Bug/issue with "delta"

[RoostWeather]

Hello,

I have a potential bug with exporting "delta" to SQL. From previous posts I understand that "delta" doesn't come from the database, but rather is calculated based on values in memory which are wiped following a reboot.

However, I have noticed that occasionally after a reboot, delta continues to fail to be calculated even when sufficient time has passed and values should be stored in memory.

So for example, my meteobridge PRO2 has currently been up for 3 days

Screenshot 2024-01-14 113321.png (11.92 KiB) Viewed 21205 times

however the 24h delta has been reporting as NULL since this time.

Screenshot 2024-01-14 113400.png (26.55 KiB) Viewed 21205 times

Any ideas? Thanks very much.

[RoostWeather]

Anyone? Thanks

[Mattk]

What does your 24 hour delta expression look like?

[Mattk]

Have run a MBPro2 with Jan 4 firmware for just over 24 hours and noted no issues with delta24h, rebooted with no issues.

Are you using delta24h or delta24H?

[RoostWeather]

[th0temp-delta1h:NULL], [th0temp-delta24h:NULL]

Those are the expressions I am using. Unfortunately, it's not a consistently repeatable bug, so I think it will be hard to trace. I now circumvent it by recalculating the deltas from the temperatures, so it is not a problem for me anymore. However, I raise it in case anyone wants to look into it.

Thanks.

[Mattk]

Unable to replicate that either (using the NULL component)?

[admin]

This effect does show up sometimes, but I still have not fully understood why. My first digging into it for a whole day was not successful. Sorry, no near term fix to be expected.