Upgrade to 2024.5.1 : High memory and CPU usage

[jymorel]

The problem

HAOS. RPI4 8 Gb. After upgrade from 2024.4.4 to 2024.5.1, I see a significant increase of memory and cpu usage.
(Memory : 10 -->25%, CPU 25 --> 50).
Downgrading to 2024.4.4 solved the issue.
2024.4.4:

2024.5.1:

What version of Home Assistant Core has the issue?

2024.5.1

What was the last working version of Home Assistant Core?

2024.4.4

What type of installation are you running?

Home Assistant OS

Integration causing the issue

No response

Link to integration documentation on our website

No response

Diagnostics information

No response

Example YAML snippet

No response

Anything in the logs that might be useful for us?

No response

Additional information

No response

[bdraco]

Please follow the instructions at https://community.home-assistant.io/t/2024-5-tracking-down-instability-issues-caused-by-integrations/724441 and post a callgrind file

[jymorel]

so I have installed again version 2024.5.1yesterday evening at about 9:00pm. You will find attached the history of CPU and memory usage. And a callgrind file. Thank you

callgrind.out.1715013163860053.txt

[bdraco]

Looks like a run-away template

[bdraco]

Please follow the instructions at https://community.home-assistant.io/t/2024-5-tracking-down-instability-issues-caused-by-integrations/724441 to identify it

[jymorel]

Idid that and I looked at the log. I found 2 templates used in sensors for getting lists of last seen devices and unavailable devices with more than 100000 renders ...
But strangely, cpu and memory usage decreased significantly and returned to normal after installing 2024.5.2...? Seems to be stable now.

[jymorel]

fixed by

upgrade to 2024.5.2.

[bdraco]

I'm not 100% sure that this problem is fixed, as there wasn't anything specifically for templates in 2024.5.2. Perhaps it was the statistics fix? Do you use the statistics integration?

If you send another callgrind file. I'll also take a look and see if there's anything obvious going on that might cause the problem to reoccur.

[jymorel]

No I don’t use the statistics integration. Only 1 history_stats sensor for testing.
Ok attached a new callgrind file.
FYI, not a best practise for testing, but I installed go2rtc and alexa media player updates at the same time as HA 2024.5.2 update …
callgrind.out.1715104561015525.txt

[issue-triage-workflows]

There hasn't been any activity on this issue recently. Due to the high number of incoming GitHub notifications, we have to clean some of the old issues, as many of them have already been resolved with the latest updates.
Please make sure to update to the latest Home Assistant version and check if that solves the issue. Let us know if that works for you by adding a comment 👍
This issue has now been marked as stale and will be closed if no further activity occurs. Thank you for your contributions.

[bdraco]

It does look like you still have a lot of template renders

[bdraco]

https://community.home-assistant.io/t/2024-5-tracking-down-instability-issues-caused-by-integrations/724441

See

Finding a run-away template