metrics_log.txt file not found

[Shivansh20128]

Hi, I have been using vegvisir for some time now for some experiments. But then it started breaking on my system. So, I made a fresh installation on a Ubuntu 22.04 PC having Python 3.10.12. I followed all the steps correctly, but still when I run vegvisir using the command "python -m vegvisir run paper_experiment_full.json", I get this error.

Vegvisir > Enter password to run sudo commands: Info > Running godashcl over tc-netem-cl against quic-go Info > TimeoutSensor detected client exit before timeout, halting timer. Ran for 1 seconds. Info > Test run duration: 0:00:02.409318 Traceback (most recent call last): File "/home/shivansh/root/vegvisir/./util/segmentGraph.py", line 39, in with open(logFile) as f: FileNotFoundError: [Errno 2] No such file or directory: '/home/shivansh/root/vegvisir/logs/cross_layer_paper/2023-11-10T_11-53-39/godashcl-bba2cl-double-bbb-2stc-netem-cl-paperquic-go/client/metrics_log.txt' Traceback (most recent call last): File "/home/shivansh/root/vegvisir/./util/segmentGraph.py", line 39, in with open(logFile) as f: FileNotFoundError: [Errno 2] No such file or directory: '/home/shivansh/root/vegvisir/logs/cross_layer_paper/2023-11-10T_11-53-39/godashcl-bba2cl-double-bbb-2stc-netem-cl-paperquic-go/client/metrics_log.txt' Traceback (most recent call last): File "/home/shivansh/root/vegvisir/./util/segmentGraph.py", line 39, in with open(logFile) as f: FileNotFoundError: [Errno 2] No such file or directory: '/home/shivansh/root/vegvisir/logs/cross_layer_paper/2023-11-10T_11-53-39/godashcl-bba2cl-double-bbb-2stc-netem-cl-paperquic-go/client/metrics_log.txt' Info > Vegvisir experiment finished. Total elapsed time 0:00:17.695305

Any reason why this might be happening? Thanks

[JorisHerbots]

This is not a bug/error in Vegvisir itself. The setup from https://github.com/EDM-Research/cross-that-boundary-mmsys23-nossdav causes the error.

Could you provide the details from the output.txtlog and your experiment JSON? These will provide us with more insights as to what might be failing. From the small log you posted, I can see that the client is exiting quickly, which indicates that it did not start up properly. This causes the errors about metrics_log.txt since this output file is never generated during an experiment due to the client not starting.

[Shivansh20128]

I just saw the output.txt file and noticed that the containers were unable to start due to permission issues. So I ran vegvisir with sudo privileges with the command "sudo python -m vegvisir run paper_experiment_full.json". So now the containers were able to start, but the error was still there.

Vegvisir > Enter password to run sudo commands: Info > Running godashcl over tc-netem-cl against quic-go Info > TimeoutSensor detected client exit before timeout, halting timer. Ran for 4 seconds. Info > Test run duration: 0:00:35.116946 Traceback (most recent call last): File "/home/shivansh/root/vegvisir/./util/segmentGraph.py", line 39, in with open(logFile) as f: FileNotFoundError: [Errno 2] No such file or directory: '/home/shivansh/root/vegvisir/logs/cross_layer_paper/2023-11-10T_18-54-34/godashcl-bba2cl-double-bbb-2stc-netem-cl-paperquic-go/client/metrics_log.txt' Traceback (most recent call last): File "/home/shivansh/root/vegvisir/./util/segmentGraph.py", line 39, in with open(logFile) as f: FileNotFoundError: [Errno 2] No such file or directory: '/home/shivansh/root/vegvisir/logs/cross_layer_paper/2023-11-10T_18-54-34/godashcl-bba2cl-double-bbb-2stc-netem-cl-paperquic-go/client/metrics_log.txt' Traceback (most recent call last): File "/home/shivansh/root/vegvisir/./util/segmentGraph.py", line 39, in with open(logFile) as f: FileNotFoundError: [Errno 2] No such file or directory: '/home/shivansh/root/vegvisir/logs/cross_layer_paper/2023-11-10T_18-54-34/godashcl-bba2cl-double-bbb-2stc-netem-cl-paperquic-go/client/metrics_log.txt' Error > ITU P.1203 step failed [Errno 2] No such file or directory: '/home/shivansh/root/vegvisir/logs/cross_layer_paper/2023-11-10T_18-54-34/godashcl-bba2cl-double-bbb-2stc-netem-cl-paperquic-go/client/files' Info > Vegvisir is waiting for 4 post-hook processor(s) to stop. If this message persists, perform CTRL + C Info > Vegvisir experiment finished. Total elapsed time 0:00:45.357102

I am adding the output.txt file from this run and the experiment JSON, too. Rest assured that I have not made any changes in the code, and this is a fresh installation. I have just reduced the number of tests in the experiment JSON. experiment.json output.txt

[JorisHerbots]

Running Vegvisir with sudo is an unsupported use case that might trigger undefined behavior. Please configure docker so it works without root privileges as detailed in the installation guide: https://docs.docker.com/engine/install/linux-postinstall/

Then, could you retry the experiment and see if the errors persist? From the output log, I can confirm that the goDASH client is starting but not streaming anything. Can you ensure the path /home/shivansh/root/datasets/BigBuckBunny/2sec/ exists and contains the correct dataset?

[Shivansh20128]

The dataset path was set wrong. Resolved now.