Platform information: Hardware: Rpi 3B+ OS: openhabian latest (as in time of writing) Java Runtime Environment: default version in openhabian openHAB version: 2.4 Issue of the topic: After month of running untouched, I decided to run update on openhabian on late July 2019, updating openhabian-c…

[image] WeirdlyChosen: possible cause, but not sure since config is changed months before become sluggish: openhab.log moved to /tmp/openhab.log /tmp is in RAM, so depending on how large your logs grew (and when) this is a potential explanation Did you actually apt-get upgrade or did you al…

Putting logs in RAM is exactly the reason of putting it on /tmp RAM is still in reasonable range, below 600MB while 500MB is used for Java and it stays like that after reboot until weeks later. However, even after reboot, OH still slow. I put logs on /tmp months before and it runs normally. Everyt…

[image] WeirdlyChosen: I put logs on /tmp months before and it runs normally. Everything changed after updating from repository RAM usage depends on many factors beyond just Java. And the world keeps on turning. Any OS or OH update means a potential change in resource usage. Solutions for a p…

I also started to have issues with heap space and I’m running openhabian on Intel NUC 16GB. Previously issues were connected to ipcamera binding and refreshing images from cameras, however I’ve turned it off and openhab still goes out of memory after 24hours. I’ve put 8GB for openhabian in /etc/defa…

[image] zacofunny: Try to modify /etc/default/openhab2 and increase default value of -xmx. That won’t help with his problem (sluggishness). If he was to hit the heap size limit (which is what you increase by using -Xmx) his OH would crash at that moment.

Understood. Does anybody have a working solution for monitoring heap size from openhab? Since this problem is usually not easy to be resolved quickly I would like to have a solution for restarting openhab itself when it’s getting close to the limit, do some statistics etc. I know that this is not a …

[image] zacofunny: Does anybody have a working solution for monitoring heap size from openhab? See Openhab filling up Memory and Swap - #90 by rlkoshak which should get you started.

I stopped logging openhab.log at all to test performance, however it looks like RAM is still consumed by cache. This is what I see on top command after few minutes restarting openhab service top - 01:52:42 up 2 days, 11:40, 1 user, load average: 1.00, 1.05, 1.06 Tasks: 110 total, 1 running, 65…

Your java is running at full speed (100%) for a longer time (load averages all >1). Every time you change (or just touch) files in items and rules directories, OH will process these, or even all rules (if you touch items files). This results in changes queuing up. That’s what I suspect is your probl…

That may be the case. I crammed all items in a file and all groups in separate file in order to reduce typo and to make me able to track which group contains what items in a spreadsheet. It takes less than 500 lines including comments. I do not touch items file for months, but I Will try to split i…