Re: PostgresSQL 9.5.21 very slow to connect and perform basic queries
bruno da silva <brunogiovs@gmail.com>
From: bruno da silva <brunogiovs@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: pgsql-performance@lists.postgresql.org
Date: 2022-08-02T17:02:41Z
Lists: pgsql-performance
Do you have a lot of especially long statements being tracked in the pg_stat_statements view?* well, the view was showing the query column null.* * but looking on pgss_query_texts.stat there are very large sql statements, of around ~ 400kb, multiple thousands. * Are there any other signs of distress in the postmaster log, like complaints about being unable to write pgss_query_texts.stat? *no, just complaints for reading it. * Thanks On Tue, Aug 2, 2022 at 11:59 AM Tom Lane <tgl@sss.pgh.pa.us> wrote: > bruno da silva <brunogiovs@gmail.com> writes: > > After more investigation, we found that pgss_query_texts.stat of a size > of > > 2.2GB. and this deployment has a 32bit pg. > > Hm ... we've heard one previous report of pg_stat_statements' query text > file getting unreasonably large, but it's not clear how that can come > to be. Do you have a lot of especially long statements being tracked > in the pg_stat_statements view? Are there any other signs of distress > in the postmaster log, like complaints about being unable to write > pgss_query_texts.stat? > > regards, tom lane > -- Bruno da Silva
Commits
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Be more wary about 32-bit integer overflow in pg_stat_statements.
- c67c2e2a2939 16.0 landed
- dd414bf4e047 10.22 landed
- 82ebc70d1c7f 15.0 landed
- 6b67db10c366 13.8 landed
- 6608a4305636 12.12 landed
- 17fd203b414e 14.5 landed
- 06f6a07ba465 11.17 landed