Re: Multi-second pauses blocking even trivial activity

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От Jeff Janes
Тема Re: Multi-second pauses blocking even trivial activity
Дата
Msg-id CAMkU=1xqJgnEEnYCnVbQXZpYxLfw6PokXDR3A68THjqN-Fnqhw@mail.gmail.com
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Ответ на Multi-second pauses blocking even trivial activity  (Patrick Molgaard <draaglom@gmail.com>)
Ответы Re: Multi-second pauses blocking even trivial activity
Список pgsql-performance
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On Fri, Sep 7, 2018 at 8:00 AM Patrick Molgaard <draaglom@gmail.com> wrote:
Hi folks,

I've been seeing some curious behaviour on a postgres server I administer.

Intermittently (one or two times a week), all queries on that host are simultaneously blocked for extended periods (10s of seconds).

The blocked queries are trivial & not related to locking - I'm seeing slowlogs of the form:

`LOG: duration: 22627.299 ms statement: SET client_encoding='''utf-8''';` 


Do you have log_lock_waits set to on?  If not, you might want to turn it on.

Cheers,

Jeff

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