Raspbian BullsEye is end of life at the end of August 2026 (2 weeks time as I write this). With the number of security issues being dug up by AI, doing nothing is a high risk strategy.
I decided to make the move to Ubuntu 26.04 on my RPi4 (giving a upgrade path going forward) and of course the latest weewx version (5.5.0). The biggest hurdle is that weewx doesn't break, so not touched it for years and I have forgotten everything. Great documentation and the Wiki are the saving graces. On BullsEye I was running a very early (beta) release of weewx 5.0 using the old database schema and just using the standard Seasons Skin, I realised I had a serious performance issue after the upgrade: Before: user.log.1:Aug 8 23:25:21 rpi4 weewx[965] INFO weewx.imagegenerator: Generated 10 images for report SeasonsReport in 0.74 seconds user.log.1:Aug 8 23:30:21 rpi4 weewx[965] INFO weewx.cheetahgenerator: Generated 8 files for report SeasonsReport in 2.28 seconds After: 026-08-14T14:37:47.234310+00:00 rpi4 weewxd[5648]: INFO weewx.cheetahgenerator: Generated 8 files for report SeasonsReport in 144.66 seconds 2026-08-14T14:43:52.117916+00:00 rpi4 weewxd[5648]: INFO weewx.imagegenerator: Generated 10 images for report SeasonsReport in 364.88 seconds so 4 seconds to write the reports before, 500 seconds after, with 100% CPU usage. Disappointing. Reading between the lines more use is being made of the extended database schema, causing a large overhead if still using the old schema. So I followed the Wiki: https://github.com/weewx/weewx/wiki/Switching-to-the-new-wview_extended-schema This solved the performance issues: 2026-08-14T18:40:28.340408+00:00 rpi4 weewxd[7306]: INFO weewx.cheetahgenerator: Generated 8 files for report SeasonsReport in 5.37 seconds 2026-08-14T18:40:29.342990+00:00 rpi4 weewxd[7306]: INFO weewx.imagegenerator: Generated 10 images for report SeasonsReport in 1.00 seconds This is perfectly acceptable performance. The downside is my database when backed up is now 1.4GB (95MB gzipped) - basically double the size from before. My backup strategy has been to use google cloud (via rclone) but I was getting bandwidth limit errors before this increase of size. Still need to work out how to fix this. Hope this helps anyone else doing something similar Cheers Bob -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/weewx-user/430e8248-f7a5-401d-8fb1-d3807c2baed5n%40googlegroups.com.
