Common slow query reasons - help with a special log

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От Daniel Cristian Cruz
Тема Common slow query reasons - help with a special log
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Msg-id CACffM9E1d9bR=xdWYoAPF2Y2NMpfE4gpRQf6vjV3QXQ5SSSLbw@mail.gmail.com
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Ответы Re: Common slow query reasons - help with a special log  (Andreas Kretschmer <akretschmer@spamfence.net>)
Re: Common slow query reasons - help with a special log  (Tomas Vondra <tv@fuzzy.cz>)
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Hi all,

I'm trying to figure out some common slow queries running on the server, by analyzing the slow queries log.

I found debug_print_parse, debug_print_rewritten, debug_print_plan, which are too much verbose and logs all queries.

I was thinking in something like a simple explain analyze just for queries logged with log_min_duration_statement with the query too.

Is there a way to configure PostgreSQL to get this kind of information, maybe I'm missing something? Is it too hard to hack into sources and do it by hand? I never touched PostgreSQL sources.

I'm thinking to write a paper that needs this information for my postgraduate course. The focus of my work will be the log data, not PostgreSQL itself. If I succeed, maybe it can be a tool to help all of us.

Thank you,
--
Daniel Cristian Cruz
クルズ クリスチアン ダニエル

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