb/s (rec)": 122.013,"mb/s (sent)": 122.013,"bytes (rec)": 128002176,"bytes (sent)": 128002176,"duration (s)": 1.00049,"index": 3,"node":"10.94.166.104"},{"mb/s (rec)": 122.009,"mb/s (sent)": 122.014,"bytes (rec)": 127997760,"bytes (sent)": 128002176,"duration (s)": 1.00048,"index": 4,"node":"10.94.166.105"},{"mb/s (rec)": 121.846,"mb/s (sent)": 121.85,"bytes (rec)": 127997760,"bytes (sent)": 128002176,"duration (s)": 1.00182,"index": 5,"node":"10.94.166.106"},{"mb/s (rec)": 122.033,"mb/s (sent)": 122.037,"bytes (rec)": 127997760,"bytes (sent)": 128002176,"duration (s)": 1.00029,"index": 6,"node":"10.94.166.107"},{"mb/s (rec)": 122.054,"mb/s (sent)": 122.058,"bytes (rec)": 127997760,"bytes (sent)": 128002176,"duration (s)": 1.00012,"index": 7,"node":"10.94.166.108"},{"mb/s (rec)": 122.06,"mb/s (sent)": 122.063,"bytes (rec)": 127997760,"bytes (sent)": 128000704,"duration (s)": 1.00007,"index": 8,"node":"10.94.166.109"},{"mb/s (rec)": 122.055,"mb/s (sent)": 122.059,"bytes (rec)": 127997760,"bytes (sent)": 128002176,"duration (s)": 1.00011,"index": 9,"node":"10.94.166.110"},{"mb/s (rec)": 122.052,"mb/s (sent)": 122.057,"bytes (rec)": 127997760,"bytes (sent)": 128002176,"duration (s)": 1.00013,"index": 10,"node":"10.94.166.111"},{"mb/s (rec)": 122.041,"mb/s (sent)": 122.045,"bytes (rec)": 127997760,"bytes (sent)": 128002176,"duration (s)": 1.00022,"index": 11,"node":"10.94.166.112"},{"mb/s (rec)": 122.014,"mb/s (sent)": 122.016,"bytes (rec)": 127999354,"bytes (sent)": 128002053,"duration (s)": 1.00046,"node":"average"}],"rate limit (mb/s)": 128,"test":"udp-throughput"} {"date":"2020-01-06_12:43:34,605","node results": [{"mb/s (rec)": 241.074,"mb/s (sent)": 243.878,"bytes (rec)": 253057408,"bytes (sent)": 256001408,"duration (s)": 1.00108,"index": 0,"node":"10.94.166.101"},{"mb/s (rec)": 241.155,"mb/s (sent)": 243.96,"bytes (rec)": 253057408,"bytes (sent)": 256001408,"duration (s)": 1.00074,"index": 1,"node":"10.94.166.102"},{"mb/s (rec)": 241.161,"mb/s (sent)": 243.967,"bytes (rec)": 253057408,"bytes (sent)": 256001408,"duration (s)": 1.00072,"index": 2,"node":"10.94.166.103"},{"mb/s (rec)": 243.939,"mb/s (sent)": 213.009,"bytes (rec)": 255967552,"bytes (sent)": 223512896,"duration (s)": 1.0007,"index": 3,"node":"10.94.166.104"},{"mb/s (rec)": 241.169,"mb/s (sent)": 243.985,"bytes (rec)": 253047104,"bytes (sent)": 256001408,"duration (s)": 1.00065,"index": 4,"node":"10.94.166.105"},{"mb/s (rec)": 241.301,"mb/s (sent)": 244.121,"bytes (rec)": 253042688,"bytes (sent)": 255999936,"duration (s)": 1.00008,"index": 5,"node":"10.94.166.106"},{"mb/s (rec)": 241.26,"mb/s (sent)": 244.08,"bytes (rec)": 253042688,"bytes (sent)": 256001408,"duration (s)": 1.00025,"index": 