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Re: Batch insert heavily affecting query performance. - Mailing list pgsql-performance

From Jean Baro
Subject Re: Batch insert heavily affecting query performance.
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Msg-id CA+fQeem6jR4UWcXicPr_5n1Y9SEV1ErHS-tYTAGZK9+Vcv+k=g@mail.gmail.com
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In response to Re: Batch insert heavily affecting query performance.  (Jeremy Finzel <finzelj@gmail.com>)
Responses Re: Batch insert heavily affecting query performance.
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Thanks Jeremy,

We will provide a more complete EXPLAIN as other people have suggested. 

I am glad we might end up with a much better performance (currently each query takes around 2 seconds!).

Cheers


Em 27 de dez de 2017 14:02, "Jeremy Finzel" <finzelj@gmail.com> escreveu:


The EXPLAIN

'Index Scan using idx_user_country on card  (cost=0.57..1854.66 rows=460 width=922)'
'  Index Cond: (((user_id)::text = '4684'::text) AND (user_country = 'BR'::bpchar))'

Show 3 runs of the full explain analyze plan on given condition so that we can also see cold vs warm cache performance.

There is definitely something wrong as there is no way a query like that should take 500ms.  Your instinct is correct there.

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