[Flent-users] Re: [tohojo/flent] support (re-)enabling netperf routing of UDP packets (#214)

[Jonas Smedegaard <notifications@github.com>]

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Sorry, I was too quick to conclude the exact cause of error messages I saw in the GUI.

When I saw those errors I cancelled the test, expecting no results at all - but trying more patiently to let it run its course I now see that output is generate (so something works) and those error messages are nicely emitted on console too (not only in GUI window), along with more details:
```
$ flent-gui 
Started Flent 1.3.2 using Python 3.9.1rc1.
Initialised matplotlib v3.3.2 on numpy v1.19.4.
GUI loaded. Running on PyQt v5.15.2.
Starting rrul test. Expected run time: 70 seconds.
WARNING: Program exited non-zero.
Runner class: NetperfDemoRunner
Command: /usr/bin/netperf -P 0 -v 0 -D -0.20 -4 -Y EF,EF -H XXXXX -p 12865 -t UDP_RR -l 70 -F /dev/urandom    -- -e 2  -H XXXXX -k THROUGHPUT,LOCAL_CONG_CONTROL,REMOTE_CONG_CONTROL,TRANSPORT_MSS,LOCAL_TRANSPORT_RETRANS,REMOTE_TRANSPORT_RETRANS,LOCAL_SOCKET_TOS,REMOTE_SOCKET_TOS,DIRECTION,ELAPSED_TIME,PROTOCOL,LOCAL_SEND_SIZE,LOCAL_RECV_SIZE,REMOTE_SEND_SIZE,REMOTE_RECV_SIZE,LOCAL_BYTES_SENT,LOCAL_BYTES_RECVD,REMOTE_BYTES_SENT,REMOTE_BYTES_RECVD  
Return code: 1
Stdout: send_data: data send error: Invalid argument (errno 22)

Stderr: netperf: send_omni: send_data failed: Invalid argument

WARNING: Command produced no valid data.
Runner class: NetperfDemoRunner
Command: /usr/bin/netperf -P 0 -v 0 -D -0.20 -4 -Y EF,EF -H XXXXX -p 12865 -t UDP_RR -l 70 -F /dev/urandom    -- -e 2  -H XXXXX -k THROUGHPUT,LOCAL_CONG_CONTROL,REMOTE_CONG_CONTROL,TRANSPORT_MSS,LOCAL_TRANSPORT_RETRANS,REMOTE_TRANSPORT_RETRANS,LOCAL_SOCKET_TOS,REMOTE_SOCKET_TOS,DIRECTION,ELAPSED_TIME,PROTOCOL,LOCAL_SEND_SIZE,LOCAL_RECV_SIZE,REMOTE_SEND_SIZE,REMOTE_RECV_SIZE,LOCAL_BYTES_SENT,LOCAL_BYTES_RECVD,REMOTE_BYTES_SENT,REMOTE_BYTES_RECVD  
Return code: 1
Stdout: send_data: data send error: Invalid argument (errno 22)

Stderr: netperf: send_omni: send_data failed: Invalid argument

WARNING: Program exited non-zero.
Runner class: NetperfDemoRunner
Command: /usr/bin/netperf -P 0 -v 0 -D -0.20 -4 -Y CS1,CS1 -H XXXXX -p 12865 -t UDP_RR -l 70 -F /dev/urandom    -- -e 2  -H XXXXX -k THROUGHPUT,LOCAL_CONG_CONTROL,REMOTE_CONG_CONTROL,TRANSPORT_MSS,LOCAL_TRANSPORT_RETRANS,REMOTE_TRANSPORT_RETRANS,LOCAL_SOCKET_TOS,REMOTE_SOCKET_TOS,DIRECTION,ELAPSED_TIME,PROTOCOL,LOCAL_SEND_SIZE,LOCAL_RECV_SIZE,REMOTE_SEND_SIZE,REMOTE_RECV_SIZE,LOCAL_BYTES_SENT,LOCAL_BYTES_RECVD,REMOTE_BYTES_SENT,REMOTE_BYTES_RECVD  
Return code: 1
Stdout: send_data: data send error: Invalid argument (errno 22)

Stderr: netperf: send_omni: send_data failed: Invalid argument

WARNING: Command produced no valid data.
Runner class: NetperfDemoRunner
Command: /usr/bin/netperf -P 0 -v 0 -D -0.20 -4 -Y CS1,CS1 -H XXXXX -p 12865 -t UDP_RR -l 70 -F /dev/urandom    -- -e 2  -H XXXXX -k THROUGHPUT,LOCAL_CONG_CONTROL,REMOTE_CONG_CONTROL,TRANSPORT_MSS,LOCAL_TRANSPORT_RETRANS,REMOTE_TRANSPORT_RETRANS,LOCAL_SOCKET_TOS,REMOTE_SOCKET_TOS,DIRECTION,ELAPSED_TIME,PROTOCOL,LOCAL_SEND_SIZE,LOCAL_RECV_SIZE,REMOTE_SEND_SIZE,REMOTE_RECV_SIZE,LOCAL_BYTES_SENT,LOCAL_BYTES_RECVD,REMOTE_BYTES_SENT,REMOTE_BYTES_RECVD  