6,"node":"10.94.166.107"},{"mb/s (rec)": 241.284,"mb/s (sent)": 244.105,"bytes (rec)": 253042688,"bytes (sent)": 256001408,"duration (s)": 1.00015,"index": 7,"node":"10.94.166.108"},{"mb/s (rec)": 241.249,"mb/s (sent)": 244.07,"bytes (rec)": 253042688,"bytes (sent)": 256001408,"duration (s)": 1.00029,"index": 8,"node":"10.94.166.109"},{"mb/s (rec)": 241.29,"mb/s (sent)": 244.112,"bytes (rec)": 253042688,"bytes (sent)": 256001408,"duration (s)": 1.00012,"index": 9,"node":"10.94.166.110"},{"mb/s (rec)": 241.301,"mb/s (sent)": 244.122,"bytes (rec)": 253042688,"bytes (sent)": 256001408,"duration (s)": 1.00008,"index": 10,"node":"10.94.166.111"},{"mb/s (rec)": 241.003,"mb/s (sent)": 244.081,"bytes (rec)": 252771840,"bytes (sent)": 255999936,"duration (s)": 1.00025,"index": 11,"node":"10.94.166.112"},{"mb/s (rec)": 241.432,"mb/s (sent)": 241.458,"bytes (rec)": 253267904,"bytes (sent)": 253293786,"duration (s)": 1.00043,"node":"average"}],
    "rate limit (mb/s)": 256,"test":"udp-throughput"}
    {"date":"2020-01-06_12:43:35,615","node results": [{"mb/s (rec)": 269.482,"mb/s (sent)": 299.184,"bytes (rec)": 282849216,"bytes (sent)": 314024704,"duration (s)": 1.00098,"index": 0,"node":"10.94.166.101"},{"mb/s (rec)": 271.952,"mb/s (sent)": 272.012,"bytes (rec)": 285441408,"bytes (sent)": 285504704,"duration (s)": 1.00098,"index": 1,"node":"10.94.166.102"},{"mb/s (rec)": 270.292,"mb/s (sent)": 290.299,"bytes (rec)": 283695616,"bytes (sent)": 304695168,"duration (s)": 1.00097,"index": 2,"node":"10.94.166.103"},{"mb/s (rec)": 278.266,"mb/s (sent)": 202.595,"bytes (rec)": 292063936,"bytes (sent)": 212640704,"duration (s)": 1.00096,"index": 3,"node":"10.94.166.104"},{"mb/s (rec)": 270.881,"mb/s (sent)": 272.348,"bytes (rec)": 285308928,"bytes (sent)": 286853056,"duration (s)": 1.00447,"index": 4,"node":"10.94.166.105"},{"mb/s (rec)": 270.872,"mb/s (sent)": 283.968,"bytes (rec)": 284297664,"bytes (sent)": 298041728,"duration (s)": 1.00094,"index": 5,"node":"10.94.166.106"},{"mb/s (rec)": 270.672,"mb/s (sent)": 288.001,"bytes (rec)": 283925248,"bytes (sent)": 302102976,"duration (s)": 1.00037,"index": 6,"node":"10.94.166.107"},{"mb/s (rec)": 273.774,"mb/s (sent)": 249.805,"bytes (rec)": 287207808,"bytes (sent)": 262063104,"duration (s)": 1.00047,"index": 7,"node":"10.94.166.108"},{"mb/s (rec)": 270.905,"mb/s (sent)": 285.203,"bytes (rec)": 284187264,"bytes (sent)": 299185472,"duration (s)": 1.00043,"index": 8,"node":"10.94.166.109"},{"mb/s (rec)": 271.298,"mb/s (sent)": 281.76,"bytes (rec)": 284518464,"bytes (sent)": 295490752,"duration (s)": 1.00015,"index": 9,"node":"10.94.166.110"},{"mb/s (rec)": 272.916,"mb/s (sent)": 261.856,"bytes (rec)": 286209792,"bytes (sent)": 274610432,"duration (s)": 1.00013,"index": 10,"node":"10.94.166.111"},{"mb/s (rec)": 271.592,"mb/s (sent)": 276.455,"bytes (rec)": 284967424,"bytes (sent)": 290069376,"duration (s)": 1.00064,"index": 11,"node":"10.94.166.112"},{"mb/s (rec)": 271.909,"mb/s (sent)": 271.957,"bytes (rec)": 285389397,"bytes (sent)": 285440181,"duration (s)": 1.00096,"node":"average"}],
