[ 🇬🇧_🇺🇸 Check out the subtitles - we now edit them, ChatGPT+manually! You can also try KZread's auto-translation of them from English to your language; try it and share it with people interested in Postgres!]
Nikolay and Michael discuss the overhead of pg_stat_statements and pg_stat_kcache - mostly focusing on some interesting things Nikolay found while stress-testing some large spot instances up to and beyond 2m TPS(!)
Here are some links to things they mentioned:
* pg_stat_statements www.postgresql.org/docs/curre...
* pg_stat_kcache github.com/powa-team/pg_stat_...
* pg_stat_statements overhead estimate in pganalyze FAQs pganalyze.com/faq
* What is the performance impact of pg_stat_statements? (DBA Stack Exchange answer with several links) dba.stackexchange.com/questio...
* Towards Millions TPS (blog post by Alexander Korotkov) akorotkov.github.io/blog/2016...
* Postgres.ai blog post with links to benchmarks postgres.ai/blog/20240127-pos...
* postgresql_cluster github.com/vitabaks/postgresq...
* pg_wait_sampling github.com/postgrespro/pg_wai...
* pg_stat_kcache issue, discussion, and fast resolution github.com/powa-team/pg_stat_...
* log_statement_sample_rate postgresqlco.nf/doc/en/param/...
* auto_explain.sample_rate www.postgresql.org/docs/curre...
* pg_stat_statements performance penalty on Intel much higher than on AMD gitlab.com/postgres-ai/postgr...
~~~
What did you like or not like? What should we discuss next time? Let us know in the comments, or by tweeting us on @samokhvalov / samokhvalov and @michristofides / michristofides
~~~
Postgres FM is brought to you by:
- Nikolay Samokhvalov, founder of Postgres.ai postgres.ai/
- Michael Christofides, founder of pgMustard pgmustard.com/
~~~
This is the video version. Check out postgres.fm to find the audio-only podcast version, available wherever you get your podcasts.