Web UI Stops Working

[jaxpr3394]

After ~30 minutes of the web UI working, it will stop, and Bjorn will also stop updating the e-ink display. Monitoring the logs, I see a python error:

ERROR - Unexpected error: [Errno 24] Too many open files: '/home/bjorn/Bjorn/web/screen.png'

The workaround here is to stop and start the Bjorn service every ~30 minutes. I noticed in both display.py and utils.py, you are opening screen.png, but I never see a close() call. I added that call to both of those files, but it did not alleviate the issue, so I figured I would open an issue to get your thoughts.

[jaxpr3394]

Looks like the latest error in the web UI was:

{"status": "error", "message": "[Errno 24] Too many open files: '/home/bjorn/Bjorn/data/logs/temp_log.txt'"}

And cat temp_log.txt gives the the latest entries as:

==> /home/bjorn/Bjorn/data/logs/webapp.py.log <==
2024-11-11 22:44:33 - webapp.py - ERROR - Unexpected error: [Errno 24] Too many open files: '/home/bjorn/Bjorn/web/screen.png'

[infinition]

Yes, i am aware about this, unfortunately. On README i said i was trying to solve File descriptor limit.

I literrally spent weeks tweaking everything to solve this error.

Can you tell me :

sudo vi /etc/systemd/system.conf and sudo vi /etc/systemd/user.conf

DefaultLimitNOFILE=65535  #should be uncommented.

And can you ensure to have these 6 lines at the end of : sudo vi /etc/security/limits.conf

#End of file
root soft nofile 65535
root hard nofile 65535
bjorn soft nofile 65535
bjorn hard nofile 65535
* soft nofile 65535
* hard nofile 65535

Then

sudo sysctl -p sudo systemctl daemon-reload sudo reboot

Thanks

[jbohack]

@infinition I noticed this issue as well and did confirm those limits were applied with ulimit -n. It looks like this may be related to an error within scan_with_semaphore that causes resource exhaustion after erroring. I've been trying to debug this, without luck so far. However, feel free to use this as a reference to hopefully help resolve the issue. I will continue to look as well.

[infinition]

Thanks for your feedback.

I had a strange value, due to the autoinstall script, can you confirme me that you have this line under :

sudo vi /etc/systemd/system.conf

DefaultLimitNOFILE=65535  #should be uncommented.

Concerning the scan_with_semaphore , the thing is i completely tried to run Bjorn without the scanner (with scan_with_semaphore thing) and i had this file descriptor limit error. I think it may be related to the fact that i use screenshot of bjorn screen to display it live(with a delay) on the webpage . I keep working hard on it.

[jbohack]

Thanks for your feedback.

I had a strange value, due to the autoinstall script, can you confirme me that you have this line under :

sudo vi /etc/systemd/system.conf

DefaultLimitNOFILE=65535  #should be uncommented.

Concerning the scan_with_semaphore , the thing is i completely tried to run Bjorn without the scanner (with scan_with_semaphore thing) and i had this file descriptor limit error. I think it may be related to the fact that i use screenshot of bjorn screen to display it live(with a delay) on the webpage . I keep working hard on it.

Mine is currently set to DefaultLimitNOFILE=655351024:524288. Sounds like that thread issue may just be a side-effect of out of resources if that is the case.

[jaxpr3394]

Just catching up here. I implemented the proposed solution and it seems to be fine so far. I have had it running for ~45m, which is longer than it generally runs. I will update you again in a bit.

[infinition]

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