    "rate limit (mb/s)": 512,"test":"udp-throughput"}

  • Options

    {"date":"2020-01-06_12:43:36,625","node results": [{"mb/s (rec)": 271.057,"mb/s (sent)": 288.572,"bytes (rec)": 284525824,"bytes (sent)": 302911104,"duration (s)": 1.00106,"index": 0,"node":"10.94.166.101"},{"mb/s (rec)": 273.145,"mb/s (sent)": 265.685,"bytes (rec)": 286707328,"bytes (sent)": 278876288,"duration (s)": 1.00103,"index": 1,"node":"10.94.166.102"},{"mb/s (rec)": 271.127,"mb/s (sent)": 287.979,"bytes (rec)": 284578816,"bytes (sent)": 302266368,"duration (s)": 1.00099,"index": 2,"node":"10.94.166.103"},{"mb/s (rec)": 276.263,"mb/s (sent)": 231.551,"bytes (rec)": 289961920,"bytes (sent)": 243033088,"duration (s)": 1.00096,"index": 3,"node":"10.94.166.104"},{"mb/s (rec)": 271.832,"mb/s (sent)": 277.117,"bytes (rec)": 285308928,"bytes (sent)": 290855424,"duration (s)": 1.00096,"index": 4,"node":"10.94.166.105"},{"mb/s (rec)": 272.476,"mb/s (sent)": 271.735,"bytes (rec)": 285865344,"bytes (sent)": 285088128,"duration (s)": 1.00054,"index": 5,"node":"10.94.166.106"},{"mb/s (rec)": 271.639,"mb/s (sent)": 283.592,"bytes (rec)": 285004224,"bytes (sent)": 297545664,"duration (s)": 1.0006,"index": 6,"node":"10.94.166.107"},{"mb/s (rec)": 274.695,"mb/s (sent)": 250.627,"bytes (rec)": 288152832,"bytes (sent)": 262905088,"duration (s)": 1.00039,"index": 7,"node":"10.94.166.108"},{"mb/s (rec)": 271.091,"mb/s (sent)": 289.149,"bytes (rec)": 284468416,"bytes (sent)": 303417472,"duration (s)": 1.00073,"index": 8,"node":"10.94.166.109"},{"mb/s (rec)": 271.991,"mb/s (sent)": 277.77,"bytes (rec)": 285538560,"bytes (sent)": 291604672,"duration (s)": 1.00117,"index": 9,"node":"10.94.166.110"},{"mb/s (rec)": 273.209,"mb/s (sent)": 266.886,"bytes (rec)": 286596928,"bytes (sent)": 279964096,"duration (s)": 1.0004,"index": 10,"node":"10.94.166.111"},{"mb/s (rec)": 271.984,"mb/s (sent)": 280.394,"bytes (rec)": 285307456,"bytes (sent)": 294129152,"duration (s)": 1.00039,"index": 11,"node":"10.94.166.112"},{"mb/s (rec)": 272.543,"mb/s (sent)": 272.588,"bytes (rec)": 286001381,"bytes (sent)": 286049712,"duration (s)": 1.00077,"node":"average"}],
    "rate limit (mb/s)": 640,"test":"udp-throughput"}
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  • Options

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  • Options

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