This likely indicates that Trex failed to start properly, possibly pci address 
issue or other dpdk related issue.
Can you check/share the trex config and  trex log which are  located inside the 
container at:

/etc/trex_cfg.yaml
/tmp/trex.log

(you can use docker cp or simply docker exec <nfvbench> cat /tmp/trex.log)

Make sure you have your server is set properly to run dpdk (you need huge pages 
configured).

  Alec




From: "Li, Charlie" <charlie...@amd.com>
Date: Monday, August 31, 2020 at 3:07 PM
To: "Alec Hothan (ahothan)" <ahot...@cisco.com>, 
"opnfv-tech-discuss@lists.opnfv.org" <opnfv-tech-discuss@lists.opnfv.org>
Subject: RE: [opnfv-tech-discuss] #nfvbench - Example of run fails


[AMD Public Use]

Thanks Alec for your help.

Now I can start it but it fails to connect to the server.

$ nfvbench -c /tmp/nfvbench/nfvbench.cfg --rate 10kpps
2020-08-31 21:43:30,092 INFO Loading configuration file: 
/tmp/nfvbench/nfvbench.cfg
2020-08-31 21:43:30,101 INFO -c /tmp/nfvbench/nfvbench.cfg --rate 10kpps
2020-08-31 21:43:30,104 INFO Connecting to TRex (127.0.0.1)...
2020-08-31 21:43:33,175 INFO Starting TRex ...
2020-08-31 21:43:33,178 INFO nohup /bin/bash -c ./t-rex-64 -i -c 4 --iom 0 
--no-scapy-server --unbind-unused-ports --close-at-end  --vlan --hdrh 
--mbuf-factor 0.2 --cfg /etc/trex_cfg.yaml &> /tmp/trex.log & disown
2020-08-31 21:43:33,181 INFO TRex server is running...
nohup: ignoring input and appending output to 'nohup.out'
2020-08-31 21:43:37,189 INFO Retrying connection to TRex (*** [RPC] - Failed to 
get server response from tcp://127.0.0.1:4501)...
2020-08-31 21:43:41,196 INFO Retrying connection to TRex (*** [RPC] - Failed to 
get server response from tcp://127.0.0.1:4501)...
2020-08-31 21:43:45,203 INFO Retrying connection to TRex (*** [RPC] - Failed to 
get server response from tcp://127.0.0.1:4501)...

I tried to bind the devices to vfio-pci manually but it still cannot connect to 
the server.

Regards,
Charlie Li

From: Alec Hothan (ahothan) <ahot...@cisco.com>
Sent: Monday, August 31, 2020 1:45 PM
To: Li, Charlie <charlie...@amd.com>; opnfv-tech-discuss@lists.opnfv.org
Subject: Re: [opnfv-tech-discuss] #nfvbench - Example of run fails

[CAUTION: External Email]
Hi Charlie,

This is likely due to the file "/tmp/nfvbench/nfvbench.cfg" missing inside the 
container.
Can you check the following:

·         Check where you stored the nfvbench.cfg file on the host (the 
quickstart guide suggests to put the file under $HOME/nfvbench)

·         Check that that directory on host is mapped to /tmp/nfvbench in the 
container

To verify you can also try to cat that file from inside the container (docker 
exec <container name> cat /tmp/nfvbench/nfvbench.cfg)

For further interaction, you can continue on this email thread or you can join 
opnfv.slack.com #nfvbench if you prefer.


Thanks

Alec



From: 
<opnfv-tech-discuss@lists.opnfv.org<mailto:opnfv-tech-discuss@lists.opnfv.org>> 
on behalf of "Li, Charlie" <charlie...@amd.com<mailto:charlie...@amd.com>>
Date: Monday, August 31, 2020 at 9:59 AM
To: 
"opnfv-tech-discuss@lists.opnfv.org<mailto:opnfv-tech-discuss@lists.opnfv.org>" 
<opnfv-tech-discuss@lists.opnfv.org<mailto:opnfv-tech-discuss@lists.opnfv.org>>
Subject: [opnfv-tech-discuss] #nfvbench - Example of run fails


[AMD Public Use]

Hello,

I am new to NFVbench and is following the link below to get started
https://opnfv-nfvbench.readthedocs.io/en/latest/testing/user/userguide/quickstart_docker.html<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fopnfv-nfvbench.readthedocs.io%2Fen%2Flatest%2Ftesting%2Fuser%2Fuserguide%2Fquickstart_docker.html&data=02%7C01%7CCharlie.Li%40amd.com%7C800cb9821b534c2bca7c08d84dde0318%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637344963677109059&sdata=gxmMMAgWOXfByQ8tGE4o%2FSYtDWB4A0PllGM8L4nblnw%3D&reserved=0>

The NFVbench container is started successfully

$ nfvbench --version
4.3.1.dev4

But when I try the example of run, it fails

$ nfvbench -c /tmp/nfvbench/nfvbench.cfg --rate 10kpps
2020-08-27 20:10:45,424 INFO Loading configuration string: 
/tmp/nfvbench/nfvbench.cfg
2020-08-27 20:10:45,425 ERROR String /tmp/nfvbench/nfvbench.cfg is not well 
formatted. Please verify your yaml/json string. If string is a file path, file 
was not found. Please use correct path and verify it is visible to container if 
you run nfvbench in container.
2020-08-27 20:10:45,425 ERROR {'status': 'ERROR', 'error_message': 'Traceback 
(most recent call last):\n  File "/nfvbench/nfvbench/config.py", line 46, in 
config_loads\n    cfg = AttrDict(yaml.safe_load(cfg_text))\n  File 
"/usr/local/lib/python3.6/dist-packages/attrdict/dictionary.py", line 17, in 
__init__\n    super(AttrDict, self).__init__(*args, **kwargs)\nValueError: 
dictionary update sequence element #0 has length 1; 2 is required\n\nDuring 
handling of the above exception, another exception occurred:\n\nTraceback (most 
recent call last):\n  File "/nfvbench/nfvbench/nfvbench.py", line 611, in 
main\n    config = config_loads(opts.config, config, whitelist_keys)\n  File 
"/nfvbench/nfvbench/config.py", line 55, in config_loads\n    raise 
Exception(e)\nException: dictionary update sequence element #0 has length 1; 2 
is required\n'}
dictionary update sequence element #0 has length 1; 2 is required

The /tmp/nfvbench/nfvbench.cfg is cut and paste (OpenStack is not used and only 
PCIe addresses are modified)
traffic_generator:
    generator_profile:
        - name: trex-local
          tool: TRex
          ip: 127.0.0.1
          cores: 3
          software_mode: false
          interfaces:
            - port: 0
              pci: "04:00.0"
            - port: 1
              pci: "04:00.1"
          intf_speed:

Any help is appreciated.

Regards,
Charlie Li

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