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[SOLVED] Postgres using a lot of CPU since update (retrolemmy.com)

submitted 4 months ago* (last edited 4 months ago) by DosDude@retrolemmy.com to c/lemmy_support@lemmy.ml

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EDIT: It seems to have been fixed thanks to @graycube@lemmy.world. Running analyze verbose; in postgres.

After updating to 0.19.5 from 0.19.3 my postgres is often using up 500%+ of CPU according to docker stats and often going to 100% CPU on most cores according to htop. Also noticed in the uptime monitor:

htop shows one of the 5 postgres processes constantly on UPDATE. I think this might be part of the problem.

I'm not comfortable with postgres and am honestly completely in the dark how or where to mitigate or even pinpoint this issue.

Any help would be appreciated.

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[–] DosDude@retrolemmy.com 2 points 4 months ago

It thankfully seems to have been fixed thanks to @graycube@lemmy.world. Running analyze verbose; in postgres.

The pgautoupgrade was added for the new version because this deployment is an all-in-one solution for running lemmy. And upgrading the databases turned out to be quite the effort until some user pointed the maintainer towards pgautoupgrade here.

I tried running lemmy before I found out about this, but this just makes it so much more convenient to run.