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System Busy / 504 error codes

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I migrated to eisy a few years ago, currently on eisy-UI beta 1.4.8. A few months ago--maybe it was when I first migrated to eisy-UI or maybe it's just coincidence--I noticed intermittent and significant latency in my programs and devices' status updates in eisy-UI, both Insteon and Z-Wave. The system not noticing a motion sensor was activated as I walked by, a lock was unlocked, or a door opened. A program not running on schedule.

In the past, this may have been due to programs looping, tying up the eisy. This would show up in the Admin Console program activity summary page, or in the logs and I would fix the program.

Now, with the eisy-UI and UD mobile on my phone I can see what's happening. eisy-UI shows the yellow banner "system busy". UD mobile will display a 504 error if I attempt to turn devices on/off or query them while the yellow banner is up.

As I'm writing this, I've got a system busy message for over 2 min 30 secs. The logs and event viewer aren't pointing to a cause. The programs summary sorted by last start time shows a gap in programs being run for 2 min 30 seconds.

I may have to submit a ticket but just wanted to see if anyone has any insights before I do.

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