Return code: 1
Stdout: send_data: data send error: Invalid argument (errno 22)

Stderr: netperf: send_omni: send_data failed: Invalid argument

WARNING: Program exited non-zero.
Runner class: NetperfDemoRunner
Command: /usr/bin/netperf -P 0 -v 0 -D -0.20 -4  -H XXXXX -p 12865 -t UDP_RR -l 70 -F /dev/urandom    -- -e 2  -H XXXXX -k THROUGHPUT,LOCAL_CONG_CONTROL,REMOTE_CONG_CONTROL,TRANSPORT_MSS,LOCAL_TRANSPORT_RETRANS,REMOTE_TRANSPORT_RETRANS,LOCAL_SOCKET_TOS,REMOTE_SOCKET_TOS,DIRECTION,ELAPSED_TIME,PROTOCOL,LOCAL_SEND_SIZE,LOCAL_RECV_SIZE,REMOTE_SEND_SIZE,REMOTE_RECV_SIZE,LOCAL_BYTES_SENT,LOCAL_BYTES_RECVD,REMOTE_BYTES_SENT,REMOTE_BYTES_RECVD  
Return code: 1
Stdout: send_data: data send error: Invalid argument (errno 22)

Stderr: netperf: send_omni: send_data failed: Invalid argument

WARNING: Command produced no valid data.
Runner class: NetperfDemoRunner
Command: /usr/bin/netperf -P 0 -v 0 -D -0.20 -4  -H XXXXX -p 12865 -t UDP_RR -l 70 -F /dev/urandom    -- -e 2  -H XXXXX -k THROUGHPUT,LOCAL_CONG_CONTROL,REMOTE_CONG_CONTROL,TRANSPORT_MSS,LOCAL_TRANSPORT_RETRANS,REMOTE_TRANSPORT_RETRANS,LOCAL_SOCKET_TOS,REMOTE_SOCKET_TOS,DIRECTION,ELAPSED_TIME,PROTOCOL,LOCAL_SEND_SIZE,LOCAL_RECV_SIZE,REMOTE_SEND_SIZE,REMOTE_RECV_SIZE,LOCAL_BYTES_SENT,LOCAL_BYTES_RECVD,REMOTE_BYTES_SENT,REMOTE_BYTES_RECVD  
Return code: 1
Stdout: send_data: data send error: Invalid argument (errno 22)

Stderr: netperf: send_omni: send_data failed: Invalid argument


Summary of rrul test run from 2020-12-04 20:04:49.807272

                             avg       median          # data pts
 Ping (ms) ICMP   :        40.35        41.60 ms              350
 Ping (ms) UDP BE : No data.
 Ping (ms) UDP BK : No data.
 Ping (ms) UDP EF : No data.
 Ping (ms) avg    :        40.35          N/A ms              350
 TCP download BE  :         0.82         0.77 Mbits/s         350
 TCP download BK  :         0.80         0.75 Mbits/s         350
 TCP download CS5 :         0.79         0.75 Mbits/s         350
 TCP download EF  :         0.67         0.63 Mbits/s         350
 TCP download avg :         0.77          N/A Mbits/s         350
 TCP download sum :         3.08          N/A Mbits/s         350
 TCP totals       :        94.35          N/A Mbits/s         350
 TCP upload BE    :        23.03        23.02 Mbits/s         350
 TCP upload BK    :        22.70        22.67 Mbits/s         350
 TCP upload CS5   :        22.87        22.91 Mbits/s         350
 TCP upload EF    :        22.67        23.21 Mbits/s         350
 TCP upload avg   :        22.82          N/A Mbits/s         350
 TCP upload sum   :        91.27          N/A Mbits/s         350
Data file written to /home/jonas/flent/rrul-2020-12-04T210449.807272.flent.gz.
```

Output graph for an RRUL test is missing the 3 UDP ping series, but all other series seem to have gotten through.  Perhaps this is no issue in flent after all, just my cloud provider blocking UDP ping...

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