I’m trying to optimize a multi-docker Discourse instance for a forum with over 3M posts. Once loaded, Disourse is quite fast. Problem is that the first page load (or full F5 refresh) takes 4-5 seconds. There is one SQL query that is responsible for 3,9 of these 4 seconds. This is consistent and …

If this is an import, try backing up and restoring from backup, stats may be in a bad state

It’s after import from IPB. I’ll try that.

You can read more about it here [Beibei] How do I know if the statistics of a Postgres table are up to date? postgresql, statistics, analyzer, vacuum asked by Beibei on 08:17PM - 01 Aug 11 UTC

Slow (over 3 sec) SQL query

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TomekB (Tomek) 2017 年1 月 20 日 16:01 4

It helped, can you explain why this could be an issue?

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Slow (over 3 sec) SQL query

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