openplotter-notifications consumes all memory

[gordan]

Hi,

  My RPi-5 runs out of memory with the following processes using all the memory until at 90% of memory is used and monit reboots the machine. Then it repeats…

  The following processes are using up the memory:
- openplotter-not… Not sure yet which processes these are bcs the string gets truncated
- wf-panel-pi

  Will report more but would appreciate some specific instructions on what to check.

Best regards, Gordan

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See the memory consumption of the processes I mentioned.

Note that:
- scale is logarithmic 
- memory consumption of wf-panel-pi goes down only when rebooting

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Btw, trying to be more precise defining the process in collectd but I get error: “processes plugin: this platform has a 15 character limit to process names. The `Process "openplotter-notifications-visual"' option will not work as expected.”

Would be probably wise to shorten the names of the processes.

[Sailoog]

You probably have a data input generating massive notifications with "visual" method enabled and triggering multiple notifications windows. this was fixed on latest versions so make sure you are running latest versions of openplotter apps and system packages and check the signal k data browser to find the notifications and the generator. Use the "rescue" mode if you system is currently unusable: https://openplotter.readthedocs.io/4.x.x...tml#rescue

[gordan]

Thanks! I have version 4.5.0 and I would say a few (less than 10) notifications. Also, everything (system, openplotter) was updated less than a month ago.

[Sailoog]

where the notiifcations come from? you may have few notifications but updated very often. I would disable any data input one by one until you found the offending data source. Specially check any NMEA 2000 input.

[gordan]

This is a screenshot of the 4 notifications and corresponding memory consumption.
There’s 2 hours of difference between the two diagrams.
The events are roughly:
- 14:55: Raymarine devices switched on, resulting in 3 notifications and openplotter-not memory consumption jumps from <32MB to >265MB
- 18:40: uninstall and reinstall of notifications
- 18:40+:  after reinstall, there are 4 notifications (additional one after Raymarine was switched off) and memory consumption of process jumps to even higher level

Do I get it right that there really are just 4 notifications?
Is the memory consumption as expected?